CORNELL UNIVERSITY .LIBRARY „.. Cprneri University Library PN 6338.S4D55 ^"^^S!}S!X,.9^ scientific iiiustrations a 3 1924 027 290 836 Cornell University Library The original of this book is in the Cornell University Library. There are no known copyright restrictions in the United States on the use of the text. http://www.archive.org/cletails/cu31924027290836 DICTIONARY OF SCIENTIFIC ILLUSTRATIONS AND SYMBOLS MORAL TRUTHS MIRRORED IN SCIENTIFIC FACTS Desiflnca for tbe THec of tbc Senate, tbc Bar, tbe ipulptt tbc ©rator, an& tbc TLovex of mature BY A BARRISTER OF THE HONORABLE SOCIETY OF THE INNER TEMPLE » NEW YORK ^^/'ILBUR B. KETCHAM 2 COOPER UNION Copyright, 1894, By Wilbur B. Ketcmam. PREFACE AND GUIDE. This book is an assemblage of striking and interesting sci- entific facts, arranged so as to be of immediate use to men who require a suggestive topic, a forcible analogy, a cogent symbol, or a suitable illustration. It may also be pleasant reading to busy lovers of Nature who are glad to spare half-hours from time to time in contemplating the marvels of Creation. Anecdotes have long been used to illustrate moral truth ; but scientific facts are often preferable. Clergymen are finding out that their hearers are somewhat tired of such of the former as are drawn chiefly from the sentimental side of fife, and do not rest upon reliable historical foundation. Scientific facts, being revelations of Nature herself, are not open to cavil. Nature is a parable ; and if we listen with rev- erent, loving ears, and look with sincere, eager eyes where she invites us, we receive eternal truths. Every pond and every star has its distinctive lesson ready for the man who will learn it. Professor H. Drummond, in his suggestive work, speaks of "natural law in the spiritual world." From my point of view these terms should be reversed. Spiritual law is the one and only law. The universe is merely the mirror thereof. As regards the mechanical arrangement of the present vol- ume, it is such as should render rapid reference to every part quite easy. All kindred topics are grouped throughout its pages together. Besides this, there is at page 401 an alphabetical in- dex of all the general topics; and on page 410 an index of natural objects, technical terms, places, things, and creatures. 3 4 PREFACE AND GUIDE. In the third place, there is also a list of the books from which various important facts have been culled, and an explanation of those abbreviations which are used throughout these pages to indicate the respective responsible authorities. It is to be distinctly understood that no author whom I have quoted is ever responsible for any illustration, symbol, analogy, deduction, inference, or comment which I have anywhere made. The references, which for convenience are placed at the end of the topics, leave all such responsibility with me, and only indicate the source whence the facts are derived. In every instance — except that of merely common knowledge ■ — I designate by the abbreviation the name of some authority to whom I am indebted for my information, and who may be regarded as eminently trustworthy. Wherever it has seemed necessary I have given his very words. I thought it better to do so than to curtail them ; because, while it is unnecessary that any application of a particular fact should be more than a few hints, it certainly is requisite, in an important instance, that the fact itself should be stated with precision by the most com- petent person, so that any speaker who uses it may be thereby made master of his subject. With a view to condensation I have, whenever possible, compressed the moral application of my facts into the denot- ing headings of the paragraphs. DICTIONARY OF SCIENTIFIC ILLUSTRATIONS AND SYMBOLS. Abjectness Caused by Dependency. — A condition of long dependence upon the help of others will always reduce men to a state more or less abject. The effect of such depen- dence is also very obvious in the case of some animals, and nota- bly in that of the sheep. With no one quality now to fit it for self-preservation, the sheep makes vain attempts at all. Without swiftness it endeavors to fly ; and without strength sometimes offers to oppose. But these feeble attempts rather incite than repress the assaults of every enemy ; and the dog follows the flock with greater delight upon seeing them fly, and attacks them with more fierceness upon their unsupported attempts at resistance. Indeed, they run together in flocks rather with the hopes of losing their single danger in the crowd, than of uniting to repress the attack by numbers. The sheep, therefore, were it exposed in its present state to struggle with its natural ene- mies of the forest, would soon be extirpated. Loaded with a heavy fleece, deprived of the defense of its horns, and rendered heavy, slow, and feeble, it can have no other safety than what it finds from man. Its long state of dependency has made it abject. A. Aborigines, Extermination of. — Englishmen are not the only creatures who are successful colonists. And the credit, if 5 6 DICTIONARY OF any, of exterminating aborigines they are entitled to share with insects. Let us take the case of the Australian bee. The Australian bee is about the size of a fly, and without any sting ; but the English bee has been so successfully introduced as to be now abundant in a wild state in the bush, spreading all over the Australian continent, and yielding large quantities of honey, which it deposits in the hollows of trees : the immense quantity of honey-yielding flowers, as Xanthorrhcea, Eucalyptus, Banksia, and a multitude of others, afford an abundant supply of mate- rial. The foreign bee is fast driving away the aboriginal insect as the European is exterminating the Black from the settled districts, so that the Australian bee is now very scarce. Does this illustrate the "survival of the fittest "? G. Absolute Rest and Motion. — Motion and rest are either relative or absolute. By the relative motion or rest of a body we mean its change or permanence of position with re- spect to surrounding bodies ; by its absolute motion or rest we mean the change or permanence of its position with respect to ideal fixed points in space. Thus a passenger in a railway- carriage may be in a state of relative rest with respect to the train in which he travels, but he is in a state of relative motion with respect to the objects (fields, houses, etc.) past which the train rushes. These houses, again, enjoy merely a state of rela- tive rest, for the earth itself which bears them is in a state of incessant relative motion with respect to the celestial bodies of cur solar system. In short, absolute motion and rest are un- known to us ; in Nature relative motion and rest are alone pre- sented to our observation. el. Accidents, Nature's Governance of The accident of the individual may be the design of Nature. We see this illustrated again and again in the lives of men and in the history of nations. In the forest we may clearly observe Nature's governance of accidents. Many noble oaks have been planted by the squir- rel, who unconsciously yields no inconsiderable boon to the domains he infests. Toward autumn this provident little ani- mal mounts the branches of oak-trees, strips off the acorns, and SCIENTIFIC iLLiJSTRATIOIstS. 7 buries them in the earth, as a supply of food against the sever- ities of winter. He is most probably not gifted with a mem- ory of sufficient retention to enable him to find every one he secretes, which are thus left in the ground, and springing up the following year, together with others which he accidentally drops, finally grow into magnificent trees. The nut-hatch in an indirect manner also frequently becomes a planter. Hav- ing twisted off their boughs a cluster of beech-nuts, this curious bird resorts to some favorite tree, whose bole is uneven, and endeavors, by a series of manoeuvers, to get it into one of the crevices of the bark. During the operation it oftentimes falls accidentally to the ground, and is caused to germinate by the moisture of winter. Many small beeches are found growing near the haunts of the nut-hatch, which have evidently been planted in this accidental manner. Thus, without design on their part, the squirrel and the nut-hatch are most influential planters of the two finest trees of the forest. When we gaze with awe and admiration upon the grandest oak and the most splendid beech in the landscape, we may reflect that those two trees may actually owe their existence to two trifling accidents — the one being that of a bird with a nut, and the other being that of a squirrel with an acorn — which happened more than a century ago! ro. Adaptation a Law of Nature — Nothing is more variable than the appearance of the stem in vegetables and trees. The form, size, and direction of the stem are beautifully adapted to the part which each plant has to take in the vast vegetable pop- ulation which covers and adorns the globe. Plants which re- quire to live in a pure and often renewed air ha-\'e a straight stem, either robust or slender, according to their individual habit. Where they require a moist and denser atmosphere, when they have to creep along the ground, or to glide among the bram- bles, the stems are usually long, flexible, and traihng. If they have to float in the air, supporting themselves by plants of more robust growth, or to hang suspended from forest-trees in graceful festoons and light garlands, they are provided with 8 DICTIOMAKY OF flexible, slender, and pliant stems, which enable them to em- brace with their tendrils the trunks of trees or shrubs. Thus Nature fashions the outward forms of plants according to the part which they are intended to fill, and according to the func- tions which have been allotted to them. v. Adapting One's self, The Incapability of Many inter- esting facts might be brought forward respecting the difficulty or facility which different animals have in accommodating them- selves to varieties of temperature. It would appear that some animals, particularly those which inhabit the colder latitudes, enjoy a very limited range. Among these may be mentioned the reindeer, the Esquimau dog, and the Arctic or great white bear. All the Esquimau dogs brought to this country have perished. Arctic bears when imported suffer very much from the change of temperature, and, in order to keep them ahve for any length of time, it is necessary to maintain a certain degree of artificial cold in the places where they are kept. Every at- tempt to introduce that beautiful and useful animal, the rein- deer, into England or Scotland, has invariably failed, though in the latter country the moss, which constitutes the principal part of its food, grows in great abundance. On the other hand, it is equally curious that most animals brought hither from trop- ical climates die of some form of scrofula. For there is a law of limitation for animals and men. And the facts respecting the limited range enjoyed by some animals are not more note- worthy than are those respecting the limited range of some men. There are some persons who do well enough in the dull dreary region of a cold official life, whose existence is unendurable in the midst of the associations of wit and romance. The red- tape species die if brought away from the frigid regions of offi- cialism and formahty ; and there are many poor men who live honest useful lives in the scenes of indigence, who, when for- tune unexpectedly transports them into the luxurious scenes of opulence and gaiety, die from some one or other of the results of the change for which they were not constituted. Many at- tempts have been made to remove very good men from one SCIE.VTIFIC ILLUSTRATIONS. 9 position into another, and the result has been a termination of their usefulness, and often of their hfe. The notion that men can adapt themselves to anything is an error arising from a want of observation. There is a sphere for every man ; and, as a rule, the removal of him when he is fairly acclimatized either renders him useless altogether, or makes it necessary that he shall be sustained by artificial inventions, and in that case he cannot lead that natural life which is necessary to the full de- velopment of his powers. It will also be found that these diffi- culties in adapting men to great changes of position increase with their age. s. Admiration, The Love of. — Man is an animal possessed of a powerful instinct to ornament himself, and to attract the at- tention of his fellows by various external decorations. This is a passion strong in every one of us : whether in the savage, who prides himself on his tattooing ; or the New Zealand chief, who disfigures his face with linear incisions ; or the Red Indian, who considers the ring in his nose as the symbol of nobility ; or the military, arrayed in all the glories of feathers and gold lace ; or the fine lady, in the fantastic creations of Parisian milli- nery. It is the love of admiration that gives the common im- pulse to all. This is the reason why the savage baiters his gold for beads and ostrich-feathers, and why the soldier sheds his blood like water for an iron cross or a silver medal. It is this which makes the courtier sigh for a ribbon, or a star, or a gar- ter ; and the citizen gaze with admiration and awe at the cocked hat of the sheriflF, and the gilded coach of the lord mayor, s. Adoration Premeditating the Destruction of its Object. — Every reader of newspapers is familiar with the recurring in- cident of an inquest held over a person who has been killed by another, on the avowed ground that he had for the deceased a passionate adoration. The alliance between the deep feeling of adoration, or even passionate love, and the determination of the will to accomplish the destruction of the object which has called forth the feeling, is one of those paradoxes which, though forced on us, we cannot solve, unless, indeed, we accept as an 10 DICTIONARY OF explanation that ready verdict of " insanity," which is an easy mode of shelving many metaphysical problems which are incon- veniently baffling. But the fact is, even that would not ac- count for the anomaly altogether in this case. Because there are people who systematically exhibit this anomaly as a settled principle of their procedure. We refer to the' Samoiedes (or Samoyedes). They are scattered to the number of about a thousand families along the coasts of the Frozen Sea in the government of Archangel, and in Siberia in the governments of Tobolsk, and Torusk. They are heathens, worshiping the sun and moon, the water and the trees; but above all they adore the bear, to whom they pray. Yet they hunt him to death. Howbeit, before they enter upon any expedition against him, so intense is their adoration of him, that they religiously spend time in offering prayers and sacrifices to him. d. Adventurers, Our Professional. — The sea-mews, terns, boobies, and cormorants live principally on fish which they catch for themselves. But the skuas {Stercoraria) incessantly pursue, harass, and beat these species until they have forced them to disgorge and drop their booty. Before the fi.sh falls into the sea it is caught by the active persecutors. But these robbers are held in veneration in the Shetland Islands, and the care and protection of the sheep are almost entirely intrusted to them, owing to their possessing an inveterate hatred against eagles, for as soon as an eagle appears in view, three or four of them combine together to give him battle. They never attack him in front, but harass him pitilessly until his strength is so reduced that they can completely conquer him, or at least force him to retreat. , Here we ha^'e what might have been intended as an allegory illustrative of " Our Professional Adventurers." The sea-mews, terns, boobies, and cormorants represent our bill-dis- counters, accountants, syndicate-mongers, and brokers. The skuas represent the lawyers who perpetually hunt, harass, and rob them of their earnings. These lawyers are not ostracized, but, on the contrary, are, like the skuas, encouraged ; because they are supposed to protect a lamblike public from the pillage SCIENTIFIC ILLUSTRATIONS. II of even greater rogues. Social skuas are deemed preferable to social eagles. re. Adversity, The Uniting Power of Many people who are very quarrelsome in prosperity become very good friends when hostile circumstances throw them together. Many statesmen who quarrel desperately when they are in power become firm friends when they are combined together on the Opposition bench. So venomous and non-venomous snakes, when con- fined together, appear to live in good-fellowship ; they are then generally seen mutually entwined in voluminous and intricate folds, and they have enjoyments in common, for they all drink water freely, and seem pleased when any is thrown over them. No doubt, restraint of liberty and metaphorical cold water are good things for pacifying all snake natures. g. Aggressive Qlory. — One of the most terrible of insects is that which is appropriately called the driver-ant of Western Africa [Ano?)tma arcens). They drive before them every liv- ing creature. There is not an animal that can withstand them. In their march they carry destruction before them, and every beast knows instinctively tliat it must not cross their track. They have been known to destroy even the agile monkey when their swarming host had once made a lodgment on its body. So completely is the dread of them in every living creature that on their approach whole villages are deserted. Fire will frighten almost any creature, but it has no terrors for the driver- ant, which will dash at a glowing coal, fix its jaws in the burn- ing mass, and straightway shrivel up in the heat.7^- Here is a noble model for aggressive mihtary nations. When ants can be so courageous in the work of destruction, surely men should renew their zeal in that direction. Besides the eclat which must attach to them if they equal the driver-ants, there are ribbons and crosses and decorations awaiting them, and the plaudits of Christendom. h. Aggressors, An Example for Human. — It sometimes hap- pens that the bees of an impoverished hive, impelled by hunger, make up their minds to attack and pillage a neighboring hive 12 DICTIONARY OF which is well stocked with provisions. Reaumur relates a strange fact which, he says, he has often observed, and which proves that the bees do not fight to satisfy a sanguinary and savage instinct, but (which is less reprehensible) to satisfy their hunger. Bees attacked by a superior force are in no danger of losing their lives if their enemies can induce them to give up their throats — that expression conveys the idea. Supposing three or four are previously attacking one bee : they are pull- ing it by its legs, and biting it on its thorax. The unfortunate object of this attack has then nothing better to do, to escape alive from such a perilous situation, than to stretch out its trunk laden with sweet-scented honey. The plunderers will come one after the other and drink the honey ; then, cloyed, satis- fied, having nothing more to demand, they go their way, leav- ing the bee to return to its dweUing-place. In the latter part of their proceedings they set a good example to human aggres- sors who, when they rob their fellow-men of their property and country, are not content with taking that only which they abso- lutely require. If all human aggressors emulated the bee, and never attacked or sought to obtain the goods of others except- ing when absolutely pressed by hunger, the villainy of the world would be very considerably diminished. i. Aggressors, Fortune is Fickle to. — The sea-eagles {Py- thargus) are bold enough to attack even the seal. As they can- not lift him, they cling to his back and force him ashore by means of their wings. But having buried its claws deeply in its prey, it is often buried by its own audacity, for the large seals are sometimes strong enough to dive and drag their foe under water, where, being unable to disengage its talons, it is compelled to stay and meet a miserable death, (i- Here, in the language of Horace, we have the pleasure of seeing " Fortune quitting the proud, and returning to the wretched." The seal is one of the most harmless and intelligent of animals, and the attack made upon it by the rapacious aggression of the sea-eat^le meets a fitting termination when that bold bird is dragged to its just doom under the sea. In many of our history tales, and SCIENTIFIC ILLUSTRATIONS. 13 in most of our novels, we see a working out of this principle of proper retribution overtaking the wrong-doer. The interest very properly centers in the arrival of Nemesis to interview the guilty ; and we all pray " May Fortune with returning smiles now bless Afflicted worth, and impious pride depress." RE. Analogues. — The outline of a tree in full summer foliage may be seen represented in the outline of any one of its leaves ; the uniform cellular tissue which composes the flat surface of the leaf being equivalent to the round irregular mass of the foUage. In fact, the green cells which clothe the veins of the leaf, and fill up all its interspaces, may be regarded as the analogues of the green leaves which clothe the branches of the tree ; and although the leaf be in one plane, there are many trees, such as the beech, whose foliage, when looked at from a certain point of view, is also seen to be in one plane. Tall P5rramidal trees have narrow leaves; as we see in the needles of the pine ; while wide-spreading trees, on the other hand, have broad leaves, as may be observed in those of the elm or syca- more. In every case the correspondence between the shape of the individual leaf and the whole mass of the fohage is re- markably exact, even in the minutest particulars, and cannot fail to strike with wonder every one who notices it for the first time. Not only in trees, but in shrubs, grasses, and all herba- ceous plants, we find the same typical correspondence between the leaf and the whole plant ; we find the plant pattern repeated in the leaf pattern. Every individual plant furnishes a special illustration of it, and in some instances the resemblance is very extraordinary, placing it beyond doubt that it is intentional, and not accidental, design, and not mere coincidence. b. Ancestry, Reliance on. — There are persons who seem to have nothing on which to base their claims to notice but the fact that they had noble ancestry, and they are never tired of informing you of that fact. There is every reason for likening them, as Sir T. Overbury did, to that useful esculent, the potato. 14 DICTIONARY OF They make a show, and flourish ; but the best part of them, according to their own boasting, is, like the potato, buried and underground. ne. Anger, The Uses of. — It might at first appear well for man- kind if the bee were without its sting ; but upon recollection it will be found that the little animal would then have too many rivals in sharing its labors. A hundred other lazy animals, fond of honey and hating labor, would intrude upon the sweets of the hive, and the treasure would be carried off for want of armed guardians to protect it. And it might at first appear well for mankind if the principle of anger was not a part of our constitution. But then we should be overrun with rogues. The presence of anger, always ready to start forth when an injury is done or ifitended, has the effect of suppressing much gross impudence and intolerable oppression. The sting of noble anger applied to a dastard who has bullied the weak or injured the unoffending has a most salutary influence in restraining him for the future, and in warning his fraternity of the like punish- ment which is all ready for them. But man should control his anger as the bee does her sting. It is not to be perpetually projected on every possible occasion, but to be used only when impertinence, laziness, injustice, or fraud requires. a. Anger Manages Everything Badly. — When the Hon is irritated, he flogs his sides with his tail, and shakes his mane. If, therefore, a traveler finds himself unexpectedly in the pres- ence of a lion, he may know the animal's intentions, and take precautions accordingly. If the tail does not move, the ani- mal may be passed without fear ; but under the reverse circum- stances no time must be lost in seeking a place of refuge, tinless you are in a position to commence a contest with firearms, and then the more prompt and determined your action the more successful will be the issue. The fact is, that the lion by his anger deprives himself of a good opportunity of stealing a march upon you. He loses ground, and gives you vantage by his manifestation of it. It was an old maxim with Statins, that "Anger manages everything badly." In the transactions of SCIENTIFIC ILLUSTRATIONS. 15 mankind undoubtedly he was right in this. It would seem from the conduct of the hon that the maxim may have some application even to animals. m. Animated Nature, The Common Bond of. — When after a lengthened voyage and far from home, says Humboldt, we for the first time set foot in a tropical land, we are pleased to recognize in the rocks and mountain masses the same mineral species we have left behind — clay, slate, basaltic amygdaloid, and the like, the universal distribution of which seems to assure us that the old crust of the earth has been formed indepen- dently of the external influences of existing climes. But this well-known crust is covered with the forms of a foreign flora. Yet here, surrounded by unwonted vegetable forms, impressed with a sense of the overwhelming amount of the tropical organ- izing force, in presence of an exotic nature in all things, the native of the northern hemisphere has revealed to him the won- derful power of adaptation inherent in the human mind. We feel ourselves, in fact, akin to all that is organized ; and though at first we may fancy that one of our native landscapes, with its appropriate features, like a native dialect, would present itself to us in more attractive colors, and rejoice us more than the foreign scene with its profusion of vegetable life, we neverthe- less soon begin to find that we are burghers even under the shade of the palms of the torrid zone. In virtue of the myste- rious connection of all organic forms (and occasionally the feel- ing of the necessity of this connection lies within us), these new exotic forms present themselves to our fancy as exalted and ennobled out of those which surrounded our childhood. Blind feeling, therefore, says the same great traveler, and the en- chantment of the phenomena perceived by sense, in the same measure as reason and the combining faculty, lead us to the recognition, which now penetrates every grade of humanity, that a common bond, according to determinate laws, and therefore eternal, embraces the whole of animated nature. k. Annihilated, Nothing is — Denudation is the inseparable accompaniment of the production of all new strata of mechan- 1 6 DICTIONARY OF ical origin. The formation of every new deposit by the trans- port of sediment and pebbles necessarily implies that there has been somewhere else a grinding down of rock into rounded fragments, sand, or mud, equal in quantity to the new strata. All deposition, therefore, except in the case of a shower of vol- canic ashes, is the sign of superficial waste going on contempo- raneously and to an equal amount elsewhere. The gain at one point is no more than sufficient to balance the loss at some other. Here a lake has grown shallower, there a ravine has been deepened. The bed of the sea has in one region been raised by the accumulation of new matter, in another its depth has been augmented by the abstraction of an equal quantity. Nothing whatever is annihilated. For "matter," says Roucher, " like an eternal river, still rolls on without diminution." Every- thing perishes : yet nothing is lost. e. Annoyance a Law of Life.— Every-day events manifest to very superficial observation that no created being, from the monster of the ocean to the insect that feebly creeps on the ground, exists free from the persecutions or annoyances of an- other. Some may be subject to fewer injuries than others, but none are wholly exempt : the strong assail by power, and be- come assaulted themselves by the minute or weak. The hor- net attacks the wasp. The wasp itself seizes the house-fly, and the fly in its turn is conducive after its manner to the death of many an animal. j. Annoyances, JWortal Effects of Multiplied. — Near Golu- bacs, on the Danube, there is a range of caverns famous for producing the minute poisonous fly too well known in Servia and Hungary under the name of the Golubacser fly. These singular and venomous insects, somewhat resembling mosquitos, generally make their appearance during the first great heat of the summer, in such numbers as to appear like vast volumes of smoke. Their attacks are always directed against every descrip- tion of quadruped, and so potent is the poison they communi- cate, that even an ox is unable to withstand its influence, for he always expires in less than two hours. This results, not so SCIEXTIFIC ILLUSTRATIONS. 17 much from the virulence of the poison, as that every vulnerable part is simultaneously covered by numbers of these most de- structive insects ; when the wretched animals, frenzied with pain, rush wild through the fields till death puts, a period to their sufferings, or they accelerate dissolution by plunging head- long in the rivers. irDuring life's pilgrimage a man has some- times to pass through scenes which are fraught with petty annoy- ances. They harass him like these flies. He may successfully defy several ; but when he is simultaneously attacked by them on all hands he often utterly collapses, or goes mad. Ro. Annoyances, Our Allotted. — The gadfly or breeze-fly of the sheep, CEstrus (Cephalemyia) ovis, has obtained notoriety on account of its attacking those animals. Even at the sight of this insect the sheep feels the greatest terror. As soon as one of them appears the flock becomes disturbed. The sheep that is attacked shakes its head when it feels the fly on its nostril, and at the same time strikes the ground violently with its fore feet ; it then commences to run here and there, holding its nose near the ground, smelling the grass, and looking about anxiously to see if it is still pursued. It is to avoid the attacks of the Cepha- lemyia that during the hot days of summer sheep lie down with their nostrils buried in dusty ruts, or stand up with their heads lowered between their fore legs, and their noses nearly in con- tact with the ground. When these poor beasts are in the open country, they are observed assembled with their nostrils against eiach other and very near the ground, so that those which occupy the outside are alone exposed.-^fr It seems singular that an ani- mal so thoroughly harmless as the sheep should be tormented in this manner. Yet so it is. There appears to be a law run- ning through creation ordaining to each creature certain allotted annoyances. Men are no more exempt from this law than sheep. Even the most harmless among them has to endure his gadfly. To one it comes in the form of unaccountable disease, to another in the form of systematic bad fortune, to another in the form of insolent children, to another in the shape of a Xan- tippe-like-wife ; but in some way or other every man has to i8 DICTIONARY OF endure his allotted annoyance. There is not a man who has not his gadfly. ^■ Antidote Supplied by Nature, A Needed— The Quin- quinas (genus Cinchona; isxii-iS.-^ Rubiacece) are medical plants, than which none are more precious. They grow along the eastern slope of the Andean Cordilleras in the republics of Venezuela, New Granada, Ecuador, Peru, and Bolivia. The bark is the most effective of all febrifuges, and is endowed with very valu- able tonic and depuratory properties. Sir Samuel Baker, in an address to the British Association at Dundee, pronounced it the traveler's best friend, the powerful weapon with which he could securely enter the African wilderness, and successfully contend against its demon-host of fevers and agues. And as if by a kind of compensation, the tropical forests, which contain so many poisonous fruits, produce such trees as these. d. Appearance at Variance with Character. — The Medusae are among the most beautiful creatures in Nature, and appear absolutely harmless. Wonderfully beautiful as are their form and color, the amount of sohd matter contained in their tissues is incredibly small. The greater part of their substance appears to consist of a fluid difiiering little, if at all, from the sea-water in which the animal swims ; and when this is drained away, so extreme is the tenuity of the membranes which contained it, that the dried residue of a "jellyfish," weighing two pounds, which was examined by Professor Owen, weighed only thirty grains ! Yet these creatures are capable of executing move- ments M'ith considerable vivacity ; their disk contracts and dilates alternately by the action of a band of what must be regarded as a muscular tissue ; their tentacles are capable of seizing upon and destroying, by a subtle venom, animals of far more com- plicated structure than themselves ; and their delicate stomachs have the power of speedily digesting the victim. Small fishes and Crustacea, and all the infinite multitude of minute marine creatures, are seized and paral)zed by their deadly arms ; and as the mouth and stomach are capable of almost indefinite dila- tion, the size of their prey often appears exceedingly dispropor- SCIENTIFIC ILLUSTRATIONS. 19 tionate. In fact, in spite of the extreme delicacy of their tissue, these beautiful Medusae are among the most voracious inhabi- tants of the ocean. They afford another instance of the fact that, whether among fishes or men and women, a beautiful and harmless appearance is not inconsistent with a greedy and poisonous character. n. h. Appearance with a Bad Character, A Fine. — When the peacock appears with its tail expanded, there is none of the feathered creation can vie with it for beauty, .yet the horrid scream of its voice serves to abate the pleasure we find from viewing it ; and still more its insatiable gluttony and spirit of depredation make it one of the most noxious domestics that man has taken under his protection.t Who has not known peacock-men in every department of life — those who, by their admirable demeanor, elegance, suavity, and graces, have irre- sistibly awakened admiration, yet on acquaintance were detected as the possessors of qualities which belied their appearance and rendered them odious ? Who has not known acquaintances whose appearance suggested everything that was chaste, refined, and graceful, but whose disposition was in every way unlovely • — who, like the peacock, were delightful as a spectacle, but in other respects detestable ? a. Appearances Fallacious Tests. — We require to be inces- santly discriminating between the reality and the thing that is like the reality. Even the insect and the leaf enforce this les- son. Look at those singular insects of which the herbivorous tribe Phasmina is composed, to which, from their close resem- blance to vegetable productions, the names of walking-sticks and walking-leaves are commonly given. Both are remarkable in their appearance. In the walking-leaves (Pliylliidce) the body is very flat and thin, and the wings form large, leaflike organs, covering nearly the whole abdomen, and furnished with irregu- larly reticulated nervures, which give them exactly the aspect of a leaf. This leafy structure pervades the whole animal ; the legs, especially the thighs, being always foliaceous. Some species are of a bright green color, while others are of the 20 DICTIONARY OF brown of dead leaves ; and the natives of the countries inhabited by these curious creatures generally inform Europeans that the insects are all green at first, but that as the leaves change color they change also. But even amid the changes still the " things are not what they seem." Take another example illustrating the same principle. It is well enough known that many crea- tures formerly supposed to be vegetable, such as the corals and the zoophytes, have since found their proper place in the ani- mal kingdom ; and one consequence of this reformation was, that several real plants were supposed to be animals, because they possessed some of the characteristics which had distin- guished those animals that had been placed in their proper position. Of these plants the coralline is a good example, for until a comparatively late period it was placed among the ani- mals in company with the true corals. There was reason for this error, for the coralline is a very curious plant indeed, gath- ering from the sea-water, and depositing in its own substance, so large an amount of carbonate of lime that when the purely vegetable part of the alga dies and is decomposed, the chalky portion remains, retaining the same shape as the entire plant, and very much resembling those zoophytes with which it has been confounded. While growing, the coralline is of a dark purple color, but when removed from the water the purple tint vanishes, and the white ^toiiy skeleton remains. It is, however, a true vegetable, as may be seen by dissolving away the chalky portions in acid ; there is then left a vegetable framework pre- cisely like that of other algffi belonging to the same subclass. N. H. & c. Appreciation Intensified by Occasional Deprivation. — As a rule men and women do not appreciate keenly those things which they always possess. Occasional absence makes the heart grow fonder. Take, for example, the zest with which we enjoy the return of vegetation in spring, because we have been deprived of it all the winter. The inhabitants of the southern hemisphere — South America, Australia, and the Cape of Good Hope — have no such zest in reference to their vege- SCIENTIFIC ILLUSTRATIONS. 2 1 tation, because its leaves are not periodically lost. Thus those people lose the enjoyment of, perhaps, one of the most glorious spectacles in the world — the first bursting into full foliage of the leafless tree. They may, however, say that we pay dearly for our delight by having the land covered with mere naked skeletons for so many months. This is too true ; but our senses acquire a keen relish for the exquisite green of the spring, whieh the eyes of those living within the tropics, sated during the long year with the gorgeous productions of those glowing climates, can never experience. ro. Assimilation. — There is in man a principle of assimilation. From books, companions, and circumstances he extracts just those principles which will build up his character. Out of het- erogeneous materials his nature converts to its own use what- ever is appropriate. So it is with his body. However various ■ the articles of food and drink may be, it is clear that there is a process by which all differences are annulled and a uniform re- sult attained. Whatever characters these substances may have outside the organism are altered shortly after their entrance into it ; specific differences vanish, and all varieties are merged in a vital unity. ph. Associated Labor, Triumph of. — A single bee, with all its industry, energy, and the innumerable journeys it has to per- form, will not collect more than a teaspoonful of honey in a single season, and yet the total weight of honey taken from a single hive is often from sixty to one hundred pounds.-f A very profitable lesson to mankind of what great results may arise from persevering and associated labor ! i. o. Astonishment. — Certain folks are perpetually being aston- ished. The stanch old Churchman is astonished at any inno- vation in the form of worship ; he cannot recognize his religion unless it has always the same surroundings. The old Tory is always astonished at the inevitable changes in the details of the Constitution ; for unless he has all the same externals he can- not believe his position to be safe. Among domestic animals the cow is the worthy representation of this feeling of astonish- 2 2 DICTIONARY OF merit. On any alteration of its accustomed haunts, such as the change in the appearance of a building, it is as astonished as a narrow theologian is at a new theological term. The astonish- ment of the cow at a new door has made the proverb, " Like a cow at a new door." Dogs are astonished at any change in the outward appearance of those they are familiar with, and at any strange object : encompassing it repeatedly, and smeUing at it to discover its nature. They cannot recognize their mas- ter in the water, but swim round him, astonished at hearing his voice, without identifying him. P- Athletic Qlory. — The young athletic negroes in their ivory hunts well know the prowess of the gorilla. He does not, like the lion, sullenly retreat on seeing them, but swings himself rapidly down to the lower branches, courting the conilict, and clutches at the foremost of his enemies. The hideous aspect of his visage, his green eyes flashing with rage, is heightened by the thick and prominent brows being drawn spasmodically up and down, with the hair erect, causing a horrible and fiend- ish scowl. Weapons are torn from their possessor's grasp, gun- barrels bent and crushed in by the powerful hands and viselike teeth of the enraged athlete. Two negroes will be walking through one of the woodland paths, unsuspicious of evil, when in an instant one misses his companion, or turns to see him drawn up in the air with a convulsed, choking cry, and in a few minutes dropped to the ground a strangled corpse. The terrified survivor gazes up, and meets the grin and glare of the fiendish giant, who, watching his opportunity, had suddenly put down his immense hind hand, caught the wretch by the neck with resistless power, and dropped him only when he ceased to struggle. We make a great boast at the present time about our athletics. Mr. AVilkie Collins, in his masterly preface to " Man and Wife," expatiates upon the disastrous effect which has been produced upon society by " the recent unbridled de- velopment of physical cultivation in England," and clearly proves the intimate connection which exists between that and the " recent spread of grossness and brutality among certain SCIENTIFIC IILVSTRATIOXS. 23 classes of the English population." Yet there are thousands of gentlemen who almost venerate one of their number who may- happen to be an athlete. They appear to consider that the quali- ties which make up the character are really noble. Let them study the gorilla, the ape which most resembles man, and then reflect that when they have done their utmost to train for the championship of the world, that awful brute is their superior, ro. Atom, The World Mirrored in an. — There are myriads of atoms existing in a single drop of water, recreating and exe- cuting all their functions and evolutions with as much rapidity and apparent facility as if the range afforded to them was as boundless as the ocean. He who has attentively watched the motions of these living atoms in a single drop of water, as dis- played by the oxyhydrogen microscope, must feel impressed with the conviction that their motions are voluntary, and that their lives, like that of man, exhibit a mingled scene of pain and of enjoyment. Their extreme minuteness, as judged of by our feeble senses, does not prevent them from having a mul- tiphcity of organs for their use, probably as perfect as in much larger animals. s. Attraction Reciprocal. — Reciprocal attraction is a principle running throughout the world. Its result among men is friend- ship. Its consequence in matter is adhesion. If two leaden bullets are cut with a penknife so as to form two equal and brightly polished surfaces, and the two faces are pressed and turned against each other until they are in the closest contact, they adhere so strongly as to require a force of more than one hundred grams to separate them. The same experiment may be made with two equal pieces of glass, which are polished and made perfectly plane. When they are pressed one against the other, the adhesion is so powerful that they cannot be separated without breaking. As the experiment succeeds in vacuo it can- not be due to atmospheric pressure, but must be attributed to a reciprocal attraction between the two surfaces. The attraction also increases as the contact is prolonged, and is greater in pro- portion as the contact is close. So with true friendship, el. 24 DICTIONARY OF Attractive may be Perilous, The. — Of the poisonous plants of South America, an interesting one is the manchineel '{Hippomane Majicinella). This tree thrives best, it is said, on the sea-shore. It bears a profusion of very pretty fruit, resem- bHng in form and color the red apple (the Spanish Manzanillo) and exhaling an agreeable lemonlike odor. They are, there- fore, scarcely less beguiling than Dead Sea fruits ; but they are also very poisonous, yet less deadly than the milky juice which flows from the slightest incision made in the tree's thick and grayish bark. This juice, received into the stomach, or intro- duced into the blood through a wound, slays the victim with awful quickness. If it do but touch the skin, it excites a vio- lent irritation, and raises swellings or boils of the worst descrip- tion. The very vapor which it emits causes a painful itching in the eyes, the lips, and the nostrils. It was formerly asserted that to sleep under the shade of a manchineel-tree was certain death, but the naturalist Jacquin, in the interests of science, courageously made the experiment and proved the falsity of the story. d. Audacity and Ingratitude as Natural Characteristics. — The cuckoo is a perfect type of a creature endowed by Nature with audacity and ingratitude as its prominent characteristics. Instead of building a nest for itself, the cuckoo always auda- ciously deposits her eggs in the nests of some of the smaller in- sectivorous birds, generally placing only one egg in each nest. The egg of the cuckoo is comparatively of small size, so that the small birds into whose nest the intruder is thus foisted are not alarmed at its presence, but hatch it together with their own offspring, and when hatched pay as much attention to the young parasite as if his presence in the nest was perfectly legitimate. The young cuckoo, however, repays all this care with a behavior which is gross ingratitude ; for as soon as he has acquired suffi- cient strength, he proceeds in the most businesslike manner to get rid of his foster-brothers, in order to appropriate to the gratification of his own inordinate appetite the whole of the sup- plies brought by the parent birds. For this purpose he gently SCIENTIFIC ILLUSTRATIONS. 25 insinuates himself under the body of one of the young birds, and, by the assistance of his wings, contrives to hoist the unfor- tunate httle animal upon his back, which is furnished with a peculiar depression to enable the latter to rest comfortably in that dangerous position. Having succeeded thus far, the young cuckoo proceeds backward to the edge of the nest, and then, with a sudden jerk, throws off his burden. In this manner, in the course of a few days, the usurper remains in undisturbed possession of the nest, and secures to himself the entire atten- tion of the birds which he has thus deprived of their legitimate offspring. This care is continued long after the young cuckoo has left the nest. We see, therefore, that both the audacity and the ingratitude which are the characteristics of this bird are crowned with success. When we reflect upon this singular fact, we cannot fail to be struck by the coincidence that these same qualities are just those which have been such powerful factors in the success of many men. Nor is it less remarkable that there are certain families which Nature has endowed with audacity and ingratitude as their most striking peculiarities. The biography of such persons reveals quite plainly that it was owing entirely to these cuckoolike endowments that suc- cess attended them throughout their career. The cuckoo in- stinct guided them. n. h. Audacity a Means of Success. — What may have been the cause of attributing a high degree of ferocity to the tiger, is its incredible audacity. In this it differs from the lion, for when hungry no obstacle, not even the most certain danger, will ar- rest it. Nor does it delay nor employ artifice to entrap its prey, nor will it abandon it if too powerful ; neither does it wait to be reduced by hunger to the last extremity before it braves every obstacle. No ; it throws itself without hesitation on the first object that presents, whether man or animal, and will face death a thousand times in order to carry it off. Thi^ temerity is frequently crowned with success. Not only is it so in the case of tigers, but it is so also in regard to men. The French people consider that the success of the men who imposed the 26 DICTIONARY OF first French republic upon the reluctant nation was due to their acting up to "the maxim of one of their grand proto- types of 1793, de I'audace, encore Vaiidace, toujours de Paiidace." Whether this estimate be correct or not, certain it is that many of the vast things of history owe their accomplishment to the exhibition of that same quahty which distinguishes the tiger — " audacity, always audacity.'' m. Authors, Posthumous Mischief of Immoral. — It is a remarkable fact, and is proved by Dr. Bell (in his " History of British Insects "), that the poison of the rattlesnake is even se- creted after death. Dr. Bell, in his dissections of the rattle- snakes which have been dead many hours, has found that the poison continued to be secreted so fast as to require to be dried up occasionally with sponge or rag4l- The immoral author, like these rattlesnakes, not only poisons during his lifetime, but after death : because his books possess the subtle power of secreting the \-enom to a horrible degree. A moral sponge is constantly called into requisition to obliterate his poison for many years after he himself has been dead. re. Autocrats, The Jealousy of. — Autocrats, whether elected or usurping, are all more or less jealous. The female autocrat is in some respects worse than the male. Two queen bees will not live together in the same hive. And indeed, as soon as a young queen bee is about to lay her eggs, she is anxious to destroy all the royal pupas which still exist in the hive. When she has become a mother, she attacks one after the other the cells which still contain females. She may be seen to throw herself with fury upon the first cell she comes to. She tears an opening in it large enough for her to introduce her sting. When she has stung the. female which it contains, she with- draws to attack another. 1 Man is not much behind these jeal- ous insects. Among certain tribes of Ethiopians the first care of the nf wly crowned chief is to put in prison all his brothers, so as to prevent wars by pretenders to the throne. And even among more civilized nations the records are numerous of the mean and petty tricks and cruelties adopted by kings and SCIENTIFIC ILLUSTRATIONS. 27 queens for disposing of any possible rivals. In favor of Her Most Gracious Majesty the Queen Bee it must be said that when she has fairly got rid of all dread of rivalry, she does set to her own legitimate work for the benefit of the bee commu- nity with indefatigable zeal. It is to be regretted that equal commendation cannot be given to the human autocrat, whose laziness and roguery usually increase when security is assured. I. Avarice, A Retribution on. — In the island of Ternate, belonging to the Dutch, a place that had been long celebrated for its beauty and healthfulness, the clove-trees grew in such plenty that they in some measure lessened their own value : for this reason the Dutch resolved to cut down the forests, and thus to raise the price of the commodity,, but they had soon reason to repent of their avarice ; for such a change ensued by cutting down the trees that the whole island, from its being healthy and delightful, having lost its charming shades, became exti-emely sickly, and has actually continued so to this day. a. Avidity, The Utilization of. — The cormorant [Fhalacro- corax carbd) has an insatiable appetite. The havoc it commits in rivers where it successfully dives for fish is very great. The Chinese and Japanese utilize its habits for their own purpose. They turn them loose into waters abounding with fish, and place a ring round their neck which prevents them from swal- lowing the prey when it is caught. The bird is trained to know its master's voice, and at his call brings him all the fish it cap- tures. ^It is wonderfully dexterous and successful in securing the fish, and thousands of small rafts and boats are used en- tirely for this species of fishery. This is one of the many ways in which men show that they can profit by the avidity of others. A natural thief is so greedy that he is often employed by offi- cial authority to catch others ; and hence we have the proverb, " Set a thief to catch a thief." Lawyers are so rapacious for money that they can be employed to hunt to the ends of the earth a man who owes any to their client ; so that Lord Brougham once defined a lawyer as " a man who wins back 28 DICTIONARY OF your estate for you, and keeps it himself." The legal cor- morant is, however, in these clays under better control, and, hke the ringed bird, now illustrates how avidity may be safely utilized. RE. Beautiful, The Production of the. — Beauty, of course, is a mere mental conception. But if we once possess the idea and love it, we shall find that we enjoy a great capacity for the production of that which corresponds to our idea of what is beautiful. This does not only apply to the moral world, but also to the material. There we can produce the beautiful even out of very unpromising materials. Who could have antici- pated that matters so dull and common as sand and the ash of a wood fire should, under certain circumstances, unite to form bright transparent glass ? What feat can be conceived more wonderful than, from a substance so dingy, dirty, and unprom- ising as coal-tar, to create the beautiful series of aniline colors which we admire as mauve, magenta, solferino, and bleu de Paris ? To such perfection, indeed, has chemistry now carried this branch of manufacture, that there is hardly any tint which may not be obtained from coal-tar by skilful treatment, be. Beauty, Subtleness and Fragility of Forms and exis- tence of beauty, how evanescent they are ! How subtle, how fragile, yet what a fascination they possess ! Behold them on a humble scale in the life of the Cydippe pileiis, which is fragile as its form. It plays about rapidly, for a time, in its little world of water, then dies, and disappears as if it had melted into noth- ing. Yet when alive, even if it be cut in pieces or broken up by the force of the waves, as is often the case, its ciliated bands still continue to perform their work, and the iridiscent light plays over the fragments as beautifully as when the existence was entire. But, beyond compare with these forms of beauty, see yonder glowing sunset, and its wondrous tints and lights in their vast supernal splendors ! Oh, \-ision of beauty ! Alas ! as we gaze the tints are fading, and the lights gi'ow dim ; the celestial panorama is dissoh'ing ; the night winds blow across the dismal sea, and a few darkening clouds and faint streaks SCIENTIFIC ILLUSTRATIONS. 29 of amber light alone remain to tell of the evanescence of beauty. d. Beauty, Unostentatious. — The name of Aphrodite, the Greek goddess of beauty, was first given to the sea-mouse on account of its marvelous loveliness. The beauty of its hairs is almost inconceivable. They are as magnificently colored as the plumes that decorate the throat of the humming-bird, and, unlike those feathers, change their color with every move- ment. Every color of the rainbow is reflected from these hairs ; and as each individual hair reflects a different color, it may be imagined that the appearance of the animal is indeed beautiful. Why the creature should be endowed with such a gorgeous dress is not easy to see, because it hves where the light seldom penetrates, and where its splendid clothing is all hidden. The chosen habitation of the aphrodite is in the muddy bed of the sea, and as if not satisfied with humbly hiding its beauties in the black and fetid mud, it creeps beneath stones or shells, so as to be completely hidden from the light. It is an illustration of a too retiring unostentatious beauty, and is the reverse of the picture of flaunting elegance exhibited by both the peacock and the vain belle of fashionable society. f. Being, How to Test the Worth of any. — If we put our- selves entirely on one side, and try to look at animal life as a thing in which we had no part, we should, of course, in attempting to fix the rank of any being, be guided almost exclusively by the range and complexity of the duties the creature was enabled to fulfil. We should use function almost by itself as a test of worth, and should look upon structure as simply the means to an end. Dignity of function, springing as it does out of intricate and finished machinery, must, when we look at animals apart from ourselves, form the standard by which rank in life can be judged. On the one hand, we may ponder over the dreary simphcity of a fish's life, the monotony of its daily swim, the low character and even small amount of nervous energy re- quired to move its uniform masses of muscle, and the feeble working of its diminutive brain — limited, apparently, to the 30 DICriONARY OF Stirring up, through rough and gross sensual perceptions, of a turbid consciousness, which the accumulation of even years of experience can hardly mold into anything hke intelUgence. Even in performing that duty which usually calls forth the high- est cerebral activity, viz., the care of the young, the greatest effort of the fish is perhaps to construct a nest of the rudest kind. But turning from these cold and flabby creatures to the gifted bee, and meditating upon its bright and varied life — on those wonderful exhibitions of its power and skill which never fail to excite the admiration of mankind, and on its finely wrought and compact organization put to use in the facile ac- complishment of difficult and delicate tasks — we think it natural to rank so full a life above that of the plainer vertebrate. The bee's life is as short as it is bright : it has httle time to learn ; little opportunity of accumulating experience either for itself or for its offspring. If it were long-lived, and the race to con- tinue long-lived through many generations, there would prob- ably cease to be any dispute about the reason and instinct of bees. If we are to consider mankind as standing at the head of creation, we can only do so by virtue of our many powers and resources, and by reason of our mastery over the circum- stances of life. If we are to single out of the human race par- ticular individuals for especial rank, it should be those who are qualified for high service by reason of the range and character of their virtues and faculties. q. Benignant Soul, The. — The benignant soul possesses a vital energy and an ubiquity which resemble the moss. It matters not to the healthy action of the mosses' functions whether the surrounding air be stagnant or in motion, for we find them on the mountain top amid howling winds and dri- ving storms, and in the calm, silent, secluded wood, where hardly a breeze penetrates to ruffle their leaves. The range of flower- ing plants is circumscribed by conditions of light, temperature, elevation above the sea, geological character of the district, and various other physical causes ; but the wonderful \-ital energy with which the mosses are endowed enables them to resist the SCIENTIFIC ILLUSTRATIONS. 31 most unfavorable influences, to grow freely and luxuriantly even in the bleakest circumstances, and to acclimatize themselves, without changing their character, in any region of the earth, and every kind of situation upon its surface. They symbolize the benignant soul. It is found in connection with every form of religion, and where there is no form of rehgion at all. In the fierceness of a world's persecution it maintains its place, yet graces the humble secluded paths of private life. It is found in men of all colors and climes ; and, in various forms, dwells wherever there is suffering which needs solacing, or calamities which demand heroism. fo. Biter Bitten, TFie. — The common pinna (Pinna pectinatd) are plentiful on the southern coasts of England, particularly in Cornwall. One or two inches of the pointed end of the shell are inserted in the soil. In its ordinary position this opening in the shell is about two inches wide, exposing the contained aninial, which occupies but a small portion of the cavity, and seems to offer itself as a prey to the first creature that may choose to devour it. Some fish is thus tempted to enter, but the first touch within is a signal for destruction. The shell closes not only at the side but top, the latter action being effected by the separation of the pointed ends, and the captive is either crushed to death, or soon perishes from confinement. Here is a lesson to men who are audaciously aggressive in their cupidity. The pinna which you covet may encompass you ! c. s. Blessings in Unexpected Places. — Poor as may be the fauna of the desert, there is yet cause enough for astonishment that the species which compose it, especially the herbivora, should be able to find subsistence in these seas of sands, where they can find but a few saline plants scattered at rare intervals, and where fresh water is almost wholly wanting. It is, how- ever, well known nowadays that the wilderness provides its denizens with an aliment, which is sometimes very abundant, suitable for man, the camel, and the beasts, and is considered identical by many authorities with the manna of the Bible This 32 DICTIONARY OF substance is a cryptogamous vegetable, variously christened Lichen escukntus (Acharius), Lecanora esculenta (Pallas), luttarut (by the Arabs), and vassela-el-ard (by the Algerines). It some- times forms on the sand, in the morning, a layer one or two inches in thickness, and appears to have dropped from heaven, or to have sprung spontaneously from the soil during the night. It is probable that its spores, transported by the wind, are developed by the humidity which is condensed through the nocturnal coldness. A growth like this teaches us not to be depressed on occasions when we may happen to be in the wil- derness tracts of our life. For we often find blessings in unex- pected places. Do not be afraid of the wilderness when you remember the manna, and observe in this wonderful provision of Nature how much of aptness there is in Isaiah's allusion to the wilderness as a fruitful field. d. Blessings are Relative. — In the recesses of the great cave of Kentucky, miles underground, there are waters which no ray of sunlight ever reaches, and which are inhabited by blind insects and blind fishes. Dr. Wyman examined fourteen of these fishes [Amblyopsis spelceus), and in three or four of them only was he able to detect an eyeball beneath the skin. These he dissected, and found that the eye was wholly covered by areolar tissue, and was not organized to receive images of ex- ternal objects. Now, it is universally affirmed that light is one of the greatest blessings in the world ; and it might be supposed that if it could be made to penetrate into any such recess as this cave it would be a vast benefit. Yet what waste of energy it would be to break through the rocks and open the rayless ■"."aters to the sunlight! For here you have creatures which do not need light ; " eyes which see not," and lives which are in- dependent of the sun. That which would be an unspeakable blessing to others would be no blessing here. To labor to light up this place would be as unnecessarily disappointing as are the labors of those educationists who carry the blessings of music to unharmonious souls ; of reasoning to addle-pated dolts ; of poetry to blockheads ; of Christliness to hypocritical formal- SCIENTIFIC ILLUSTRATIONS. ZZ ists. Blessings are relative things. It is absurd to judge that the same thing will benefit all. It is waste time to attempt to carry the light of knowledge to creatures whose natures are dis- qualified for its reception. The spiritual eyes of some men are not organized to receive impressions. All, therefore, that we have a right to expect from such individuals is that they will harmlessly fulfil their destiny in the darkness which is natural to them. MU. Blessings Neutralized. — The world is full of instances of blessings which are neutralized by surrounding circumstances. Springs of fresh water are often found rising up in the sea. Nevertheless the sailor dies of thirst, because the properties of the fresh water are merged in and rendered inert by the sea ; so he wails with the Ancient Mariner, " Water, water everywhere, But never a drop to drink.'' In social life we may see people blessed with ample riches, but the benefit of them is rendered inactive by reason of disease or meanness. In the domestic world we may often see all the pure springs of home enjoyment completely neutralized by the bitter waters of discontent, peevishness, vanity, and female self- ishness. MA. Blessings, Tlie Diffusion of. — The globe of the earth is surrounded with a mass of atmosphere extending forty or fifty miles above the surfaice. Each particle of air is a luminous center, receiving its light from the sun, and it radiates light in every direction. Were it not for this, the sun's light could only penetrate those spaces which are directly accessible to his rays. Thus, the sun shining upon the window of an apartment would illuminate just so much of that apartment as would be exposed to his direct rays, the remainder being in darkness. But we find, on the contrary, that although that part of the room upon which the sun directly shines is more brilliantly illuminated than the surrounding parts, these latter are nevertheless strongly illu- minated. In the social world, too, there are luminous centers. 34 DICTIONARY OF These are noble souls, who, being especially blessed themselves, diffuse in every direction some of the blessings which they have received. Were it not for them, and their power of spreading brightness, goodness, and joy, the world would be indeed ray- less and cold. ha. Blusterer's Demeanor and Collapse, The. — The blusterer reminds us of the dor-beetle {Scarabaiis stercorarius), for he is noisy and affects fearlessness, yet is a great coward. The dor- beede, with a violent and noisy flight, proceeds on its way, or circles around with an apparent fearlessness of harm ; yet the instant it is touched, or interrupted in its progress, though in no way injured, it will immediately fall to the ground, generally prostrate on its back, its limbs extended, stiff, and seemingly devoid of life, and suffering itself to be handled without mani- festing any signs of animatioi;i. In time, finding no harm ensues, it resumes its former state. j. Braggadocio, The Destiny of the. — The ruffed grouse {Bonasa umbellus) found in the United States of America measures about eighteen inches in length, and furnishes an ex- ceedingly delicate food. The most remarkable of the American species is the pinnated grouse (Teiraro cupido), which is found, though rarely, in many parts of the United States. A remark- able habit of these birds is thus described by Mr. Mitchell in Wilson's " American Ornithology " : " During the period of mat- ing, and while the females are occupied in incubation, the males have a practice of assembling principally by themselves. To some select and central spot, where there is very little under- wood, they repair from the adjoining district. From the exer- cises performed there, this is called a scratching-place. The time of meeting is the break of day. As soon as the light ap- pears, the company assembles from every side, sometimes to the number of forty or fifty, ^^^hen the dawn is past, the cere- mony begins with a low tooting from one of the cocks ; this is answered by another. They then come forth one by one from the bushes and strut about with all the pride and ostentation they can display. Their necks are incurvated ; the feathers on SCIENTIFIC ILLUSTRATIOKS. 35 them are erected into a sort of ruff ; the plumes of their tails are expanded like fans ; they strut about in a style resembling, as nearly as small may be illustrated by great, the. pomp of the turkey-cock. They seem to vie with each other in stateliness ; and, as they pass each other, frequently cast looks of insult, and utter notes of defiance. These are the signals for battles. They engage with wonderful spirit and fierceness, leaping a foot or two from the ground, and uttering a cackling, scream- ing, and discordant cry.'' Occasionally, however, these exhibi- tions of pride receive rather an unpleasant interruption ; for the hunters often find out the scratching-places, and by concealing themselves overnight, with their guns, in huts of pine branches, within a few yards of the spot, deal wholesale destruction upon the unfortunate bircjs, while these are engaged in strutting about or fighting. -"It is the destiny of the braggadocio to be caught in his work. Whether the braggadocio be feathered or human, the end must be the same. Noise, swagger, vainglory- ing, and fighting must attract the attention of strong enemies. Those enemies, of course, bide their time ; and when proud braggarts are utterly engrossed in their fightings, they make them an easy prey. Emperors and grouse are equally fated when they assume the character of the braggadocio. nd. Bright Tints in Unexpected Places The bright and the beautiful often arrest our attention where we should not have expected to have discovered them. Take colors, for example. All transparent bodies, solids, liquids, or gases, when in suffi- ciently fine laminae, appear colored in very bright tints, espe- cially by reflection. Crystals which cleave easily, and can be obtained in very thin plates, such as mica and selenite, show this phenomenon, which is also well seen in mother-of-pearl and in soap-bubbles. A drop of oil, unattractive enough in its own appearance, when spread rapidly over a- large sheet of water, exhibits all the colors of the spectra in a constant order. Even a soap-bubble, when it is blown out, is brilliant and iri- descent. Brightness in Combination with Impurity The illu- 36 DICTIONARY OF minating power of phosphorus appears due to an extremely- slow chemical reaction, and it is affirmed that vegetable and animal substances may grow phosphorescent at a certain stage of decomposition, or even without any appearance of putrefac- tion. Accredited authorities cite a host of examples of fresh or stale meats which have been seen to shine during the night with a more or less vivid clearness. Fish, and especially salt- water fish, when no longer fresh, acquire a phosphorescence which brightens during the first period of putrefaction. Leave for two or three days dead salt-water fish in non-luminous sea- water : at the end of that time the water will be covered with a thin pellicle of fatty matter, and will soon become phospho- rescent. But it is not only in material nature that we thus find brightness in combination with impurit)'. Genius itself has been found shining amid moral putrefaction. When so found its light is ephemeral and phosphorescent, but when allied to moral goodness its blaze is like the sun. my. Brilliant, but Nasty. — The luminous shark {Squalus ftil- gens) emits, from its head and body, a vivid greenish phospho- rescent gleam. Yet this imparts to the fish a truly ghastly and terrific appearance. You are fascinated by the brilliancy, but repulsed by the creature which it reveals. The same feeling is excited in our minds by certain men and women of genius whose wit and fancy sparkle over moral hideousness in three- volume novels. Their intellectual light may be attractive ; but the appearance of their moral nature, under their own irradia- tion, is horrible. G. Bully, The Characteristics of a. — There is no animal, how contemptible soever, that will venture boldly to face the turkey-cock, that he will not fly from. With great insolence, however, on the other hand, he pursues everything that seems to fear him, ]iarticularly lap-dogs and children, against both which he seems to have a peculiar a\'ersion. On such occa- sions, after he has made them scamper, he returns to his female train, displays his plumage around, struts about the yard, and gobbles out a note of self-approbation. In fact, he exemplifies SCIENTIFIC ILLUSTRATIONS. 37 all the characteristics of a bully. Like the human bully, he is officious, insolent, and loves self-display. His victories are trumpery, yet he is full of self-applause. He is an arrant cow- ard, and therefore struts and swaggers, and delights in brag. A. Bumbledom, The Philosophy of. — The Cristatella nmcedo is one of the most singular beings that America, or indeed any country, produces. It appears much as if it had been made of soft, woolly silk, and at first sight bears a resemblance to a long- haired caterpillar that had been flattened by accident. The strange point in this creature is that it is locomotive, and can crawl along with a steady and slow motion. How it manages to crawl is really a wonder. If it were a single animal, there would be no mystery about it ; but it must be remembered that it is an aggregation of separate animals, each distinct in itself, though preserving a connection with all the others. To all ap- pearance these animals have no particular organs of sensa- tion, and their tentacles are merely outspread as nets to en- tangle any particles of food that may happen to float against them. It seems almost incredible that beings thus constituted should have any power of concerted action. Yet that such is the case is evident from the fact that the aggregated mass is able to crawl about, for unless the multitudinous animals agreed to move consentaneously, the entire mass would remain still. To prove that there is really a concerted action, and that the movement is not involuntary, it will be seen that the Cristatella does clearly choose the direction in which it goes, inasmuch as it shuns the dark and shady places, and loves to crawl in shal- low water, where it can enjoy the light and heat of the sun- beams. This oddity is typical of Bumbledom. Bumbledom is one of the queerest forms of nineteenth-century social life. Considering the elements of stupidity, vulgarity, obstinacy, and jobbery of which it is agglomerated, it is wonderful that it makes any progress at all. Yet it does so ; and it is remarkable that before it can take one single step even to secure benefits for itself, all the separate heads of stupidity, vulgarity, obstinacy, 38 DICTIONARY OF and jobbery have to concur in the movement. Of course its pace is dismally slow; and since it resembles the Cristatella mucedo in so much, it would be satisfactory if we could add that, hke its prototype, it is directed away from " shady places, and always toward the light." f. Business Aptitude. — It is a noteworthy fact that an ant will always avail itself of any accidental circumstance that may assist it in building. One of these industrious little beings has been observed to take advantage of some straws that happened to cross one another, and to convert them into beams where- with the ceiling of its home could be supported, depositing little clay pellets in the angles formed by the straws, and then laying several rows of the pellets along the sides of the straws. On account of these extemporized beams, the ceiling was neces- sarily of much greater strength than those which were con- structed in the usual manner. This insect possesses an apti- tude for the business in hand. It understands how to turn everything to account in connection with the task in which it may be engaged. In this respect there is a great contrast be- tween it and the jackdaw, who, when he flies toward his nest with a branch which he has selected as suitable for use in its construction, carries it crosswise, and so cannot enter any small aperture leading to his nest, and therefore has to abandon his load. This sort of business aptitude which the ant possesses is just that quality which, in a man, helps to make a fortune. Some men in a preeminent degree possess the antlike tact, which turns anything to account on the instant. h. Calmness under Attack. — When attacked, either by force or by argument, we often lose our vantage-ground by our want of calmness. We may take a useful hint from the deportment of the gray heron. When this bird is closely pursued by its enemies, which generally are the eagle and the falcon, it makes an admirable but quiet defense. Its usual tactics are to wait for its enemy, using its bill like a lance in rest, and to allow the attacker to pierce himself through merely by his own impetuos- SCIENTIFIC ILLUSTRATIONS. 39 ity. Sometimes the adversary gets completely impaled. " Be steady under attack," was the wise advice of Mr. Justice Willes to a young barrister. And the heron inculcates the same sug- gestion to everybody. re. Cantankerous Character, The The life of the cantan- kerous man is like the life of the hamster rat in nearly all promi- nent particulars. The life of the hamster rat is, like his, divided between eating and fighting. It seems to have no other passion than that of rage, which induces it to attack every animal that comes in its way, without in the least attending to the superior strength of its enemy. Ignorant of the art of saving itself by flight, rather than yield it will allow itself to be beaten to pieces by a stick. If it seize a man's hand, it must be killed before it will quit its hold. The magnitude of the horse terrifies it as little as the address of the dog, which last is fond of hunting it. This ferocious disposition prevents the hamster from being at peace with any animal whatever. It even makes war with its own species. Whether the creature prides itself, like the can- tankerous man, on being very brave because of all this unneces- sary biting and fighting, we have no means of knowing. p. Capacity Determined by Sphere Lyell mentions that when companies were formed in England to work the mines in Mexico, some of the English miners who were sent out, being fond of field-sports, brought grayhounds with them, to have the pleasure of cotusing on the Mexican mountains, which abound in hares. They found, however, to their great mortification, that the dogs were quite unable to come up to the hares of Mexico. This is explained by recollecting that these gray- hounds, being transferred from the low and flat lands of Eng- land to a mountainous country raised several thousand feet above the level of the sea, and thus experiencing a consider- able diminution of atmospheric pressure, became short-winded, a"nd incapable of running down their game. But in the course of a few years, their offspring which were born and brought up in the new country, having their chests and respiratory systems 40 DICTIONARY OF adapted to this elevated situation, proved themselves in ranning down hares fully equal to their parents in England. s. Capricious Disposition, The — The genus Gueiion com- prises about thirty species of monkeys. GeoffroyjSaint-Hilaire says : " They have a singular aptitude in passing from gaiety, which is otherwise their usual state, to melancholy, from melan- choly to joy, and from joy to anger in a few seconds, and from the shghtest causes. We see them ardently desirous of obtain- ing a certain object, testifying the liveliest pleasure if allowed to possess it, and almost immediately after throwing it away with indifference, or breaking it in a fit of rage. We also see them delighting in the society of another animal, evincing in their own way the most tender- regard for it, and then suddenly becoming irritated, pursuing it with hoarse cries, and biting it as if it wfere an enemy ; immediately peace is made, and the caresses recommence and continue, until a new caprice brings about the same results." How much all this resembles the pro- ceedings which we see among men and women who are types of the capricious disposition ! m. Carcass=Seekers. — Where the carcass is, there will the vul- tures be gathered. Directly an enterprise is brought to commer- cial ruin, what an awful array of hungry accountants, lawyers, jobbers, and rogues alight upon the scene, greedy, desperate, and keen! Their example seems to be the sociable vulture, an inhabitant of the interior of the Cape of Good Hope, and of the eastern parts of Africa. It dwells in the mountains, where the numerous caves and fissures furnish it with a good shelter in which to pass the night, or to repose during the day after a full meal. At sunrise they are seen perched upon the rocks in large bands ; and from these stations they soar into the air to such a height as to become quite invisible. But, even at their greatest elevation, they still keep a sharp lookout upon the occurrences in the world below them ; for no sooner does an animal die than the vultures are upon it, " seeming," as Le Vaillant expresses it, " to escape from a cavern in the sky." If a hunter kill an animal which he cannot remove at once, he SCIENTIFIC ILLUSTRATIONS. 41 will find on his return that the vultures are already busy on its carcass, although a quarter of an hour previously not one was to be seen in the neighborhood. mu. Cast Down, but not Destroyed. — The hawk's-bill turtle is the animal which furnishes the valuable " tortoise-shell " of com- merce, and is therefore a creature of great importance. The scales of the back are thirteen in number, and as they overlap each other for about one third of their length, they are larger than in any other species where the edges only meet. In this species, too, the scales are thicker, stronger, and more beauti- fully clouded than in any other turtle. The removal of the plates is a very cruel process, the poor reptiles being exposed to a strong heat which causes the plates to come easily off the back. In many cases the natives are very rough in their mode of conducting this process, and get the plates away by lighting- a fire on the back of the animal. This mode of management, however, is injurious to the quality of the tortoise-shell. After the plates have been removed, the turtle is permitted to go free, as its flesh is not eaten, and after a time it is furnished with a second set of plates. These, however, are of inferior quality, and not so thick as the first set. # na. Casuist's Defense, A. — A peculiar organ possessed by many Cephalopoda is the ink-bag, a small pyriform sac, which secretes a dark-brown fluid ; its contents may be discharged into the water, which is thus discolored for a considerable ex- tent. When attacked, the animals constantly employ this arti- fice to facilitate their escape, the inky secretion producing a thick cloud in the water, under cover of which the cuttlefish rapidly retreats to a safe distancQ^ from the object which has excited his apprehensions. He saves himself by this mystifica- tion. The' mind of a casuist performs an analogous feat when hard pressed in argument by an opponent. It is wont to en- velop itself in a thick cloud of words. Under cover of theii* hidden meanings the casuist withdraws in great dignity, and the disputant, who would have been his match in a clear con- troversy, is left alone in defeat. N. h. 42 DICTIONARY OF Cemetery, The Greatest The crust of our earth is a great cemetery, where the rocks are tombstones on which the buried dead hav.e written their own epitaphs. si. Change, The Instinctive Love of — The quail, even when bom in captivity and domesticated, burns with that instinctive love of change which distinguishes its species generally. At the usual season of migration captive quails become very un- easy, walk up and down their cages, and throw themselves against the bars with such force that they frequently fall back stunned, and sometimes even crush in their skulls, j^ In their case there obviously is operating something beyond the ordi- nary considerations of climate and need of food which stir many descriptions of wild birds to migrate. It would seem to be an instinctive love of change. The same inspiration is often seen in human beings. Some who, like the captive quails, have never had liberty to move into unknown spheres, and therefore cannot know whether removal were better or worse, are never- theless often stirred with the strongest impulses to make some sort of change. The captive-born quail cannot know that numbers of his species every year leave the regions of Africa, cross the Mediterranean, and about the commencement of May spread themselves over Europe, returning again in September to accomplish the same journey. Yet there is within him an impulse as strong as they possess to seek liberty and change at Nature's appointed time. The instinct is not superseded by domestication. Like some men whom monotony drives nearly mad, he will risk his life in the attempt to follow where in- stinct prompts. RE. Change the sine qua non of Life. — Oxide of carbon is a poisonous gas. It is truly called a poison, because its action is deleterious even in slight doses, no matter what may be the slate of th« atmosphere. Carbonic acid is only deleterious when the quantity in the atmosphere is such that the absorption of oxygen is frustrated. Carbonic acid passes to and fro, leaving the blood otherwise unaltered ; but oxide of carbon really kills the blood. If we take a little venous blood and expose it to SCIENTIFIC ILLUSTRATIONS. 43 oxide of carbon, it becomes instantly scarlet. In appearance the change has been nothing more than would have occurred had oxygen instead of the oxide been employed. But in fact die change has been very considerable. The effect of oxide is to render the blood-disks incapable of that process of exhalation on which the activity of the organism depends. The blood, to all appearance, preserves its vitality, for neither the form nor the color of its disks is altered ; but the blood is really dead, because its restless changes are arrested.' Ever wonderful is the fact constantly obtruding itself upon us, that life is inseparably linked with change, and that every arrest is death. Only through incessant destruction and reconstruction can vital phe- nomena emerge — an ebb and flow of being. The moment we preserve organic matter from destruction we have rendered it incapable of the restless strivings of life. A spirit like that of Faust seems ranging through all matter ; and if ever it should say to the passing moment, " Stay ! thou art fair," its career will be at an end. ' ph. Change without Radical Alteration, Superficial. — The Indians of South America have a curious art by which they change the colors of the feathers of many birds. They pluck out those from the part which they wish to paint, and inocu- late the fresh wound with the milky secretion from the skin of a small toad. The feathers grow of a brilliant yellow color, and on being plucked out, it is said, grow again of the same color without any fresh operation. 1 Here we have an illustra- tion of an attractive change which is merely of a superficial character. Of course the birds which are operated upon in this way remain quite unaltered in habits and disposition ; and any person who judges of the nature of the bird by its colors is utterly deceived. One of the triumphs of civilization con- sists in decking out men and women so as to improve their ex- ternal appearance as much as these Indians improve that of the birds. One of our greatest follies consists in being taken in by the imposture. Decorations and stylish behavior no more alter the character of men and women than the milky secretion 44 DICTIONARY OF of the toad alters the character of the birds. Do not judge the habits of the birds by colored feathers. Do not accept human beings as worthy your confidence merely because their aspect is attractive. They may be detestable persons in nature, and the appearance which has pleased you may be merely the superficial attraction with which the tricks of art have endowed them. TR. Character, Tests of. — There are tests by which the char- acter of rock may be understood. The presence of carbonate of lime in a rock may be ascertained by applying to the surface a small drop of diluted sulphuric, nitric, or muriatic acid, or strong vinegar ; for the hme, having a greater chemical affinity for any one of these acids than for the carbonic, unites immedi- ately with them to form new compounds, thereby becoming a sulphate, nitrate, or muriate of lime. The carbonic acid, when thus liberated from its union with the hme, escapes in a gase- ous form, and froths up or effervesces as it makes its way in small bubbles through the drop of liquid. This effervescence is brisk or feeble in proportion as the limestone is pure or im- pure ; or, in other words, according to the quantity of foreign matter mixed with the carbonate of lime. Without the aid of this test, the most experienced eye cannot always detect the presence of carbonate of lime in rocks. It does not do to rely upon mere appearances either in the geological world or the social world. In neither sphere is it wise to assume that things are exactly what they seem. In the one world we test with acids, and in the other with questions. The chemical test, as we have seen, tells us the quality of our rocks ; and the second enables us to ascertain how much manhood is in human bipeds. This moral test consists of questions directed with a view to ascertain how an individual is affected by vice, virtue, misery, nobility, ahd the like ; and according to the effects produced upon him by these test problems depends the character which we assign to him. Goethe intimates that one capital way of testing a man's true character is by ascertaining what are the things which he considers to be ridiculous. e. SCIENTIFIC ILLUSTRATIONS. 45 Character Defacement. — The late George Newport, F.R.S., showed clearly by many experiments that if insects were injured accidentally or intentionally in their larval or chrysalidal state these insects showed traces of the injury in their perfect state. For instance, if a foot was injured in a grub, or the place where the wing or antennse would be developed in the pupa, the foot, the wing, or other organ was defective in the perfect insect.Jtin like manner it constantly happens that human character when mature exhibits the defacement of in- juries done to it in its earhest stages. We can trace imperfect fidelity, imperfect honesty, imperfect truthfulness, and many other blemishes in the dispositions of our friends, to the unfor- tunate injuries inflicted upon ^-arious sides of their character by nurses, parents, teachers, or companions in the early days of its development. mu. Character and Circumstances — Man ought not to be the creature of circumstances, you say ; but, as a matter of fact, you must admit that he is so. The vacillating man, the firm man, the suspicious man, the brave man, are they not all very much what circumstances have made them ? Circumstances are like the soil, and men are like roots. The composition of the soil, like the circumstances of social life, varies singularly in different parts of the globe. In order that every point of the surface of the earth should be covered with vegetation, and that no part of it should be without that incomparable adorn- ment, roots must take very varying shapes in order to accom- modate themselves to these varieties in the composition of the soil. In one place the soil is hard and stony, heavy or light, formed of sand or clay ; in another it is dry or moist ; else- where it. is exposed to the heat of a burning sun, or swept on the heights by the violence of the winds and atmospheric cur- rents ; sometimes it is sheltered from these movements of the wind in the depth of some warm valley. Roots, hard and woody, separated into strong ramifications, yet finely divided at their termination, are requisite for mountain plants whose roots are to live in the midst of rocks or between the stones, in order 46 DICTIONARY OF that they may penetrate between the chinks of the rocks, and chng to them with sufficient force to resist the violence of hmri- canes and other aerial tempests. Straight tap-roots and sHghtly crouching plants are fit for light and permeable soils. They would not suit close, clayey, and shallow soils. Such districts are suitable for plants whose roots stand horizontally just under the surface of the soil. So the circumstances in which some men can flourish would kill others. The brave, self-denying soul would perish in the hothouse of servility : the court fop would wither in the regions of bracing industry. Their roots are adapted to their localities. v. Character Consolidated by Time. — By far the greater number of the stones used for building and road-making are much softer when first taken from the quarry than after they have been long exposed to the air ; and these, when once dried, may afterward be immersed for any length of time in water without becoming soft again. Hence it is found desirable to shape the stones which are to be used in architecture while they are yet soft and wet, and while they contain their " quarry- water," as it is called ; also to break up stone intended for roads when soft, and then leave it to dry in the air for months that it may harden.;}: Dr. MacCulloch mentions a sandstone in Skye, which may be molded like dough when first found ; and some simple minerals, which are rigid and as hard as glass in our cabinets, are often flexible and soft in their native beds : this is the case with asbestos, salite, tremohte, and chalcedony, and it is reported also to happen in the case of the beryl. The marl recently deposited at the bottom of Lake Supe- rior is soft, and often filled with fresh-water shell ; but if a piece be taken up and dried, it becomes so hard that it can only be broken by a smart blow of the hammer. But it is not alone in the geological world that we find an illustration of the fact that character is hardened by time. We see the same truth stamped upon all human experience. For good or evil every man's character becomes consolidated by time. If it is to be shaped so as to be fit for a corner-stone in the SCIENTIFIC ILLUSTRATIONS. 47 Temple of Virtue, the process of preparation should begin early. History is replete with instances of men whose characters might have been wrought into harmonious proportions if the necessary care had been bestowed upon that task at the proper stage ; characters which, in the absence of the requisite shaping, be- came difficult to handle and unsightly to gaze upon. Nor is there any deficiency in- the record of those other characters which, though too plastic for rehance in their earliest stages, nevertheless became, under the seasoning influence of time, like sti-ong monumental columns in the commonwealth. e. Character, A Test for. — A solid is buoyant in a liquid in proportion as it is light and the liquid heavy. Thus the same solid is more buoyant in quicksilver than in water, and in the same liquid cork is more buoyant than lead. A solid which will float in one liquid will sink in another : thus glass sinks in water, but floats in quicksilver; ebony sinks in spirits of wine, but floats in water iUash and beech float in water, but sink in ether. All these effects are explained by the fact that in each case the solid sinks or rises according as it is heavier or lighter, bulk for bulk, than the liquid. The character of man, as he is found in modern society, may be tested upon a somewhat simi- lar principle. Find out what sort of society the man has been able to float in, and you will ascertain something concerning his moral and intellectual weight. The societ)' which will buoy up one man will have no sustaining power for another. A man of solid worth cannot float in giggle. A charlatan has no moral weight, and therefore can always, and in all societies, keep up with the scum. ha. Character and Reputation, The Distinction between. — The size of the pholas and the sharpness of its markings vary in inverse ratio to the hardness of the rock in which it burrows. From the softest sea-beds are taken the largest and most per- fect shells, while those specimens which are obtained from the hard limestone rocks are comparatively small, and the surfaces are rubbed nearly smooth. The very worst examples, however, are those which are found in gritty rocks, interspersed with peb- 48 DICTIONARY OF bles. The shells that have burrowed into such substances are dwarfed, abraded, and often misshapen, and are regarded as valueless except to the physiologist. To him, of course, the pholas which they contain is just as good as any other pholas, for it is in all essentials the same sort of creature, though by reason of its shell an inexperienced amateur might judge other- wise. We must not always judge a creature by its shell, or a man by his reputation. The reputation which a man acquires is somewhat analogous to the pholas shell. It depends a good deal upon the kind of place where he has to work. Some men's reputations get much deformed by constant contact with harsh, objectionable, and unfriendly influences. Other men's reputa- tions become beautiful because of the propitious and happy cir- cumstances which surround the men. Yet the real character of all the men may be identical. We can detect the pholas by his life and habits. We detect a true man in the same way. Many men have had a hard time of it in boring their way through the adamantine social rocks. We must take that fact into account when we are considering their external appearance and reputation ; and we must not doubt but their real character is just as good as that of the smooth courtier who has lived an easy life in burrowing in the luxuriance of palaces. h. Cheering Trifles. — A somber night may, unless you are in an objectionable bed, be made less somber by even the presence of insects. In Canada you may often see the whole air, for a few yards above the surface of a large field, completely filled with fireflies on the wing, thicker than stars on a winter's night. The light is redder, more candlelike, than that of our glow- worm, and, being in each individual alternately emitted and concealed, and each of the million tiny flames performing its part in mazy aerial dance, the spectacle is singularly cheerful. Thus, and in many other ways. Nature provides us with cheer- ing trifles which often enliven the mind when there is nothing else at hand to break the gloom or divert the thoughts. A sparkhng crystal, a sweet flower, a gay bird, a child's song, will often create thoughts which will flit with cheerful brightness SCIENTIFIC ILLVSTRATIONS. 49 across man's melancholy mood, and make him grateful for the • diversion which they have afforded to his musings. ro. Circumstantial Men — The independent man has an ap- pearance which marks him off from the things which surround him. But the circumstantial man takes his color entirely from tlie present circumstances. You notice them, but you might pass him unobserved. He cannot be said exactly to have lost his individuality, but he has abandoned all those evidences by which it is usually indicated. He may have his party colors, but he selects those which are so common as to prevent his ever being distinguished by them anywhere. He is like the caterpillar of a moth .{Noctua algce) which assumes the color of the lichens upon which it feeds, being gray when it feeds on a gray one [Farmelia saxatilis), and always yellow when it feeds on a yellow one (Cetraria juniperina). Or like the caterpillar of the coronet moth [Acronycia ligusirt), which feeds upon the privet, and is so exactly of the color of the under side of the leaf, to which it usualty clings during the day, that a person may have the leaf in his hand without discovering the cater- pillar. ■ p. Circumstances, Accommodation to. — Plants continue closed through the night. Morning brings them recruited vigor, expanding their leaves and flowers to the fullest extent. It has been found, however, that the Leguminosce, placed in a room from which daylight was rigidly excluded, and where they were subjected to artificial light at night, have, after a short period of indecision, been brought to conform to this altered condition, and have closed their leaves during the darkened day, and expanded them at night. mar. Circumstances, Independent of — Nature sometimes cre- ates minds which seem independent of circumstances. She also creates other things which appear to be equally so. Take one example. Owing to their geographical position, the central and western regions of South Africa are almost constantly deprived of rain. They contain no flowing streams, and A'ery little water in the wells. The soil is a soft and light-colored sand, which 50 DICTIONARY OF reflects the sunlight with a glaring intensity. No fresh breeze cools the air ; no passing cloud veils the scorching sky. We should naturally have supposed that regions so scantily sup- phed with one of the first necessaries of life could be nothing else than waste and lifeless deserts : and yet, strange to say, they are distinguished for their comparatively abundant vegeta- tion, and their immense development of animal life. The evil produced by want of rain has been counteracted by the admi- rable foresight of the Creator in providing these arid lands with plants suited to their trying circumstances. The vegetation is eminently local and special. Nothing like it is seen elsewhere on the face of the earth. Nearly all the plants have tuberous roots, buried far beneath the ground, beyond the scorching effects of the sun, and are composed of succulent tissues, filled with a deliciously cool and refreshing fluid. They have also thick fleshy leaves, with pores capable of imbibing and retain- ing moisture from a very dry atmosphere and soil ; so that if a leaf be broken during the greatest drought, it shows abundant circulating sap. Nothing can look more unlike the situations in which they are found than these succulent roots, full of fluid, when the surrounding soil is dry as dust, and the enveloping air seems utterly destitute of moisture ; replete with nourishment and life when all within the horizon is desolation and death. They seem to have a special vitality in themselves ; and, unlike all other plants, to be independent of circumstances. b. Circumstances, Power of Utilizing. — Humming-birds, colibris, and their brothers of every hue, live with impunity in the fearful forests where tropical Nature, under forms often- times of great beauty, wages her keenest strife in those gleam- ing solitudes where danger lurks on every side : among the most venomous insects, and upon those most mournful plants whose every shade kills. One of them (crested, green, and blue), in the Antilles, suspends his nest to the most terrible and fatal of trees, to the specter whose fatal glance seems to freeze your blood forever, to the deadly manchineel. It is this par- rakeet which boldly crops the fruits of the fearful tree, feeds SCIEXTIFJC ILLUSTKATJONS. 51 upon them, assumes their hvery, and appears from its sinister green to draw the metallic luster of its triumphant wings. Life in these winged flames, the humming-bird and the colibri, is so glowing, so intense, that it dares every poison. They beat their wings with such swiftness that the eye cannot count the pulsa- tions ; yet meanwhile the bird seems motionless, completely inert and inactive. Leaves, as we know, absorb the poisons in the atmosphere ; flowers exhale them. These birds live upon flowers, upon these pungent flowers, on their sharp and burn- ing juices — in a word, on poisons. From their acids they seem to derive their sharp cry, and the everlasting agitation of their angry movements. That part of the earth where man peri.shes or decays is the scene of triumph of the bird, where his extraor- dinary pomp of attire, luxurious and superabundant, has justly won for him the name of bird of paradise. It matters not! Whatever their plumage, their hues, their forms, this great winged populace, the conqueror and devourer of insects, and, in its stronger species, the eager hunter of reptiles, sweeps over all the land as man's pioneer, purifying and making ready his abode and rendering practicable the entrance to this dangerous fairy-land. Nature endows the birds, as she also endows men, with a marvelous capacity of accommodation to circumstances. Beautiful birds are not made out of what we should consider wholesome food, and beautiful characters are not made out of the choice events of human history. Nature supplies us with an appropriate power whereby we transmute everything to the purposes which she intends us to serve. We see what the birds can do with poison. We know to what splendid purposes genius has been able to turn poverty, jails, cruelty, persecution, and torture. Some of the finest characters in history liave been reared by, and flourished upon, these unpromising elements. We degrade not ourselves and our purposes to circumstances, but utilize circumstances for our necessities and purposes. The bird does not take the poison and submit to death : it trans- mutes it into life and beauty. The hero does not let circum- stances subdue him : he makes circumstances subserve the growth of his character. 52 DICTIONARY OF Circumstantial Evidence, A Hint Respecting — It is impossible to be too wary in our reception of circumstantial evidence. Countless errors are committed through that class of evidence being accepted without proper inquiry. Let us illustrate this by a reference to conchology. Generally when a shell is found on our shores, it is presumed to be a genuine American species and is classified as such ; on the same principle that any plant, insect, reptile, bird, or mammal is considered as indigeneous if it be discovered in a living state within our waters. But this ought not to be the case with shells. A collector might discover some spot on our coast which was rich in shells hitherto excluded from the American list, and yet be entirely mistaken if he were to consider them as true inhabitants of our shores. The fact is, that great quantities of shells are often conveyed from one country to another among the ballast, and when the sailors throw away the ballast overboard, they also iiing into the sea various shells among the stones and sand. These shells are subsequently washed up by the tides, or dashed on the shore in a storm, so that they are picked up by hand, or inclosed in the multifarious contents of a dredge. Sometimes, too, a ship in ballast is cast upon the shore and beaten to pieces by the waves, when the ballast is necessarily thrown out, and in a year or two becomes a part of the shore. In this way many enterprising collectors have been deceived, and their mis- take has not been discovered until many years afterward. c. s. Civilization a River — In its influence upon barbarism, and in its fructifying, fertilizing movement throughout the world, civilization resembles a beneficent river in a desert land. We may compare it, for example, to the Nile. The ancient Egyp- tians looked upon their country as a gift from the river, whose periodical inundations yearly deposit on the soil a new layer of that fertile mud to which the land of the Pharaohs owes its proverbial fecundity. Fluvial deposits, by their gradual accumu- lation through a long series of years, have constituted immense masses and entire strata of soil. Egypt, in fact, N\as conquered SCIENTIFIC ILLUSI^RATIONS. 53 from the desert by the river. " The world," says Miss Marti- neau, " has seen many struggles, but no other so pertinacious, so perdurable, and so sublime as the conflict of these two great powers. The Nile, ever young, because perpetually renewing its youth, appears to the inexperienced eye to have no chance, with its stripling force, against the great old Goliath the desert, whose might has never relaxed from the earliest days till now ; but the giant has not conquered it." The river has completed its mighty task ; as civilization, in due time, will accomplish hers. MV. Climate and Character. — The disposition of the animal seems not less marked by the climate than the figure. Both at the Line and the Pole the wild quadrupeds are fierce and untamable. Africa has ever been remarkable for the fierce- ness of its animals : its lions and its leopards are not less terri- ble than its crocodiles and its serpents ; their dispositions seem entirely marked with the rigors of the climate ; and being bred in an extreme of heat, they show a peculiar ferocity that neither the force of man can conquer nor his arts allay. The food also is another cause in the variety which we find in quadrupeds of the same kind. Thus the beasts which feed in the valley are generally much larger than those which glean a scanty subsis- ' tence on the mountain. Such as live in the warm climates, where the plants are much larger and more succulent than with us, are equally remarkable for their bulk. The ox fed in the plains of Hindustan is much larger than that which is more hardily maintained on the sides of the Alps. The deserts of Africa, where the plants are extremely nourishing, produce the largest and fiercest animals. But it is not only in the case of the lower animals that we see the omnipotent influences of climate upon character, for those same influences are obser- vable in mankind. The color, the form, the pursuits, the habits, the diseases, and the religions of men are often the result of climate. This being so, we ought to correct some of those bigoted judgments which we are too prone to pronounce upon the ways of other nations when they differ from our own. a. 54 DICTIONARY OF Climate on Intellect and Morals, The Effects of. — It may startle to declare that the intellect and even the morality of peoples have hitherto been wonderfully affected by climate. The Laplanders inhabit the northernmost coasts of the Scandi- navian peninsula. They are ignorant, uncultivated, and torpid rather than savage. In spite of their frequent contact with the Russians and the Swedes, they have no industrial resources, no art, no other commerce than that which is afforded by the products of the chase, of their fisheries, or their herds of rein- deer. Christianity, to which they were converted about two centuries ago, has not aroused them as yet from their moral and intellectual lethargj?-. All religion being reduced, so far as they are concerned, to oral tradition, the devotion of each is in proportion to his memory. Education among them has attained to this standard, that a Laplander who knows his alphabet corresponds to a young man among us who has graduated at Harvard or Yale. d. Colony Wisely, How to Inaugurate a. — At certain pe- riods of the year the penguins assemble on the beach as if they preconcertedly met for deliberation. These assemblies last for a day or two, and are conducted with an obvious degree of solem- nity. When the meeting results in a decision, they proceed to work with great activity. Upon a ledge of rock, sufficiently level and of the necessary size, they trace a square with one of its sides parallel and overlooking the edge of the water, which is left open for the egress of the colony. Then with their beaks they proceed to collect all the stones in the neighborhood, which they heap up outside the lines marked out, to serve them as a wall to shelter them from the prevailing winds. They after- ward divide the inclosure into smaller squares, each large enough to receive a certain number of nests, with a passage between each square. | No architect could arrange the plan in a more regular manner. What is most singular is that the alba- tross, a bird essentially aerial and adapted for flight, associates at this period with these half-fish, half-birds, the penguins ; so that the nest of an albatross may be seen next the nest of a SCIENTIFIC ILLUSTRATIOXS. 55 penguin, and the whole colony, so differently constituted, ap- pears to live on the best terms of intimacy. Each keeps its own nest. Other sea-birds come to partake of the hospitality of the little republic. With the permission of the masters of the coterie they build their nests in the ^'acancies that occur in the squares. Now, if we contrast the way in which these birds inaugurate their colony with that which is often pursued by mankind, we shall find that the former exhibit quite as much wisdom as the latter, and perhaps more so. For instance : before the birds start they have an open assembly of all those who are interested in the question. There is no limitation of the franchise. AVhen they meet there is no hurry and no wrangling ; their whole demeanor is that of deliberation. After coming to a decision they act upon it. The conference does not end in sentiment ; it results in most systematic work — work undertaken and carried out without any further hesitation or planning. Then, having effected their own arrangements, they proceed upon a liberal policy toward other tribes. They are not arbitrary, aggressive, or exclusive. They freely allow others to come and take up their residence with them. The result of all this wisdom is a happy and prosperous community. When modem men colonize, they are apt to pass swaggering resolu- tions at big assemblies, and with much noise to proceed to their work with the Bible in one hand and murderous weapons in the other. They bluster about their rights and are intolerant of the existence, anywhere near them, of even the men whose land they liave taken for their colony. It is a question whether, with all their shrewd policy and their stupendous and unscrupulous use of brute force, they are as successful or happy as they might be if they learned their colonization catechism from the penguins. RE. Colored by our Associations. — Although the natural hue of the pholas (boring-shell) is white, it is often stained with the color of the substance in which it is embedded ; and when it lives in the red sandstone, the red is often so deep that it might easily be taken for the natural color of the shell. Like 56 DICTIONARY OF the stock-jobber on the Exchange, the man at the clubs, or the conventional rehgionist, the pholas is toned by its associations, and cannot preserve an independent color. c. s. Colossal Works Unconsciously Achieved. — When the sea has left a coral reef for some time it becomes dry, and ap- pears to be a compact rock, exceedingly hard and rugged ; but no sooner does the tide rise again, and the waves begin to wash over it, than millions of coral worms protrude themselves from holes .on the surface which were before quite invisible. The growth of coral ceases when the worm which creates it is no longer exposed to the washing of the tide. Thus a reef rises in the form of a gigantic cauliflower, till its top has gained the level of the highest tides, above which the worm has no power to carry its operations, and the reef, consequently, no longer extends itself upward. "/fThe surrounding parts, however, ad- vance in succession till they reach the surface, where they also must stop. Thus, as the level of the highest tide is the even- tual limit to every part of the reef, a horizontal field comes to be formed coincident with that plane, and perpendicular on all sides. The reef, however, continually increases, and, being pre- vented from going higher, extends itself laterally in all direc- tions. The nature of the coral worm does not permit of its working in any other way, and thus, without any design on its part, the necessary result of its activities is the accomplishment of grand results. It is more than probable that the human race are, in like manner, working out some grand design of the great Architect of the universe, of which they ha^'e no more an adequate conception than the coral worm has of the fact that it is engaged in making an island. mv. Combination of Utility and Beauty, A. — Sometimes we meet a man whose character is as beautiful as his versatile abilities are useful. We are amazed almost at the many differ- ent ways in which our admiration is challenged by the variety of his valuable works and accomplishments, and the diversity of uses to which his great powers may be apphed. He re- SCIEXTIFIC ILLUSTRATIOXS. 57 minds one of that native tree of South America, -the papaw. 7lts splendid appearance resembles the palm. But it has more than mere beauty of form. It is embellished with luxuriant yellow fruit ; and this fruit, besides being savory and aromatic, has many extremely remarkable properties. Its milky juice ex- hales, when burned, an ammoniacal odor, and chemical analysis has recognized therein the presence of fibrine. Mix some of this juice in water, plunge into the mixture fresh hard meat, and in a few minutes it will become exquisitely tender.-^^ The very exhalations of the tree operate in the same manner, and the inhabitants of the regions where it flourishes suspend to its branches such meat and poultry as they wish to soften. Won- drous combination of beauty and utihty ! d. Combination Is Strength. — The house-martin [Chelidon urbica), a common summer visitor to all parts of Europe, seems quite to understand that combination is strength. These birds possess some sort of inteUigence with each other which enables them to combine their efforts to effect some desired purpose. Dupont de Nemours says : " I once saw a martin which had unfortunately, I know not how, caught its foot in the running knot of a thread, the other end of which was at- tached to a gutter of the College des Quatre Nations. Its strength being exhausted, it hung and cried at the end of the thread, which it raised sometimes by trying to fly away. All the martins of the great basin between the bridge of the Tuile- ries and the Pont Neuf, and perhaps from a still greater dis- tance, collected to the number of several thousands. They formed a cloud, all emitting cries of alarm and pity. After much hesitation and a tumultuous consultation, one of them invented a mode of delivering their companion, made the others understand it, and commenced its execution. All those that were within reach came in turn, as if running at the ring, and gave a peck to the thread in passing. These blows, all directed upon the same point, succeeded each other every second, or even still more frequently. Half an hour of this work was suffi- 58 DICTIONARY OF cient to cut through the thread and set the captive at liberty." No union of men for a common purpose could more completely illustrate the truth that combination is strength. mu. Combination and Recombination : Principles of Na- ture. — It is noticeable that, in human society, individuals rarely have any independent action. Men combine into sects and parties, or cliques or partnerships, dissolve their associations and recombine again, in order to carry on the affairs of the world. Isolated action is seldom seen. It is remarkable of the simple substances that they also are generally in some compound form. Thus oxygen and nitrogen, though in mix- ture they form the aerial envelope of the globe, are never found separate in Nature. Carbon is pure only in the diamond. And the metallic bases of the earths, though the chemist can disen- gage them, may well be supposed unlikely to remain long un- combined, seeing that contact with moisture makes them burn. Combination and recombination are principles largely pervad- ing Nature. There are few rocks, for example, that are not composed of at least two varieties of matter, each of which is again a compound of elementary substances. What is still more wonderful with respect to this principle of combination is that all the elementary substances observe certain mathematical proportions in their unions. When in the gaseous state, one volume of them unites with one, two, three, or more volumes of another, any e.xtra quantity being sure to be left o\-er, if such there should be. Combinations by weight are also governed by fixed and unchanging laws of the greatest beauty and sim- plicity. It is hence supposed by some that matter is composed of infinitely minute particles or atoms, each of which, belonging to any one substance, can only (through the operation of some as yet hidden law) associate with a certain number of the atoms of any other. There are also strange predilections among substances for each other's company. One will remain com- bined in solution with another, until a third is added, when it will abandon the former and attach itself to the latter. A fourth being added, the third will perhaps leave the first and SCIENTIFIC ILLUSTRATIONS. 59 join the new-comer. The extent to which this law of combina- tion operates in human society, and has operated since the be- y'nning of the world, is obvious. ve. Combination, Results of Right. — The lovely and fragrant rose is composed of no more than a little carbon and water, some ammonia, and perhaps some iron superadded ; and when disintegrated in the chemist's laboratory, can be presented as a few grains and drops of colorless relic. th. Commerce the Great Uniter Diversity of chmate and season — of summer and winter — over the globe has produced for man's advantage a corresponding variety of animal and vegetable life. Man himself has an organic strength which enables him to exist in every clime ; but other animals and all plants have a more limited geographical distribution, and are endowed with constitutions which enable them to thrive in cer- tain regions only. By means of commerce, however, the short- comings of one climate are happily supplemented by the riches of another, and all the most useful productions growing upon the earth are thus more widely scattered. The necessary inter- change fulfils its purpose of knitting the whole world together in bonds of mutual dependence ; and the man, or set of men, who would restrict commerce between the various countries have obviously failed to understand one of the greatest and most important of Nature's designs. be. Commotion, The Advantages of a. — A political com- motion often does immense service in clearing the moral atmo- sphere of its corruption. A religious commotion is often of incalculable value in driving away cant, hypocrisy, priestcraft, and fraud. These things may be well illustrated by a storm of wind. It is often observed that storms are followed by a sensi- ble improvement in the air, and by a feeling of increased com- fort ; hence it may be inferred that they are sent to cure some- thing going wrong in Nature's household. "We know that the storm frequently checks the pestilence when human skill fails. On the banks of La Plata in South America, there is a wind which comes charged with the germs of intermittent fever from 6o DICTIONARY OF the marshes lying to the north. The wretched inhabitants droop and sicken and shiver into their graves. Suddenly a hurricane sweeps across the pampas from the cold summits of the Andes in the southwest, and in a few days the seeds of the disease are roughly yet effectually expelled by its searching force. Cholera epidemics in this country have usually been attended with great stillness in the atmosphere, by which the operation of causes tending to concentrate the poison was no doubt favored. Therefore when we hear the stormy wind howl- ing round our houses, or sweeping through courts and streets, let us think of it as one of Nature's most efficient sanitary agents, by which she renovates the air, tainted through stagna- tion, and destroys the seeds of the pestilence that were growing up for our destruction. be. Compensation, The Law of. — The makers of nice astro- nomical instruments, when they have put the different parts of their machine together and set it to work, find, as in the chro- nometer for instance, that it is subject in its performance to many irregularities and imperfections — that in one state of things there is expansion, and in another state contraction among cogs, springs, and wheels, with an increase or diminu- tion of rate. This defect the makers have sought to overcome, and, with a beautiful display of ingenuity, they have attached to the works of the instrument a contrivance which has had the effect of correcting these irregularities, by counteracting the tendency of the instrument to change its performance with the changing influences of temperature. This contrivance is called a cojiipeiisation, and a chronometer that is well regulated and properly compensated will perform its office with certainty, and preserve its rate under all the vicissitudes of heat and cold to which it may be exposed. In the clockwork' of the ocean, and the machinery, of the universe, order and regularity are main- tained by a system of compensations. A celestial body as it revolves around its sun flies off under the influence of centrifu- gal force ; but immediately the forces of compensation begin to act, the planet is brought back to its elliptical path, and held SCIEXTIFIC ILLUSTRATIOXS. 6 1 in tlie orbit, for which its mass, its motions, and its distance were adjusted. Its compensation is perfect. t. Compensation in Modes of Power If an insect's power of flying is not considerable, its power of traction and propulsion are immense compared with the vertebrate animals, and in the same group of insects those that are the smallest and lightest are the, strongest. The proportion between the muscular strength of insects and the dimension of their bodies would not appear to be on account of their muscles being more numerous than those of the vertebrate animals, but on account of greater in- trinsic energy and muscular activity. i. Compressibility, The Limits of. — Compressibility is the property in virtue of which the volume of a body may be dimin- ished by pressure. This property is at once a consequence and a proof of porosity. Bodies differ greatly with respect to com- pressibility. The most compressible bodies are gases : by suffi- cient pressure they may be made to occupy ten, twenty, or even a hundred times less space than they do under ordinary circum- stances. In most cases, however, there is a limit beyond which, when the pressure is increased, they become liquids. The 'com- pressibility of solids is much less than that of gases, and is found in all degrees. Stuffs, paper, cork, woods, are among the most compressible. Metals are so also to a great extent, as proved by the process of coining, where the metal receives the impres- sion of the die. Here also there is in most cases a limit beyond which, when the pressure is increased, bodies are fractured or reduced to powder. So, too, with bombastic sermons, and with sensational newspaper articles. Comjiression reduces the former into sentimental drivel, and the latter into intellectual dust. EL. Conduct Shaped by Constitution. — Among the Albinos of the Isthmus of Darien, the practice of sitting up at night and sleeping in the day is prevalent. Speaking of them. Wafer, an old traveler, says : " They see not well in the sun, their eyes being weak and running with water if the sun shines toward them, so that in the daytime they care not to go abroad, unless 62 DICTIONARY OF it be a cloudy, dark day. But notwithstanding their being thus sluggish and dull in the daytime, yet when moonshiny nights come they are all life and activity, running about in the woods and skipping about like wild bucks, running as fast by moon- light even in the gloom and shade of the woods as the other Indians do by day." s. Congregational Union, A. — C(f)ngregationalism reminds one, said the Rev. T. T. Lynch, of what the naturalists sometimes talk about, and a queer thing it is. ivThere is a composite crea- ture called the king-rat. It is not common, but it is to be seen in certain museums. It appears that rats, which are very fra- ternal creatures after a fashion, associate with one another in such a way that their tails get fastened together, and there are sometimes as many as twenty rats making up one king-rat. Their heads are all stretched outward in a circle, and their tails all compacted and agglutinated together, nobody exactly knows how;.;. Congregationalism is very much like that. All the tails are agglutinated together ; it is a compound creature, the heads all outward ready to run different ways, the tails amalgamated in this queer fashion, so, that no individual can move freely, and neighbors hamper instead of helping one an- other. Behold in figure a Congregational Union ! t. l. Conscience, The. — The hour of the day can be told be- tween the tropics by the motion of the magnetic needle as well as by the oscillations of the mercury in the barometer, the mysterious march of the needle being equally influenced by the course of the sun and change of place upon the earth's surface. There are regions of the earth where the seaman, enveloped for days in fog, without light of the sun or stars, without all other means of ascertaining the time, can still accurately determine the hour by the variation of the dip of the needle, and know whether he be to the north or south of the part toward which he would steer his course. And does not every enlightened man carry with him an inward monitor which, in like manner, enables him rightly to steer his course amid all the conflicting SCIENTIFIC ILLUSTRATIOX.S. 63 expediencies and surging tempests of his daily life ? Whether it be called conscience matters not. We are not concerned about the name when we are conscious of the power. That power we know exists, and is our safe regulator and unfailing guide in all our experiences on life's changeable sea. k. ' Conscious Strength Despises Tricks There are many little birds which, in order to decoy aggressors away from their nests, are obliged to resort to tricks of deceit which are often successful. Large birds, like great souls, despise tricks, and rely solely upon their strength. The swan is a good illustration of this. Swans care but little for concealing their broods, as they feel confident of their power to protect them against every enemy. They will fight even with the eagle itself, harassing it with beak and wings until the marauder is glad to make a more or less honorable retreat. In the protection of their young they display extraordinary courage and resort to no stratagem. As it is always gratifying to see courage conquer cunning, it is in- teresting to know that even foxes are sometimes killed by the'm. ^ RE. Consumption without Proportion Some caterpillars daily eat double their weight in food ; a cow eats forty-six pounds daily, and a mouse eats eight times as much in propor- tion to its own weight as is eaten by a man. * This consumption without proportion is a wonderful fact, and we may recognize its operation among mankind. We need not confine our view to princelings or courts to discover men who are constantly con- suming that which we should have judged was out of all rea- sonable ratio to their needs. One man absorbs the emoluments of pensions and sinecures the value of which would make whole villages happy ; the rent-roll which another appropriates would furnish substance for victualing an entire city. In contemplat- ing such a spectacle, which coexists with the poverty and suf- fering of a portion of mankind, we may consider we have indeed discovered an anomaly ; for this gigantic-personal-appropriation order of men cannot, in defense, require that we place them in 64 DICTIONARY OF the same list with the cow, the mouse, and certain caterpillars — for the simple reason that these creatures are obeying the natural law which applies equally to all their kind. ph. Contrariety in Character. — The quick and sprightly eye of the swallow, the ever-twittering voice, now a low plaintive cry, and now a ga);- shrill scream, all denote a being of marked character. And this character is strange enough ; it might be termed a psychological riddle. For while the swallow builds her nest confidingly and with domestic quiet beneath man's roof, beside his hearth even, she at the same time pursues her noisy journeys and gives way to her love of unrestrained and aimless wandering. While she, on the one hand, carries her vaunted cleanliness to wearisome punctuality, she, on the other, builds up the walls of her dwelling with dirt and mud. She is an illustration of that contrariety in character which is exhibited by so many of the human family. ST. Contrast, Things Appreciated by. — We appreciate things by contrast. For example, nowhere, from the force of contrast, is summer more brilliantly joyous or its approach welcomed with greater delight than in polar regions, where amid perennial frost and snow winter seems to be enthroned forever. The long-continued night, after passing through a tedious dawn, at length opens into that bright, brief intei-val, in which spring, summer, and autumn are blended into one. In rays of warmth the sun sends forth her signal and Nature answers to tlie call. As heat increases, the sohtude once more shows signs of life and movement. The frozen lumps and ledges covering the sea begin to strain and crack and split asunder, and glacier masses breaking loose from their icy cables yield themselves up to the current and to the wind. Creatures that have long been slum- bering in caves, or amid the snow, now shake off their torpor. The short thick grass and moss spread their carpet of green over every sheltered nook from which the snow has melted, and the rest of the scanty but often brightsome flora of remot- est North puts on with marvelous rapidity its summer aspects. SCIENTIFIC ILLUSTRAIIONS. 65 Here is indeed a scene which, by contrast, can be well appreci- ated. Spenser in his " Faerie Queene " indicates others : " Sleepe after toyle, Port after stormie seas, Ease after warre, Death after life, Doth greatly please." BE. Conventional Opinion. — The clearest proofs abound that in numberless cases rivers have simply availed themselves of the courses prepared for them by previous breaks in the rocks, opening depressions along which the waters have passed. Take one of the largest of European streams, the Danube, and trace it from its source in the flat plateaus of Central Germany in which it rises, and you see that while it never can have been a torren- tial stream, it simply maintains a steady slow-flowing current as it winds through the steep defiles and high cliffs of the hard- est gneiss and granite which had been opened out to receive it ; for even now, where the gorges are deepest and narrowest, and where the river must therefore have exerted its greatest power, the buildings of Roman times have been daily bathed by the stream, and not a fragment of them has been worn away. When, indeed, we look to the lazy-flowing, mud-collecting Avon, which at Bath passes along that line of valley, how clearly do we see that it never deepened its channel ! Still more when we follow it to Bristol and observe it passing through the steep gorge or hard mountain limestone at Clif- ton, every one must then be convinced that it never could have produced such an excavation. In fact, we know that from the earliest periods of history it has only accumulated mud, and has never worn away any portion of the rock. The clear infer- ence then, in these and countless other instances, is that rivers in all such cases simply flow in the gorges and depressions pre- pared for them by previous geological conditions. They resem- ble the serene movement of conventional opinion as it flows through society. It never cuts out for itself an independent 66 DICTIONARY OF course, never invents a new turn or change, never removes any objectionable impediment. It flows torpidly along the old chan- nels which superstition has made convenient for it. Its his- tory is altogether unlike that of the current of sincere thought, which, bursting up from the deep wells of truth, carves its own way through every obstruction, however mighty, and accom- plishes its destiny without any adventitious aid. si. Convulsive Action, Evils Attendant on.^ — Convulsions, whether religious, political, or material, are attended with alarm- ing contingencies. For instance : rivers are stated to have sometimes run dry during earthquakes, and again begun to flow after the shock. This is presumed to arise either from the transit of an earth-wave along their courses up-stream, thus damming off their sources, or from sudden elevation of the land and as sudden depression. In like manner, in times of religious revivals common sense and reason are often dammed completely up, and the wild tide of fanaticism rushes over every- thing ; while in political convulsions the liberty of the press and of the subject are either elevated in a manner absolutely dan- gerous to any community, or crushed into depths which plunge a country into despair. In point of fact, all sorts of convul- sions are attended with all sorts of inconveniences and dan- gers ; and no sensible man, however anxious for any change, would in the face of facts wish for it to be effected by that kind of phenomena. ma. Counterfeiting, The Power of. — Montaigne records some singular instances of counterfeits which were followed by sad realities. We have, on the other hand, to notice very often in the present day counterfeits which escape punishment. People counterfeit sickness and piety, and are most successful. They are equal to the fox in their power to sham. One of the most ''frequent stratagems of the fox, and which denotes an extraordi- nary amount of intelligence, consists in simulating death when surprised by the hunters and there is no hope of safety by flight. It may then be handled, kicked about in every direction, even lifted by the tail, hung up in the air, or carried thrown over SCIEXriFIC ILLL'STRATIOA'S. 67 one's shoulder, without showing the shghtest sign of vitality. But as soon as released and opportunity for escape offers, it will decamp with all haste, to the great amazement of those so cleverly duped. m. Cowardice, The Tactics of. — Cowards are like cats. Cats always take their prey by springing suddenly upon it from some concealed station, and if they miss their aim in the first attack, rarely follow it up. They are all accordingly cowardly, sneak- ing animals, and never willingly face their enemy unless brought to bay or wounded, trusting always to their power of surprising their victims by the aid of their stealthy and noiseless move- ments. ND. Cowards, The Insolence of. — In the Western States there exists a very curious species of rodents, belonging to the subgenus Spermophilus or Spermatophilus, that is, grain-eaters. They are better known by the hunter's name, prairie-dogs. The Hon. C. A. Murray, in his " Travels in North America," remarks that their number is incredible, and their cities (for they deserve no less a name) full of activity and bustle. They seem on the ap- proach of danger always to retire to their own homes ; but their great delight apparently consists in braving it with the usual insolence of cowardice when secure from punishment ; for as you approach they wag their little tails, elevate their heads, and chatter at you like a monkey, louder and louder the nearer you come ; but no sooner is the hand raised to any missile, whether gun, arrow, stick, or stone, than they pop into the hole with a. ■J rapidit)#)nly equaled by that sudden disappearance of Punch with which when children we have been so much dehghted, D. Crafty, The Tricks of the. — You cannot do business with the crafty bad man with any safety. You may take what you consider guaranties and securities for his appearance at the right time to perform the agreement that he has made with you, but somehow or other you cannot hold him even in this way. Subtle and deceitful, he contrives to slip away at the moment you thought him secure. He represents honor and 68 DICTIONARY OF truth as being parts of himself, but somehow or other he is not detained when you want him by the one or the other. He eludes you like the glass-snake, which, when pursued and touched, will contract the muscles of its tail with such exces- sive force as to snap off that member, or will even divide itself into two or more pieces, and thus uncatchable will then glide away from even these parts of itself into some place where its snake life can recuperate itself in safety. The tricks of this man and the movements of this snake warn us to avoid alike the biped and the reptile. il. Crafty Rogue, The. — To what shall we compare that crafty rogue who, either in the character of a cunning director of bubble companies, or in that of a jobbing promoter of impos- sible undertakings, or in that of a plausible trickish attorney, gives himself up to the work of entrapping his fellow-men that he may ruin them for his own benefit ? He is similar to that elegant dragon-fly-like insect, the ant-lion [Mynneleon formka- riiis), which is, found in the environs of Paris. Its larvae are met with in great abundance in sandy places very much ex- posed to the heat of the sun. There they construct for them- selves a sort of funnel in the sand, by- describing backward the turns of a spiral whose diameter gradually diminishes. Their strong square head serves them as a spade with which to throw the sand far away. They then hide themselves at the bottom of the hole, their head alone being out, and wait with patience for some insect to come near. Scarcely has the ant-lion per- ceived its \'ictim on the borders of its funnel when it throws at it a shower of dust, to alarm it and make it fall to the bottom of the precipice, which does not fail to happen. Then it seizes it with its sharp mandibles and sucks its blood, after which it throws its empty skin out of the hole and resumes the lookout. When this larva reaches perfection it takes wings, and it diffuses an odor of roses not suggestive of pitfalls or tricks, but very pleasant — as are the varied elegances which, when rising into fashion and success, the human craftv rogue displays, i. Credit Wrongly Ascribed.— 'When a New Zealander has SCIENTIFIC ILLUSTRATIONS. 69 received a gunshot or other injury, the priest prays over him, the wound is frequently washed, and all extraneous substances are removed, and no external application is used but water. The invocations of the priests to the spirits are repeated occa- sionally during the time. No married man or woman (except- ing his own wife) is permitted to see the patient during his ill- ness, from a superstitious idea that the spirits would be angry and retard the cure. The excellent constitutions of the natives prevent any unfavorable result, and they recover from most serious injuries in a short time. But the priest gets the credit for having moved the spirits by his prayers, just as in America some fanatics get credit for having moved the Almighty to effect cures which would have been accomplished entirely with- out their intervention. ga. Crises and the Crisis, Tlie. — We have many changes in life, but after all not, perhaps, so many as caterpillars. For the life of a caterpillar seems one continued succession of changes, and it is seen to throw off one skin only to assume another, which also is divested in its turn, and thus for eight or ten times successively. We must not, however, confound this changing of the skin with the great metamorphosis which it is afterward to undergo. The throwing off one skin and assuming another seems in comparison but a slight operation among these animals ; this is but the work of a day, the other is the great adventiu-e of their lives. Probably, without heed- ing the caterpillers, we think too much on the changes through which our life passes. No doubt those changes are impor- tant ; but surely the metamorphosis of the butterfly into wings is trivial compared with the vastness of that last inevitable transformation which we shall undergo, when all our little crises will end in the great crisis of Being. a. Cultivation, The Effects of. — What marvelous encourage- ment man has to work! In all departments of action what splendid results have followed his labor! By what wondrous processes he has been able to develop the beautiful from the crude, the valuable from the worthless! See his work trans- 70 DICTIONARY OF forming even the vegetation of the globe. It has often been remarked that England does not owe a single iiseful plant to Australia or the Cape of Good Hope, countries abounding to an unparalleled degree with endemic species, or to New Zealand, or to America south of the Plata, and according to some authors not to America northward of Mexico. Mr. Darwin does not believe that any edible or valuable plant, except the canary- grass, has been derived from an oceanic or uninhabited island. If nearly all her useful plants, natives of Europe, Asia, and South America, had originally existed in their present condi- tion, the complete absence of similarly useful plants in those great countries would indeed be a surprising fact. But these plants have been so greatly modified and improved by culture as no longer to resemble any natural species, and so one can understand why those countries have given her no plants of use to her in her present state of civilization, for they were either inhabited by men who did not cultivate the ground at all, as in Australia and the Cape of Good Hope, or who cultivated it very imperfectly, as in some parts of America. These coun- tries do yield plants which are useful to savage man ; and Dr. Hooker, in his " Flora of Australia," enumerates no less than one hundred and seven such species in Australia alone ; but these plants have not been improved, and consequently cannot compete in England with those which have been cultivated and improved during thousands of years in the civilized world. By proper cultivation they will become able to do so. They may be almost transformed ; for by his labor man is able out of the growths of the wilderness to develop the blossoms of the rose. VA. Curiosity Seized as a Snare. — In the Makololo territories Dr. Livingstone met with numbers of dragon-fly-looking insects, the larvae of which prey upon ants. These they capture in a peculiar manner. The larva puts its head into a little hole in the ground and quivers its tail rapidly. The ants come near to examine the novel object, and, urged on by curiosity, ad^-ance somewhat too closely, when they are suddenly seized by the SCIENTIFIC ILLUSTRATIONS. 7 1 forcers or graspers with which the vibratory tail is furnished, and thus are killed. Not only do insects and the lower animals understand that the curiosity of their victims may be effectively employed as a snare for them, but human beings understand and act upon the same principle. How many a young man has been utterly ruined by a vicious thing through adopting the apparently harmless course of " going to see what it was like " ! The proprietors of the gaming-tables and the many other depraved resorts of vice have all caught their victims by ensnaring their curiosity. Curiosity is a good servant but a bad master. We should hold its bridle with a firm hand, or it may gallop with us to the point where ruin is ready to clutch us. I. Danger, The Philosophic Way of Meeting. — The hedge- hog upon the approach of any danger rolls itself up in a lump, and patiently waits till its enemy passes by, or is fatigued with fruitless attempts to annoy it. Every increase of danger only increases- the animal's precautions to keep on its guard. The dog vainly attempts to bite it, since he thus more frequently feels than inflicts a wound ; he stands enraged and barking, and rolls it along with his paws ; still, however, the hedgehog patiently submits to every indignity, but continues secure. In this manner the dog, after barking for some time, leaves the hedgehog where he found him, who, perceiving the danger past, at length peeps out from its ball, and, if not interrupted, creeps slowly to its retreat^ Thus, by being patient, wary, and unre- sentful, the hedgehog escapes all injury. An ill-natured cur under similar circumstances would at least have been bitten and worried by the attacking dog. The very fussiness of his defense would have brought him into peril. The lesson to be learned is that in the presence of danger a purely philosophical defensive policy is the most effective. a. Danger ,The Unphilosophic Way of Meeting. — The earth- worm meets threatened danger in a most unphilosophic way. Directly it feels a slight shock in the earth it will hasten to the surface, because it attributes that to the proximity of its enemy 72 DICTIONARY OF the mole. The knowledge that the wormian easily be panic- stricken has been acquired by the lapwings ( Vaiiellus), and these birds use it for their own advantage and the destruction of their victim. The lapwings settle down on fields recently plowed, where they can find an ample supply of worms, and striking against the ground with their feet, induce the worms to come to the surface under fear that the shock is caused by the mole. As fast as the worms come jn fear to the surface they are snapped up by the lapwings. \\ Thus by endeavoring to escape an imaginary danger, the worm encounters a real one. There are many creatures, far higher in intelligence than the poor worm, who follow exactly the same panic-stricken policy in the supposed presence of danger. All weak natures, in fact, are naturally impelled to adopt it. Hence among mankind, for want of self-control and discretion, half our miseries, and often our doom, may be traced to acts caused by the dread of a dan- ger which has existed only in our fears. re. Danger is Slight when Evil is Offensive. — Gas is a great spoiler of the air ; but it has the merit of giving timely warn- ing of the. danger by the horrible smell which accompanies its escape. This smell is perceptible when there is only one part in a thousand parts of air ; becomes very offensive when the proportion is ^io or ¥^0) ^nd is almost insupportable as the proportion increases. If the gas has escaped from a crack in the pipes, and been allowed to mingle with air in which a free circulation by ventilation is impossible, so that the propor- tion of gas amounts to fij-, it explodes on the introduction of a candle. But the reason why this catastrophe so seldom occurs is because the smell of gas is so utterly offensive that the evil demands and receives proper attention long before it reaches danger-point. Tliis fact illustrates very well a great truth in the moral world, namely, that when evil is offensive in itself its danger to the community is sHght. In exact ratio to the plea- santness of vice is the danger to be apprehended from it. ] f gas was not in itself objectionable there would be more ruinous conflagrations^ ph. SCIENTIFIC ILLUSTRATIONS. 73 Danger and Finding Death, Escaping. — We often find men making an attempt to escape from an apparent danger, and by the very act running into a fatal difficulty. They are something like those singular creatures whose habits, and carti- lage, batlike wings have obtained for them the name of flying- fish, which the mariner finds after he has passed about the twenty-seventh degree of latitude. When pursued by other fish they fly in shoals out of the water, and, seeking protection, they alight upon the passing ships. As they have no power to take wing again they fall an easy prey to the sailor. me. Dead to tlie Living, The Ministry of the. — When, says Louis Figuier, the leaves have performed their functions, when the fruits have appeared, matured, ripened, vegetation has en- tered into a new phase ; the lea\'es lose their brilliant green and assume their autumnal tint. A certain air of sadness pervades these ornaments of our fields, which proclaims their approach- ing dissolution. The leaves, withered and deformed, will soon cumber the ground, to be blown hither and thither by the wind. But when separated from the vegetable which has given birth to and matured them, they are not lost to the earth which' receives them. Everything in Nature has its use, and leaves have their uses also in the continuous circle of vegetable repro- duction. The leaves which strewed the ground at the foot of the trees, or which have been disseminated by the autumn winds over the country, perish slowly upon the soil, where they are transformed into the htimus, or vegetable mold, indispen- sable to the life of plants. Thus the debris of vegetables pre- pares for the coming and formation of a new vegetation. Death prepares for new life ; the first and the last give their hands, so to speak, in vegetable Nature, and form the mysterious circle of organic life which has neither beginning nor end. When man has performed his functions here and ended his labors, he too fades like the leaf, and is borne away by the cold breeze of death. But like the leaf in death, so man, though dead, min- isters to the living. He has not merely consumed so much of the productions of the earth, leaving nothing in return. He 74 DICTIONARY OF has left behind him his thoughts, his acts, his example, his ex- periences, written or unwritten, and these will all perform their valuable ministration to the living, as do those lea\'es of autumn to the younger life which grows over their graves. v. Death Better than Starvation. — Sometimes we hold in- quests upon persons who have been destroyed because they would not consent to starvation and to reaching death by that slow process. We are surprised at these suicides, and our com- fortable optimists denounce them. But if you rob life of all that is capable of making it worth having, it is not to be won- dered at that those who are conscious that this has been done, or is about to be done, do not prize hfe. Destruction does not in such a case imply brutality. It may indicate great nervous- ness, fear of the coming ill, or a certain mistaken prudence. -^ The wasps understand all this quite well. Look at the slaugh- ter which goes on in a wasp's nest at the approach of winter. At first the wasps are remarkably tender toward their offspring. They tend the cells where the eggs are hatched, and they nurse the new-born grubs with a devotion quite equal to that displayed by their more esteemed neighbors the bees. Yet no sooner does the first sharp pinch of frost nip them in the autumn than their whole nature, undergoes a change. Their love by some mysterious impulse of instinct is then converted into hate, and falling on the young brood of the nest they ruthlessly destroy them all. But, we may ask, had these grubs been spared, would their fate have been improved ? Food was getting scarce and starvation was in immediate prospect, f^ The progeny of a single wasp in spring mounts up to twenty thousand or thirty thou- sand before the end of autumn, and if most of these were to survive the winter, even supposing there were food for them, it would not be compatible with man's comfort, if even with his existence. be. Death, Anticipating Another's. — M. D'Orbigny describes the Caracaras of South America as accompanying the traveler throughout the vast solitudes of the South American forests, but never making their appearance until he comes to a halt; SCIENTIFIC ILLUSTRATIONS. 75 then suddenly he will see these vultures perching upon the trees in his vicinity, and apparently waiting for the remains of his dinner. Mr. Darwin, however, attributes a far less amiable object to these intruders, and regards this conduct on their part as an evidence of their desire to indulge their carrion-eating propensities at the personal expense of the traveler. Of this he says any one may convince himself " by walking out on one of the desolate plains, and then lying down to sleep : when he awakes, he will see, on each surrounding hillock, one of these birds patiently watching him with an evil eye." It is sad to think that there are among men vulture natures which resemble these birds in the eagerness with which they await the death of other people. Under the names, among others, of heir at law, reversioner, residuary legatee, and executor, there are many keen natures perched about in society, watching for death to strike down other individuals whose remains will be enjoyable. Of course they do not let their wishes become known. From a superficial glance at their demeanor you would judge them to be only interested in their friends' dinner-parties. mu. Death and Resurrection, Our Daily. — We die daily. We are constantly returning to the earth the materials we re- ceived from it. Every movement of our bodies, every exer- cise of thought and will, every muscular and nervous effort, is accompanied by a corresponding change in the structure of our frames — exhausts the vitahty of so much brain, and nerve, and muscle. Every part of our body is undergoing a process of constant disintegration and renovation ; constantly throwing off old effete matter, and constantly receiving deposits of new and hving matter. Day and night, sleeping and waking, this ceaseless dying and ceaseless resurrection is going on with more or less rapidity ; the river of life flows on, changing its particles, but preserving the same form and appearance. In seven years the whole structure is altered down to the minutest particles. It becomes essentially a different body, though the individual still retains his original form and his personal identity unim- paired. B. 76 DICTIONARY OF Death, An Example and an Emblem of. — Though geo- graphical research has dissipated most of the wild stories for- merly accepted in reference to the pecuharly fatal concomitants of the Dead Sea, it well deserves its expressive name. It is a dead sea ; it has neither the ocean's living movement nor deep- sounding roar ; the surf and the spray never sparkle on its rocks ; that " multitudinous laughter " which Homer ascribes to the sea is wholly wanting ; the wind never wakes a smile on its passive and somber countenance. By its shores one might realize Shelley's mournful wish, and feel "In the warm air his cheeks grow cold, and hear the sea Breathe o'er his dying brain its last monotony." It is lifeless, untenanted ; the fish found there, and brought down by the Jordan, are dead. Unlike the Caspian, it is never stirred by the whir of wings — by the flight of gulls, or pelicans, or sea-mews. Tlie migratory birds sweep across it without even a pause, without seeking the prey which they could not find. Its waters are denser than those of other seas : their constituents are different, and mingled in different proportions. d. Deceit, Lucrative. — The fishing-frog is a sluggish fish, and as its ferocious appearance by no means belies its character, it might be supposed that it would have some difficulty in gratify- ing the enormous appetite which must apparently be associated with such a tremendous mouth. It is said, however, that the fish possesses a stratagem by which to satisfy the cravings of its maw without the necessity of subjecting its unwieldy person to any very violent exertion. On the upper surface' of the front of the head are two long movable bony filaments, the foremost of which is dilated at its tip, which has a silvery luster. Lying close to the ground, the fish disturbs the sand or mud so as to obscure the water around it, justly thinking, no doubt, that its appearance is not sufficiently amiable to inspire much confi- dence in the weaker inhabitants of the deep ; it then elevates the filamentous appendages just described, and waves them to SCIENTIFIC ILLUSTRATIONS. 77 and fro in the water, when the small fishes, which are soon at- tracted by the hope that this silvery object is something to eat, become instead the prey of their artful foe. This is said to be the ordinary mode of procuring its -food followed by this fish : and since it is really a mode of living by deceit, it is to be con- fessed that the morality of the creature is no better than that of a number of men and women who really make a form of lucrative deceit the work of their lives. nh. Deceivers, The Ingratitude of. — The Volucellce. have a strong resemblance to the humblebee. Certain kinds make use and abuse of this resemblance to introduce themselves fraudulently into its nests and to deposit their eggs therein. When these eggs have hatched, the larvae, which have two mandibles, devour the larvae of their hosts the bees. This is the return they make for the hospitality they have received. I. Deep Tliought, The Language of — Popular ignorance mistakes a bombastic, turbulent, opaque style. It regards it as the emanation of vast depths of thought which are unrevealable. The fact is that such a style can only exist where thought is shallow, and where the products of scholarship have not been assimilated. The style of the deep thinker is clear because he is a deep thinker, and the style of the charlatan is obscure be- cause he is only a charlatan. In deep ocean the water is won- drously transparent. And why? Because the mineral and organic substances which enter into the composition of the ocean waters are so thoroughly incorporated that, far from altering their limpidity, they seem on the contrary to increase it. In certain parts of the Arctic Sea shells are distinctly visible at a depth of four hundred and fifty feet ; and in the Antilles, at the same depth, the sea-bed is as distinct as if it were nigh the sur- face. The sea grows turbid and yellowish only in those regions where its bed is shallow — muddy only where its agitated waves stir up the sand and hold it in suspension. my. Defenseless, A Natural Defense for the. — There are many kinds of " leaf -rolling " caterpillars, each employing a 78 DICTIONARY OF different mode of rolling the leaf, but in all cases the leaf is held in position by the silken threads spun by the caterpillar. There are plenty of birds about the trees, and they know well enough that within the circled leaves little caterpillars reside. But they do not find that they can always make a meal on the caterpillars, and for the following reason : the cm-led leaf is like a tube open at both ends, the caterpillar lying snugly in the interior. So when a bird puts his beak into one end of the tube, the caterpillar tumbles out at the other, and lets itself drop to the distance of some feet, supporting itself by a silken thread that it spins. The bird finds that its prey has escaped, and not having sufficient inductive reason to trace the silken thread and so find the caterpillar, goes off to try its fortune elsewhere. The danger being over, the caterpillar ascends its silken ladder, and quietly regains possession of its home.'fl CO. Degree Makes all the Difference When a substance combines with oxygen, heat is evolved, and if the union is rapid and fussy, light may be emitted as well. The burning of a candle seems to be a very different thing from the rusting of a nail ; but in truth the latter process is simply a mild and dilatory species of combustion. It is really a little conflagra- tion, though it does not afford sufficient heat to singe the wings of a moth, or sufficient illumination to enable us to read a line.^ PO. Delude, Self and Circumstance Conspire to. — The effects of the mirage are extraordinary, but undoubtedly they are heightened by the imagination of observers, generally over- excited by fatigue, by privations, or sometimes by fever. These causes contribute to vary the nature of the phenomenon as seen by different eyes. Thus some gaze enraptured on verdurous islands, bright as Armida's enchanted garden, with feathery palms, and blooming flowers, and delicious sparkhng lakes ; others see in that dim far-off which is never reached the laugh- ing waves of the ocean, with ships calmly at anchor, or " Veering up and down, they know not why," SCIENTIFIC ILLUSTRATIONS. 79 and camels browsing quietly upon its shores ; others again see before them the rolling river, its banks studded with groves and palaces ; and all this while there is not a solitary real object on the horizon whose presence might serve in some degree as a' foundation for their visions. It is the very phantasmagoria of Nature — her wildest, most wayward, and most fantastic sport. The reiiection of the sky, modified by the inequalities of the soil and the vibratory movements of the air, can alone account for the singular deception. Imagination shows its victim, in the reflected image of the cloudless sky, a sheet of water, which is variously taken for a sea, a lake, or river ; it invests the slightest objects on the earth's surface with forms, colors, and dimensions, which are easily metamorphosed into houses, ships, men, animals ; and it seems certain that those which in Nubia our fancy converts into camels would in the Soudan be trans- formed into elephants, and at Venice into gondolas. Imagina- tion makes us its dupes, and gives to airy nothings "A local habitation and a name." It becomes absolutely necessary, therefore, to distinguish these wholly personal illusions born of a heated brain from those which are really due to a definite physical cause. The latter necessarily suppose the existence of actual objects below or very little above the horizon. Under such conditions, the most fre- quent illusion is that which shows the sky or rocks reflected in the expanse of rarefied air superincumbent on the earth's sur- face, and which through this cause also resembles water. It is then that the ignorant or inexperienced traveler, overwhelmed with fatigue and devoured by thirst, hastens his eager steps to reach more quickly that limpid water where he hopes to refresh and reinvigorate himself, but which flies before his advance, and speedily vanishes altogether. Sometimes it is an inverted representation of terrestrial objects which appears in the air ; or rather these same objects, several times reflected, appear to multiply themselves. d. Delusive Daintiness. — There is a hothouse plant, Pilea 8o DICTIONARY OF allitruhoides, of tender, brittle, and juicy aspect, which looks as if it would be good to eat in a cooling salad, but which is really of so explosive a temperament that it might fairly be called the pistol-plant. When near flowering, and with its tiny buds ready to open, if the plant is either dipped in water or abun- dantly watered, each bud will explode successively, keeping up a mimic Sebastopol bombardment, sending forth a puff of gun- powder smoke or a little cloud of dusty pollen as its stamens suddenly start forth to take their place and form a cross. Some charming acquaintances, whose appearances promise us great pleasure, turn out to be as explosive and delusive as this use- less plant. V. Democratic Principle, The. — The political atmosphere is most healthy whe.i composed of a variety of elements. We know that the theory of the philosophical democrat is, that in order to have a perfect political Constitution you must have a proper representation of all classes of society. In order that the air should be wholesome it is necessary that it should not be of one kind, but the compound of several substances, and the more various the composition to all appearances the more salubrious. But it is chiefly by the predominance of some peculiar vapor that the air becomes unfit for human support, and a thousand accidents are found to increase these bodies of vapor. Heat may raise them in too great quantities, and cold may stagnate them. Minerals may give off their effluvia in such proportion as to keep all other kind of air away ; vegeta- bles may render the air unwholesome by their supply; and ani- mal putrefaction seems to furnish a quantity of vapor at least as noxious as any of the former. All these united generally make up the mass of respiration, and are when mixed together harmless ; but any one of them for a long time singly predomi- nant becomes at length fatal. In like manner it is maintained that society is most safe and most healthy when, on the one hand, no one class is imduly powerful, and when, on the other, no class is unfairly lessened in influence : and that because the objectionable qualities of each are balanced by the compensat- SCIENTIFIC ILLUSTRATIONS. 8 1 ing ingredients of all, it is desirable to preserve to them sev- erally their natural influence and scope, and perfect freedom to insure vitalizing action. a. Depravity, The Specious Appearance of Moral A species of very destructive blasting is known to the farmer under the name of bunt, and to the botanist as Ustilago fcetida, on account of the intolerable odor which it exhales. It is one of the most common diseases to which wheat is subject. Scarcely a field is free from its attacks ; and in favorable cir- cumstances it spreads widely and proves very destructive. It confines its ravages entirely to the grain. Externally the in- fected ear presents no abnormal appearance. There is no black dust, no stunted growth or malformation by which the presence of the insidious foe may be recognized. On the con- trary, the infected ears continue growing, and appear even plumper and of a richer and darker green than the sound ones. The very stigmata of the flowers remain unaltered to the last. Stealthily and secretly the process of poisoning is accomplished ; and not in many cases till the harvest is reaped and the wheat ground for flour is the discovery made by the odor and color that the produce is unfit for human food. Under this external mask of health all fecundation is rendered impossible ; there is no development of the parts of fructification ; no embryo whatever can be detected ; the whole interior of the seed when broken and bruised is found to be filled with a black fetid pow- der, which contains on chemical analysis an acrid oil, putrid, gluten, charcoal, phosphoric acid, phosphate of ammonia and magnesia, but no traces of starch, the essential ingredient in human food. Certain sections of society are blasted by a moral depravity which this " bunt " typifies. Externally, the persons affected appear to be as honorable and respectable as the best of the world. Sometimes, indeed, they appear to be the most Christian of the Christian. But there is no germ of moral goodness in them. Under the mask of social propriety there is moral blackness. The infection of their wickedness rapidly spreads all around them. Yet it is often neither seen 82 DICTIONARY OF nor suspected by the ordinary observer. But when the preacher of the gospel goes forth to " gather in his sheaves," the disap- pointing discovery is made that there is no moral harvest to be rejoiced over, but a disheartening spectacle of moral waste and worthlessness to be deplored. b. Desolation. — There are epochs in some men's lives when faith, hope, and happiness all vanish, and the human mind, driven into gloom, experiences the awful sense of desolation. This mournful mood of soul has its symbol in the " Desolate Sea." In the angle comprised between Humboldt's current and the warm artery which flows to meet it from the center of the Pacific, there exists a vast area, a liquid desert of sinister aspect, desolate and barren, where nothing lives or moves, and which seems stricken with an eternal curse. " The motionless sea," says Felix Julien, " seems here deserted and abandoned. No whale ever furrows its waves ; no halcyon or petrel ever skims its surface. All the logs of ships and all the narratives of voyagers agree in representing in the same dreary colors the picture exhibited so efificaciously by this desolate sea. When the mariner has doubled Cape Horn, he is surrounded and pur- sued for several weeks by clouds of birds very common in the austral regions. The booby, the petrel, the albatross, the sea- swallow escort his vessel, wheel around it, and follow unfatigued in its rapid track. But as soon as we approach the Desolate Sea all things quit us, disappear, and change. We no longer descry the halcyon, no longer hear the hoarse voice of the sea- gull. The atmosphere is without sound, the waves of the ocean are dumb, nothing animates the blank horizon. The whole universe seems deprived of life, and it is under the impression of this indescribable sentiment of melancholy that man finds himself alone in the presence of God and the immensity!" MY. Desolation, A Type of. — Betweeli Humboldt's current and the great equatorial flow there is an area marked as the " deso- late region." It was observed that this part of the ocean was rarely visited by the whale, either sperm or right. Why it did SCIENTIFIC ILLUSTRATIONS. 83 not appear, but observations asserted the fact. Formerly this part of the ocean was seldom whitened by the sails of a ship, or enlivened by the presence of man. Neither the industrial pursuits of the sea nor the highways of commerce called him into it. Now and then a roving cruiser or an enterprising whaleman passed that way ; but to all else it was an unfre- quented part of the ocean, and so remained until the gold-fields of Australia and the guano islands of Peru made it a thorough- fare. All vessels bound from Australia to South America now pass through it, and in the journals of some of them it is de- scribed as a region almost void of the signs of life in both sea and air. In the South Pacific Ocean especially, where there is such a wide expanse of water, sea-birds often exhibit a com- panionship with a vessel, and will follow and keep company with it through storm and calm for weeks together. Even those kinds as the albatross and Cape pigeon, that delight in the stormy regions of Cape Horn and in the inhospitable cli- mates of the Antarctic regions, not unfrequently accompany ves- sels into the perpetual summer of the tropics. The sea-birds that join the ship as she clears Australia will, it is said, follow her to this region, and then disappear. Even the chirp of the stormy petrel ceases to be heard here, and the sea itself is said to be singularly barren " of moving creatures that have life." This is a type of desolation. It represents that portion of the life of an unhappy man which by age or circumstances is de- tached from society, and remains in desolation. Now and then pilgrims, like ships of passage, may cross the man's path, but his own sense of desolation remains the same. No cheerful thoughts ever flit with birdlike beauty across the horizon of his mind ; and the depths of his soul are solitary with sorrow. T. Despicable, The, the Destructive. — There is nothing noble in the power to destroy, though soldiers seem to think so. The most despicable creatures are always the most capable as in- struments of destruction. The larvae of an insect or fly, no larger than a grain of rice, silently, and in one season, destroy 84 DICTIONARY OF some thousand acres of pine-trees, many of them from two to three feet in diameter, and a hundred and fifty feet high! Whoever passes along the highroad from Georgetown to Charleston in South Carolina, about twenty miles from the former place, can have striking and melancholy proofs of the fact. In some places the whole woods, as far as you can see around you, are dead, stripped of the bark, their wintry-look- ing arms and bare trunks bleaching in the sun, and tumbling in ruins before every blast, presenting a frightful picture of desola- tion. This work of destruction would take any of the creatures, which we call the noble ones of creation, an immense time to accomplish. They could not at all compete with these despi- cable insects in this work of destroying the growth of years. An armed banditti in a few days can destroy pictures, statues, rnonuments, palaces, and temples, which are the result of the wisdom and work of a thousand years. One breath of pesti- lence in the breeze can kill a population more rapidly than all the armies of Europe. There is no difficulty about destruction, and despicable instrumentalities are always its agents. But the power to create or restore, do you ever find that in association with the despicable or contemptible? in. Despicable Conquerors. — Military brag has thrown a false halo around the word "conqueror." The fact is that even des- picable insects may be conquerors. In Africa there are flies which are the actual lords of certain extensive districts, ruling with so absolute a sway that not only man and his cattle are fain to submit to them, but even the most gigantic animals, the elephants and rhinoceroses, cannot stand before them. There is the zimb of Abyssinia, the very sound of whose dreaded hum sends the herds from their pastures, and makes them run wildly about till they drop with fatigue, fright, and hunger. There is no resource for the pastoral inhabitants but instantly to vacate the country, and retire with their herds to their nearest sands, where they will not be molested. This they would do though they knew that hostile bands of robbers were waylaying them. Such is the terror of a fly. When the British army hunts the SCIENTIFIC ILLUSTRATIONS. 85 Zulus, the Abyssinians, the Afghans, the Egyptians, or other helpless people, immense honor is always given to its deeds. They are covered with a blaze of glory. To drive away a mass of human creatures in terror is a performance which the lovers of militarism deem to be exceedingly grand. Let them then do honor to the transcendent zimb! Without the aid of even a drum, he makes a noise before which men and animals retreat. He can depopulate and annex a country by the fright which he can inspire. With chaplains and generals, and all the paraphernalia of costly war contrivances, blessed by the bishops and prayed over by civilized aggressors, the British army is still unable to do the work of cruelty much better than the zimb. bt. Despotism, A Weak Point in Though the Hon pos- sesses colossal strength, it is wanting in confidence in itself. Indeed its distrust is excessive. It frequently happens that, against its inclinations, it lea\'es a prey which it deems to have been too easily obtained, suspecting it to be a bait. Frequently, owing to this, man and animal who have been its defenseless prey on the ground have been abandoned by the brute, and have thus miraculously escaped what seemed certain death. :^ Other despots resemble this one in that they have the same weak point of character, suspiciousness. If they never faltered in self-behef they would often be able to crush out human lib- erties with the force of their violence. But our sultans, czars, emperors, kings, and other tyrants are apt to tremble with sus- picion at their own doings. From distrustfulness springs \-acil- lation of policy ; and during the despot's doubtings Liberty saves herself from mutilation. m. Destroyer without Sense of Sliame, A. — The horror of the desert does not lie only in its aridity, in its vacuity — this vacuity is not absolute ; in default of life, death peoples its soli- tudes. The glens or gorges frequented by the caravans are lined with stones, symmetrically disposed at certain intervals. These stones mark the places where rest the remains of the hapless pilgrims who have attempted to cross the wilderness, 86 DICTIONARY OF and perished in the attempt. Round and about each rugged tomb lie the skeletons of animals which none have troubled themselves to bury in the sand. Frequently you may see, on the sandy vifastes of Africa or the desolate plains of Asia and the New World, these carcasses laid out in two interminable rows, indicating the gloomy track which should be followed by the traveler, and never failing to remind him of the tribute death levies upon mankind in these accursed regions. Thus does the desert show itself more relentless than even the hungry ocean, which at least devours its victims whole, and affronts the eye with no traces of its murders. But the Moloch of the desert has no shame ; it cynically exposes the hideous remains of those whom it has killed ; it strews the earth with their bones ; it has its museums of skeletons, or rather of preserved animals. d. ^ Destroyer's Art and Force, A One of the most danger- ous denizens of the marshy plains of equatorial America is the gigantic boa-constrictor, a frightful reptile often attaining to the length of thirty-six to forty-five feet. In the morning and even- ing he places himself in ambush on the border of some lake or watercourse to surprise the quadrupeds which flock thither to quench their thirst. By means of his prehensile tail he sus- pends himself to a tree on the shore, and patiently awaits the coming prey. When an animal passes within his reach, he swiftly seizes it, enfolds it in his spiral coils, crushes it against the tree which serves for his point d'appui, compresses its bleed- ing mass into a convenient form, covers it with a glutinous saliva, and swallows it. In this fashion he will de^■our a stag or even an ox entire, nor does he fear to attack the puma and jaguar. d. / Destroyers, Destruction of. — The green-and-black cater- pillar of the white cabbage butterfly devastates our cabbage beds, makes sieves of the leaves, and is disagreeably tenacious of its rights of possession. Pest as it is to the gardeners and cooks, it would be a hundredfold worse but for the exertions of a fly so small as hardly to be noticed but by its effects. Small SCrENTTFIC ILLUSTRATIONS. 87 though it be, one such insect can compass the destruction of many a caterpillar, though not one-thousandth part of the size of a single victim. While the caterpillar is feeding, the ich- neumon-fly, as it is called, settles upon its back, pierces its skin with a little drill wherewith it is furnished, and in the wound deposits an egg. This process is repeated until the ichneumon's work is done. As each wound is made the caterpillar seems to wince, but shows no further sense of uneasiness and proceeds with its eating as usual. But its food serves very little for its own nourishment, because the ichneumon's eggs are speedily hatched into ichneumon-grubs, and consume the fatty portions of the caterpillar as fast ^ as it is formed. In process of time the caterpillar ought to take the chrysalis shape, and for that purpose leaves its food and seeks a convenient spot for its change. That change never comes, for the ichneumons have been growing as fast as the caterpillar, with whose development they keep pace. And no sooner has their victim ceased to feed, than they simultaneously eat their way out of the doomed creature, and immediately spin for themselves a number of bright yellow cocoons, among which the dying caterpillar is hopelessly fixed. Sometimes it has sufficient strength to escape, but it never survives. co. Destroyers, Detection of. — When the caterpillars of the buif-tip moth have increased to a tolerably large size, they dis- band their forces, and each individual proceeds on its own course of destruction. Were it not for the colors they assume, these creatures would do great damage ; but the ground being yellow and the stripes black, the caterpillars are so conspicuous that sharp-sighted birds soon find them out, and having dis- covered a colony, hold revelry thereon, and exterminate the band. CO. Destruction and Renovation : Principles of Nature. — The uniformitarian, who would explain every natural event in the eariiest periods by reference to the existing conditions of being, is stopped at the foundation-stones of the great natural edifice, each story of which has been inhabited by different 88 DICTIONARY OF creatures. Nature herself, in short, speaks to him through her ancient monuments, and tells him that, though she has worked during all ages on the same general principles of destruction and renovation of the surface, there were formerly distributions of land vastly different in outline from those which now pre- vail. The primeval sediments were penetrated by outbursts of great volumes of igneous matter from the interior, the violence of which is made manifest by many clear evidences. Fractures in the crust of the earth caused by earthquakes that suddenly removed masses to positions far above or beneath their previ- ous levels were necessarily productive of such powerful transla- tions of water as abraded and destroyed solid materials, and spread them out over continents, or altogether swept them away by operations infinitely surpassing any changes of which the historical era affords examples. We could cite the works of many eminent writers for numerous evidences of the grander intensity of causation in former epochs, by which gigantic strati- fied masses were sometimes inverted, or so wrenched, twisted, and broken as to pass under the very rocks out of which they were formed. The traveler amid the Alps and other mountain- chains will there see clear and unmistakable signs of such former catastrophes, each of which resulted from fractures utterly inex- plicable by reference to any of those puny oscillations of the earth which can be appealed to during historical times. si. Destruction, Elements that Wait for Perhaps the most distinctive feature of the prairies or savannas from the pampas and llanos is that the dryness in the former is never sufficiently severe to destroy vegetation, as is the case in the latter. But the herbs and grasses often grow so dry in summer that the most trivial accident, such as a lighted match flung carelessly away, or the ashes dropped from a hunter's pipe, will kindle the most awful conflagrations, and the flames will spread de- vouringly over leagues of open ground, consuming trees and shrubs, and burning to death the cattle or wild animals which haply fall within their range. With the crackHng, hissing, seeth- SCIENTIFIC ILLUSTRATIONS. 89 ing noises of the fire mingle the groans of the perishing beasts, while huge clouds of smoke roll before the wind like the bil- lows of a wind-swept ocean, and live tongues of flame ever and anon light up the terrible scene with lurid splendor. These " prairie-fires " are sometimes kindled in revenge by the In- dians, and occasionally the settlers resort to this dangerous but summary method of clearing the encumbered ground. d. Development Dependent on Proper Conditions, Proper. — Plants, as well as animals, nurtured and grown in perfect darkness, never acquire their natural color. The former be- come white instead of green. This fact is observed in the etio- lation or blanching, as it is termed, of certain kinds of vegeta- bles, such as celery, sea-kale, endive, etc. Their leaves, deprived of the sun's rays, do not attain their normal growth or form, neither is the natural odor of such plants fully developed. Pro- fessor Robinson, descending into a coal-mine, accidentally met with a plant growing luxuriantly. Its form and qualities were new to him. The sod on which it grew was removed, potted, and carefully attended to in his garden. The etiolated plant languished and died, but the roots speedily threw out vigorous shoots which, from the form of the leaves and their peculiar odor, he readily recognized as tansy. He repeated similar ex- periments upon other plants, viz., lovage, caraway, and mint, with analogous results. The biography of mankind affords innumer- able examples illustrative of this same principle, that the proper development of every kind of life is dependent on proper con- ditions. It is not thereby necessarily implied that man is the slave of his circumstances, because, unlike the lower creation, he possesses within certain limits power to bring himself under the influence of the conditions favorable to the proper develop- ment of his intellect and character. Certain, however, it is that where opportunities for the exercise of that power have been wanting, and where the man has not been brought under suit- able conditions, his faculties have dwindled into insignificance, or become abnormally distorted in their growth. A stunted 90 DICTIONARY OF moral and physical manhood is inevitably the result of certain conditions of existence which can easily be named : and the converse is also true. il. Directness of Course. — The lemmings are natives of the mountains of Lapland, where they feed on mosses and lichens. At very irregular dates the lemmings migrate in immense num- bers, and make their way towa:rd the south in crowded columns. It seems as if they were drawn on by some irresistible power to- ward a certain fixed point, so straight is the character of their march. They never go round any obstacle, except when it is absolutely impossible to surmount it, and then, as soon as the impediment is past, they again take their former direction. If a large rick of hay happens to stand in their path, they bore right into it, and make a thoroughfare through it. If a boat is moored in a river, and thus crosses their direct road, they will climb over it and take to swimming again on the other side of it. They are not only determined to pursue directness of pur- pose, but also directness of course^^l It is an old proverb that "sometimes the longest way round is the shortest way home." They are never influenced by such a consideration. There are human minds which, in this peculiarity, resemble the lemmings. They will have not only a direct purpose, but also a straight road to it. No ingenuity is ever called into play to avoid an unnecessary difficulty. A blunt honesty requires them to move in one line only. To them the line of march seems of as much importance as their destination. m. Disappointment, Tlie Influence of After many disap- pointments' we cannot do our work well. We are disheartened. The poetry of life has departed. With the loss of our hopes was the loss of our love. The bird whose nest has been robbed several times builds up her last in a \-ery slovenly manner. And we act much as that bird does, if, after repeated failures, we again attempt our disappointing task at all. a. Disappointment, Excusable. — There is plenty of disap- pointment which is not excusable. People do things which their own common sense, if they would use it, could tell them SCrEKTIFIC ILLUSl^RATIONS. 91 must end only in one way. Yet, when the inevitable misfor- tune comes, they call it disappointment. On the other hand, there is an excusable disappointment, as when one trusts to a fixed law of Nature and finds it has suddenly varied. Take, for instance, the case of people who, having always found rain- water to be clear and clean, are disappointed to find a shower of a wholly different character. This experience happened in South America to the inhabitants of one of the Argentine prov- inces — the city of San Juan. They once had black rain ! For many hours during a day and a night this black disappoint- ment poured down upon them. Clothes left out to dry were saturated with black water ; and all the vessels which should have gathered pure water were filled instead with black water. No one could have been prepared for this. No one could have guarded against it. People expect rain-water to be clear, just as they expect a good bank to pay its depositors. i. o. Discontented Character, The. — There are people who are constitutionally discontented. Nothing gives them satisfaction. They are like the hermit-crabs, and may well be designated " crabbed." We see that the animal and the shell are mostly well suited to each other ; but it is a remarkable fact that, how- ever well the shell and the crab may seem to be suited to each other, the crab always thinks that a shell belonging to another crab would make a better house. Consequently they will wage direful battles over a few empty shells, although neither of the shells would make so commodious a habitation as that which was already occupied. f. Discretion is the Better Part of Valor In the forests of Tartary and South America, says Lord Brougham, where the wild horse is gregarious, there are herds of five or six hun- dred, which, being ill prepared for fighting, or indeed for any sort of resistance, and knowing that their safety is in flight, when they sleep appoint one in rotation who acts as sentinel while the rest are asleep. If a man approaches, the sentinel walks toward him, as if to reconnoiter and see whether he may be deterred from coming near ; if the man continues, he 92 DICTIONARY OF neighs aloud and in a peculiar tone, which rolises the herd, and all gallop away, the sentinel bringing up the rear.- Nothing can be more judicious or rational than this arrangement, simple as it is. R. Disseminators, Unconscious. — One of the most extraordi- nary of microscopic plants is the Achlya prolifira, whose soft silky threads may sometimes be seen adhering to the surface of goldfishes, and covering them, as it were, with a whitish slime. This appearance is generally looked upon as a species of decay or consumption in the animal itself, and not as an external clothing of parasitic plants. It is, however, a true vegetable growth, each individual consisting of a single fila- ment with a minute pear-shaped ball on the top containing numerous grains, which are the seeds or embryos of futiue plants. The unconscious fish is the means of their dissemina- tion, and they may be caiTied by him unwittingly into places where no such plants ever grew before.-; Birds unknowingly often carry seeds to great distances ; so do the winds. But the methods by which Nature uses unconscious agents for the dis- semination of seeds are not more remarkable than the processes by which ideas get scattered throughout the human race. A falling apple carries with it a suggestion respecting the law of gravitation. The failure of a quadruped caiTies with it notions of better mechanical locomotion. A tea-kettle sings a song which tells of the apphcation of steam. Balaam's ass even has a commimication to make. In a thousand ways all sorts of things and events are used as the unconscious agents for the dissemination of ideas. There is a mighty mass of things for- ever moving about the world, carrying with them associations which, on coming in contact with the mind of man, develop into germs of thought. ch. Dissimilar Causes may Produce Like Effects The natures of some people seem to be utterly stupefied and dead- ened by prosperity. Others are chilled into torpor and petri- faction by adversity. These different processes work out the same result — inactivity. So in the tropics the intensely hot SCIENTIFIC ILLUSTRATIONS. 93 season causes the crocodile and other amphibious animals to conceal themselves in the mud and he apparently dead ; while in the cold regions the severities of the winter throw other ani- mals into a state of hybernation. vi. Dissimilar Effects of the Same Cause, The Consider the totally different effects which the same thing has on differ- ent people. An act simple in itself will rouse the joys of one and the rage of another. A substance which is food to one man is poison to another. The same medicine which effects a cure in one case will in a similar case in another man aggravate the malady and enhance his sufferings. Look again at the ef- fects of the tempest on creation. A large number of the exis- tences on the globe are terrified. But the seals love above all the tempest, the roaring of the waves, the whistling of the wind, the mighty voice of the thunder, and the vivid flashings of the lightning. They delight to see, rolling along in a somber sky, the great black clouds which predict torrents of rain. Then it is that they leave the sea in crowds and come and play about on the shore, in the midst of the fury of the elements. They are at home in the tempests. It is in these crises of Nature that they give full play to all their faculties, and to all the activity of which they are capable. When the weather is fine and the rest of creation is full of enjoyment they fall asleep, and resign themselvesJflrzily^o the dolce far niente. m. Distance, The Delusive Effects of. — Not unfrequently we discover that the distance between a friend and ourselves has caused us to take an entirely wrong view of him and his proceedings. We contemplate him through a medium which is illusory. When we approach near, however, we see the reality to be the reverse of what it appeared. Now in like manner a natural object of the landscape, when seen from a distance, may appear to the eye to be in a state exactly the reverse of what it really is. Who does not acknowledge instantaneously the magical truth of Wordsworth's saying of a cataract, seen from a station two miles off,. that it was " frozen by distance " ? It looks all ice. In all Nature, however, there is not an object 94 DICTIONARY OF SO essentially at war with the stiffening of a frost as the head- long and desperate life of a cataract, and yet notoriously the effect of distance is to lock up this frenzy of motion into the most petrific column of stillness. Such is the illusory effect of distance. de q. Distance, The Illusions of — The three bright stars which constitute the girdle or bands of Orion never change their form ; they preserve the same relative position 'to each other, and to the rest of the constellation, from year to year and age to age. And yet in the profound rest of these stars there is a ceaseless motion, in their apparent stability and everlasting endurance there is constant change. In vast courses with inconceivable velocities, they are whirling round invisible centers, and ever shifting their positions in space, and ever passing into new col- locations. They appear to us motionless and changeless be- cause of our great distance from them. b. Distinctiveness. — Every blade of grass, leaf, flower, tree, or animal ha,s distinctiveness. No two things of the same sort can be found exactly alike. Mr. Dixon remarks that even " to every hen belongs an individual peculiarity in the form, color, and size of her egg, which never changes during her lifetime, so long as she remains in healthfland which is as well known to those who are in the habit of taking her produce as the hand- writing of their nearest acquaintance." dx. . va. Diversity of Form but Unity of Benefit Diversity of climate circumscribes within limits more or less narrow many of the most useful of our food-producing plants ; but this un- avoidable evil has sometimes been lessened or obviated in a way which affords another instance of the kind forethought of our Father. One of the most valuable elements of vegetable diet is sugar, and Nature has taken care that many articles in com- mon use shall contain a fair proportion of it. At the same time there are certain plants in which it e.xists so abundantly that we are accustomed to resort to them for our large supplies. Of these the chief is the well-known " cane." But the sugar-cane flourishes only in the tropics and adjacent regions ; and there- SCIENTIFIC ILLVSTRATWXS. 95 fore all sugar from this source, consumed in extratropical countries, must be brought to them by commerce. Many a wide district, however, lying far in the interior of continents, is unfavorably situated for thus receiving its supplies ; and it might either have been deprived of this nutriment altogether, or at least have been inadequately provided with it, had not Providence, with kind intent, created other sugar-producing plants constitutionally suited to different climates, for the pur- pose of distributing the gift more generally over the world. Thus we find that, from the tropical " cane " region to the Mediterranean, the supply of sugar is maintained by several plants, among which may be mentioned the date-palm and the fig. Beyond this, in climates corresponding to Southern Europe, there are the sorghum and maize, from which much sugar is now manufactured in France and America. Farther to the north, the beet-root in the field and the maple in the forest ex- tend the series of sugar-producing plants almost to the verge of the Arctic circle. Farinaceous food is tropically represented by the rice-plant in great abundance. Proceeding northward, rice is associated with the maize or Indian corn ; that is suc- ceeded by wheat ; and, lastly, we have oats and barley flourish- ing almost up to the North Cape. The same representative system is observed in regard to many other important vegetable principles. In this manner, then, the difficulties interposed by climate to the wide distribution over the globe of some of the most valuable products of the vegetable kingdom have been entirely surmounted. According to the laws regulating the vegetable kingdom, it was impossible for the same useful plants to .flourish everywhere ; but Providence created duplicates, as it were, to yield abundantly the same products, and adapted them by their constitution to take up their position in the dif- ferent climatic belts of the world, in order that no extensive region should be without them. There is an endless diversity of form but unity of benefit. The form is not of any impor- tance, but the food, of course, is essential. If we turn to the human world we shall see the same principle illustrated in poli- 96 DICTIONARY OF tics, in religion, and in institutions. It is necessary that men should have some government, but the form of it must depend upon local conditions, and, therefore, will be repubhcan, mon- archical, or tribal, according to exigencies. They must have religion, but its forms are protean, and grow according to the necessities and aspirations of nations. They must have dress and speech, but whether broadcloth or linen, whether English or Arabic, will depend upon zone. In an infinite diversity of forms we obtain all our important blessings. be. Diversity Concealed by Resemblance The resemblance between two objects may be so striking as to blind our eyes to the diversity which, on inspection, may be found to be more striking than the resemblance. For instance, if we compare the buffalo with our common cow, no two animals can be more nearly alike either in their form or their nature ; both equally submissive to the yoke, both often living under the same roof, and employed in the same domestic services ; the make and the turn of their bodies so much alike that it requires a close atten- tion to distinguish them, and yet, after all this, no two animals can be more distinct/tor seem to have stronger antipathies to each other. / , a. " Doldrums " of Life, The. — Seafaring people have, as if by common consent, divided the ocean off into regions, and characterized them according to the winds ; e.g., there are the " trade-wind regions," the " variables," the " horse-latitudes," the " doldrums," etc. The " equatorial doldrums," besides being a region of calms and baffling winds, is a region noted for its rains and clouds, which make it one of the most oppressi\'e and disagreeable places at sea. The emigrant ships from Europe for Australia have to cross it. They are often baffled in it for two or three weeks ; then the children and the passengers who are of delicate health suffer most. It is a frightful graveyard on the wayside to that golden land. In crossing the equato- rial doldrums the mariner has passed a ring of clouds that en- circles the earth. And do not these doldrums illustrate a class SCIENTIFIC ILLUSTRATIONS. 97 of influences to which we are all subject? Are we not all cer- tain in our journey to have days of deep melancholy, when all is dismal, when our hopes are baffled, when we make no pro- gress and yet have no calm ? Then, indeed, we suffer ; and depression clouds the sky of all its light. Take courage, droop- ing heart, and remember that thou too hast a golden land in view! T. Drawbacks, Every Condition has its. — The man-of-war or frigate-bird is virtually nothing more than wings, scarcely any body — barely as large as that of the domestic cock — while his prodigious pinions are fifteen feet in span. The great problem of flight is solved and overpassed, for the power of flight seems useless. Such a bird, naturally sustained by such supports, need but allow himself to be borne along. The storm bursts ; he mounts to lofty heights where he finds tranquillity. When he chooses to oar his way seriously, all distance vanishes : he break- fasts at the Senegal, he dines in America. He may continue his progress through the night indefinitely, certain of reposing him- self. Upon what? On his huge motionless wing, which takes upon itself all the weariness of the voyage ; or on the wind, his slave, which eagerly hastens to cradle him. This strange being is gifted with the proud prerogative of fearing nothing in this world. Little, but strong and intrepid, he braves all the tyrants of the air. He can despise, if need be, the pygarg and the condor ; those huge, unwieldy creatures will with great difficulty have put themselves in motion when he shall have already achieved a distance of ten leagues. From all this it might be concluded that this bird was a type of freedom worthy of envy, and that its condition was nearly perfect. But, as often hap- pens in other cases which we consider exempt from disadvan- tages, a little more information suggests a different judgment. Every condition of life — whether that of statesmen, authors, travelers, or birds, beasts, and fishes — has its drawbacks. It is so with this frigate-bird. If we examine it a Httle closer we shall find to our astonishment that, when contemplated from 98 DICTIONARY OF near at hand, this bird, the first of the winged kingdom, has nothing of the serenitjr which a free hfe promises. His eye is cruelly hard, severe, mobile, unquiet. His vexed attitude is that of some unhappy sentinel doomed, under pain of death, to keep watch over the infinity of ocean. On looking at him closely you perceive that he has no feet ; or, at all events, feet which, being palmate and exceedingly short, can neither walk nor perch. With a formidable beak, he has not the talons or strength of a true eagle of the sea. He strikes and slays ; can he seize? Thus, then, this being, so well armed and winged, leads but a trembling and precarious life. Superior to all others in power of flight and vision as in daring, his life is uncertain, and he would die of hunger had he not the industry to create for himself a purveyor whom he cheats of his food. His ignoble resource is to attack a dull and timorous bird, the noddy, fa- mous as a fisher. The frigate-bird, which is of no larger dimen- sions, pursues him, strikes him on the neck with his beak, and compels him to yield up his prey. All this takes place in the air ; before the fish can fall he catches it on its passage. Such is the character, and such are the drawbacks in the condition, of the beautiful bird which at first sight appeared to be a noble type of a grand existence. The biography of many a man whom we admire suggests numerous reflections which are simi- lar to those which the story of this bird life furnishes. Dreams and Time's Silver-Thaw, Boyhood's. — Noth- ing produced by the magic touch of winter can excel a phe- nomenon which may often be seen in the woods of some American countries, where it is familiarly called silver-thaw. It is caused by rain descending when the stratum of air nearest the earth is below 32O, and consequendy freezing the instant it touches any object. The ice accumulates with every drop of rain, until a tran.sparent, glassy coating is formed on the shrubs and trees ; the effect is magical, and reminds one of fairy scenes described in Oriental fables. Every little twig, every branch, every leaf, every blade of grass, is enshrined in crystal ; the whole forest is composed of sparkling, transparent SCIENTIFIC ILLUSTRATIONS. 99 glass, even to the minute leaves of the pines and firs. The sun shines out. What a glitter of light! How the beams, broken, as it were, into ten thousand fragments, sparkle and dance as they are reflected from the trees! Yet it is as fragile as beau- tiful. A slight shock from a rude hand is sufficient to destroy it. The air is filled with a descending shower of the gUttering fragments, and the spell is broken at once. It is a representa- tion of the visions of boyhood vanishing in Time's silver-thaw. At first they are full of pure splendors, all loveliness, all allure- ments, all graces. Time touches them with harsh hand, and they vanish from our gaze like the beautiful ice phenomenon, leaving only a gorgeous memory behind. ro. Drones, Nature's Sentence upon. — It will be profitable to idle people to observe the arrangement whereby Nature con- demns the drones to death in the bee community. No sooner is the business of swarming ended, and the worker-bees satisfied there will be no lack of fertile queens, when issues the terrible edict for the massacre of the drones. j'Toor fellows! It is to be hoped they comfort themselves with the reflection that theiil fate is an everlasting homily, presented by Nature in dogmatical but most effective fashion, of the uselessness of all who labor not for their living. If one must die for the good of one's kind,J by all means let it be as a martyrj Poorlellowsf how they dart in and out, and up and down, the hive, in the vain hope of escape ! The workers are inexorable. Huber tells us the latter plant their stings so deeply — for the most part between the segments of the abdomen — that they cannot extricate them- selves without turning as upon a pivot. The cruelty apparent in the fierceness of the attack is perhaps only kindness, for the wound is immediately fatal ; the drones expand their wings and die. \ B. w. Dull Natures are Splendid Pain=Bearers. — In reptiles and batrachians the brain is small, a peculiarity which explains their slight intelligence and the almost entire impossibility of teaching them anything. They can, it is true, be tamed ; but although they seem to know individuals, they do not seem to 100 DICTIONARY OF be susceptible of affection; the slight compass of their brain renders them very insensible. This insensibility to pain enables them to support mutilations which would prove immediately fatal to most other animals. For instance, the common hzard frequently breaks its tail in its abrupt movements. But this curtailment does not seem to affect him ; he waits patiently for the return of the organ, which complaisant Nature renews as often as it becomes necessary. A tortoise will continue to live and walk for six months after it is deprived of its brain^ It is obvious, therefore, that these kinds of creatures can endure very splendidly that which, in the ordinary way, would be called pain, not because they have fortitude, but because they have insensibility. They remind us in this of many men and women who get great credit for the manner in which they endure the ills of life. Some are praised for their Christianity, others for their philosophy, others for their magnanimity, when investiga- tion will often reveal the fact that the real reason of their com- posure is to be found in their low organization. When a moral hero bears pain with bravery he does so at an immense effort, because, since he has capacity for vast feeling, so also has he capacity for vast suffering. When a dull and stupid man en- dures suffering with resignation it is because his nature is not endowed with high sensibility. Extremes meet, and he often takes his stand by the hero and is applauded for virtues which he does not possess. A tortoise-brained man will actualty en- joy himself under calamities which would crush a poet. re. Earth, The Transitional Nature of the. — There is in the delta of the Indus a singular region, called the Runn of Cutch, which extends over an area of 7000 square miles, which is neither land nor sea, but is under water during the monsoons, and in the dry season is incrusted here and there with salt about an inch thick, the result of evaporation. Dry land has been largely increased here during the present century by subsidence of the waters and upheavals by earthquakes. " That successive layers of salt may have been thrown down one upon the other on many thousand square miles in such a region is undeniable," SCIENTIFIC ILLUSTRATIONS. loi says Lyell. " The supply of brine from the ocean is as inex- haustible as the supply of heat from the sun^ The only as- sumption required to enable us to explain the great thickness of salt in such an area is the continuance for an indefinite period of a subsiding movement, the country preserving all the time a general approach to horizontality." The crust of the globe is constantly changing in some form or other in all places. It is true in a material sense that the fashion of the world passeth away. w. Economy that is Loathsome. — Like all the reptiles, the toad changes its skin, but the cast envelope is never found, although those of the serpents are common enough. The rea- son why it is not found is this : the toad is an economical ani- mal, and does not choose that so much substance should be wasted. So after the skin has been entirely thrown off, the toad takes its old coat in its two fore paws, and dexterously rolls it, and pats it, and twists it, until the coat has been formed into a ball. It is then taken between the paws, pushed into the mouth, and swallowed at a gulp like a big pill. co. Education, The Virtue and Limits of. — Education is the development of a man's capacities. It gives nothing ; it only brings out what there may be to bring out. The child contains in himself the germ of all he will ever be. Hazlitt contends in his essay " On Personal Character " that no one ever changes his character from the time he is two hours old ; that under all circumstances the internal original bias remains the same al- ways, true to itself to the very last. His development is anal- ogous to that of humbler creatures. The material which is capable of expansion is settled once for all. That which is not settled is the mode of its development — the education of it. In this men are like insects. All insects, whatever transmuta- tions they seem to undergo, are yet brought forth with those very limbs, parts, and wings which they afterward seem to ac- quire. In the most helpless caterpillar there are still to be seen the rudiments of that beautiful plumage which it afterward ex- pands when a butterfly ; and though many new parts seem un- 102 DICTIONARY OF folded to the view, the animal acquires none but such as it from the beginning possessed. The grasshopper, though seem- ingly without wings, is in reahty from the first possessed of those instruments, and only waits for sufficient force to break the bonds that hold them folded up, and to give them their full expansion. an. Effects, The Dissimilar, of an Easy and Anxious Ex= istence. — Those animals whose food is always within their reach are in general indolent and peaceful, and possess but little men- tal activity ; and such are the herbivores, with few exceptions. But, on the other hand, the carnivores are extremely prompt and lively ; their bones are more compact, their muscles stronger, their faculties keener, and their sense of perception greater ; and hence their sensations are more intense and more easily excited, their actions quick and resolute, hesitating at neither plunder nor destruction. Those men whose worldly fortune has been made for them, and who are not challenged to think about the every-day wants of life, are often phlegmatic, stupid, dense. ) Those other men, who have to produce by their own mental and physical energy everything needful for their own existence, what a different sort are they! Of them come our legislators, poets, artists, inventors, the mental and moral aristocracy of the world. PA. Effort is not Lost, The Smallest The smallest effort which is honestly put forth for the public good must have an influence. It is never lost. It works marvelously though we trace it not. Is any one incredulous ? Let him observe the effect on old ocean of one single act on the part of a tiny in- habitant, and he will be astonished at the influence which a unit may exert. Let us suppose the ocean to be perfectly at rest ; that throughout it is in a state of complete equilibrium ; that, with the exception of those tenants of the deep which have the power of extracting from it the solid matter held in solution, there is no agent in Nature capable of disturbing that equilibrium, and that all these fish, etc., have suspended their secretions, in order that this state of a perfect aqueous equilibrium and repose SCIENTIFIC ILLUSTRATIONS. 103 throughout the sea might be attained. In this state of things — the waters of the sea being in perfect equihbrium — a single mollusk or coralline, we will suppose, commences his secretions, and abstracts from the sea-water solid matter for his cell. In that act this animal has destroyed the equilibrium of the whole ocean, for the specific gravity of that portion of water from which this solid matter has been abstracted is altered. Having lost a portion of its solid contents, it has become specifically lighter than it was before ; it must, therefore, give place to the pressure which the heavier water exerts to push it aside and to occupy its place, and it must consequently travel about and mingle with the waters of the other parts of the ocean until its proportion of sohd matter is returned to it, and until it attains the exact degree of specific gravity due to sea-water generally. T. Eloquence, A Condition of. — Proper burning depends upon proper conditions. All bodies which burn in the air bum with increased brilliancy in oxygen gas ; and many substances, such as iron, which do not readily burn in the air may be made to do so in oxygen. A red-hot chip of wood, or a taper with glowing wick, is suddenly rekindled and bursts into flame when plunged into a jar of this gas. Sulphur, which in the air burns with a pale lambent flame, emits in oxygen a bright violet light; and, a small piece of phosphorus, when inflamed and placed in oxygen, burns with a dazzling light. It is therefore obvious that .successful burning depends upon a suitable atmo- sphere. We may say just the same of successful oratory — it depends upon suitable pervading influences. If the best orator in the world is placed in an uncongenial moral atmosphere he cannot glow with proper brightness. But if he be placed where his sympathies are fired by the enthusiasm of his audience, his eloquence is kindled and he shines with a glorious luster. It has been said paradoxically that " eloquence is in the audience." The fact is that the audience supplies the moral oxygen which enables the orator to display his brilliancy. e. c. Enemies, Power of Small. — Sometimes most gloomy fears 104 DICTIONARY OF are entertained for the noble oak and pine forests of Germany. It is stated that millions of fine trees have already fallen un- der the insidious attacks of a beetle, a species of extreme mi- nuteness, which lays its eggs in the bark, whence the larvae pen- etrate between the bark and the wood, and destroy the vital connection between these parts, interrupting the course of the descending sap, and inducing rapid decay and speedy death." In the north of France the pubhc promenades are almost every- where shaded by avenues of noble elms. In very many cases these trees are fast disappearing before the assaults of a similar foe. And the grand old elms of London parks and gardens are becoming so thinned that great alarm has been felt, and the resources of science employed for the checking of the mischief. Fifty thousand trees, chiefly oaks, have also been destroyed in the Bois de Vincennes, near Paris. In all these cases the minute but mighty agent has been some species or other of the genus Scolytus. This is an illustration of the singular power for mischief often possessed by small enemies whose capacity seems but is not despicable. ro. Enemies, The Power and Method of Small Very often the little cares of life break down the constitution which suc- cessfully dared great dangers and defied vast difficulties. Very often the little traitor has ruined the enterprise which authority could not crush. Very often man finds his worst enemies among the smallest creatures. Very often the greatest creatures, having braved even man, succumb to little enemies which ap- pear contemptible. Thus the whale, that giant of the sea, finds the narwhal a worse enemy than man. It may escape the lord of creation, his fleets and harpoons ; but these narwhals, as- sembling in a troop, advance in line of battle against the whale, attack it on all sides, bite it, harass it, fatigue it, force it to open its mouth, and then devour its tongue. The wounded whale, then losing a quantity of blood, is worn out and becomes the easy prey of white bears, dogfish, and like enemies whom it could before defy. The leviathan is vancjuished by insignifi- • cant fishes, j ! Little enemies look out for weak places. They SCIENTIFIC ILLUSTRATIONS. 105 always know the value of the tongue, and have brought down many a strong personage by a strategic method of attack hav- ing that for the object. m. Enemies, Our Own Peculiar. — Even different sorts of animals seem to have allotted to them their own peculiar ene- mies. One of the causes which render tlie center of Africa difficult to be explored is a fly not larger than the house-fly. The tsetse-fly is of brown color, with a few transverse yel- low stripes across the abdomen, and with wings longer than its body. It is not dangerous to man, to any wild animals, or to the pig, the mule, the ass, or the goat. But it stings mortally the ox, the horse, the sheep, and the dog, and renders the coun- tries of Central Africa uninhabitable for those valuable animals. It seems to possess very sharp sight. It darts from the top of a bush as quick as an arrow on the object it wishes to attack. This sucker of blood secretes in a gland, placed at the base of his trunk, so subtle a poison that three or four flies are sufficient to kill an ox. "^ Men all the world over are subject to some sort of moral tsetse-fly. The tormentor seems specially adapted for injury to the particular persons whom it attacks, and it passes over others. The tsetse wife, tsetse mother-in-law, tsetse inquisitor, are all creatures who have a mission to sting to death the various classes of victims which have been spe- cially allotted to them by Nature. The moral mules and moral pigs may escape their tsetse-fly. But the more highly organ- ized and the most useful specimens of humanity are as certain to be attacked by their tormentor on their journey through the " barren land " as are the valuable animals in the center of Africa. i. Enemy, No one is too Contemptible to have an Life is strangely beset with enemies. No man is too contemptible to have one. Even humble creatures like caterpillars have ene- mies. For example, the ichneumon-fly deposits its eggs upon caterpillars, boring holes in their skin with its pointed oviposi- tor, and inserting its eggs in the perforations. Minute as is the insect when compared to the caterpillar, bearing about the same io6 DICTIONARY OF relationship that a rabbit bears to an elephant, the legs are so long that they can include a considerable portion of the skin in their embrace, and so strong that they can retain their hold in spite of the contortions with which the poor caterpillar tries to rid itself of its persecutor. h. Enemy, The Unexpec^ 1 How often the enemy is found to be the person who appeared to be ignorant of even our exis- tence — one fully occupied with objects far away, and totally engrossed in nobler things. Now behold his emblem in yonder kite. Notice the bird. Its flight is singularly graceful and easy. The extended wings seem to have the power of supporting their owner in the air almost without the least exertion : it glides smoothly along without effort, now rising gently, now descend- ing, to use the words of Buffon, " as if sliding upon an inclined plane," now wheeling round in graceful circles, and all with scarcely a perceptible movement of the wings, but simply by the action of the rudderlike tail. It seems all occupied with the sky. During his graceful evolutions, however, the kite has his eyes steadily fixed upon the ground beneath him, with which he seems to have so little to do ; and the moment his prey makes its appearance in the shape of a mole, a mouse, a young rab- bit, or leveret, or any other small terrestrial animal, the long wings are closed in an instant, and the kite descends with aston- ishing velocity upon his surprised and unsuspecting quarry. T. B. Enjoyment, The Perils of. — Enjoyment is often attended with deadly peril. We set our heart on obtaining some sweet pleasure ; little resistance is ofifered, and we obtain our desire ; but the price is ruin. We are caught like the winged creature which seeks the sweets of the glaucous birthwort. The whole of the internal surface of the tubular flower of the glaucous birthwort [Arisiol glauca) is beset with minute strong spines pointing downward ; these present no impediment to the ani- mal which may seek for the sweet liquor lodged upon the nec- tarium at the base of the blossom, nor is there any obstruction provided for its return by means of valves or contractions, the SCIENTIFIC ILLUSTRATIONS. 107 tube remaining open ; but the creature cannot crawl up by rea- son of the inverted spines ; and to prevent its escape by flying up the tube, the flower makes an extraordinary curve, bending up hke a horn, so that any winged creature must be beaten back by striking against the roof of its neck as often as it at- tempts to mount, and falling back to the bulbous prison at the base of the flower, dies by confinement and starvation. j. Enthusiasm, The Deobstruent Power of Vapor of a high temperature is capable of dissolving sihca, and Mr. Dar- win alludes to an instance in Terceira (one of the Azores), where steam, issuing from fissures in the trachytic rock, gradually softens and decomposes the crystalline mass till the whole is reduced to a white chalky clay, with which the inhabitants whitewash their houses. In like manner the high enthusiasm of a people when it issues forth against petrified constitutional monstrosities possesses a power to melt them away. No time- hardened opposition of colossal forces can resist its opera- tions. Its warmth will reduce them, and from the residuum will obtain properties for the general benefit. Though the enthu- siasm of the people is sometimes designated " mere vapor," we can see that " vapor " possesses a power to melt and to re- move. AD. Error, The Instinct and Operations of. — Moral error has in it the instinct of mischief. It is bred of mahce, works mali- ciously, and rears its progeny often on the unsuspecting and the unoffending. This is the law of its existence, and all its family follow it. In the history of its birth, its insidiousness, and its cowardice, it resembles the flies of the ichneumon tribe. All the flies of the ichneumon tribe are produced in the same manner, and owe their birth to the destruction of some other insect, within whose body they have been deposited, and upon whose vitals they have preyed till they came to maturity. As moral error attacks everything within its reach, so also do the flies. There is no insect whatever which they will not at- tack in order to leave their fatal present in its body ; the cater- pillar, the gnat, and even the spider himself, so formidable io8 DICTIONARY OF to others, is often made the unwilHng fosterer of destructive progeny. a. Error, The Recuperative Power of. — Error is a worm which it is difficult to destroy. It possesses a power of wrig- gling away from its assailants and recuperating its existence even when, to all appearances, it has been annihilated. Its vitahty resembles that of the earthworm which we often see an object of contention between two birds, neither of which is willing to part with it. In the contest the worm is frequently divided into three parts, each of the birds flying away with a portion, and leaving the center part of the animal behind, which, if the situa- tion where it is left be favorable, begins in a few days to repair its loss, and in a short time restores its deficient parts and re- sumes activity. In like manner an error often revives after tri- umphant controversialists have departed in complacency, rejoic- ing in their spoils. p. Error, The Annihilation of. — The Fiume Salso in Sicily enters the sea so charged with various salts that the thirsty cattle refuse to drink of it. A stream of sulphureous water, as white as milk, descends into the sea from the volcanic mountain of Idjeng, on the east of Java ; and a great body of hot water, charged with sulphuric acid, rushed down from the same vol- cano on one occasion, and inundated a large tract of country, destroying, by its noxious properties, all the vegetation. In hke manner the Pusambio, or "Vinegar River," of Colombia, which rises at the foot of Purace, an extinct volcano, 7500 feet above the level of the sea, is strongly impregnated with sulphuric and hydrochloric acids, and with oxide of iron. AVe may easily sup- pose the waters of such streams to have properties noxious even to marine animals. It is a marvelous fact, however, that when these and other bad waters commingle thoroughly with the great ocean they lose all their power to injure. They are absorbed in its infinite purity, and their badness is extinguished. Sir Isaac Newton likened truth to the sea. Accepting his metaphor, we may with more patient eyes watch all the vicious and erroneous currents of pestilent pubhc opinion running their course, and feel siu-e that their power to injure mankind is circumscribed, SCIENTIFIC ILLUSTRATIONS. 109 because they will eventually be neutralized by and absorbed in the sublime ocean of truth. e. Errors, The Reappearance of Old It is very remarkable that errors which are buried in one generation often arise and are current in subsequent generations. You think they have disappeared forever, but lo ! they are again in motion yonder. They remind us of the subterranean courses of some of the rivers which we meet with, more particularly in the Secondary Limestone districts of some countries. Styria and the neigh- borhdbd of Trieste are examples. Suddenly emerging in large volumes from the base of a lofty moimtain, the waters flow across rich alluvial plains, and are then as suddenly lost in the cavities of another mountain, again to issue forth to the light of day in a distant region after their subterranean course. MA. Eternal Cycle, The. — On the surface of our globe there moves an eternal cycle of interchanges. The inorganic is con- tinually being fashioned into the organic, and this, after pass- ing through successive changes, and after having displayed the manifestations of life, is ever passing again into the inorganic, ever again giving up its fashioning forces. The crude and form- less mass of the air, gradually organized in vegetables, passes without change into animals, and becomes the instrument of sensation and thought ; then vanquished by this effort, and, as it were, broken, it returns as crude matter to the source whence it had come. Thus is the mysterious cycle of organic life upon the surface of the globe completed and maintained. The air contains or engenders the oxidized substances required — car- bonic acid, water, nitric acid, and ammonia. Vegetables, true reducing apparatus, seize upon the radicals of these, carbon, hydrogen, azote, ammonium, and with them they fashion all the variety of organic or organizable matter which they supply to animals. Animals, again, true apparatuses of combustion, reproduce from them carbonic acid, water, oxide of ammonium, and azotic or nitric acid, which return to the air to reproduce the same phenomena to the end of time. bl. Eventide Favorable to Meditation. — The dimness of no DICTIONARY OF evening is favorable to meditation, because much light stimu- lates the optic nerve to a degree that distracts the attention from remembered ideas, and impresses reahties too forcibly to permit imagination free exercise. u. Evil, The Good of. — When the minarets of Asia sparkle in the morning's rays, the vultures, crows, storks, ibises, set out from their balconies on their various missions; some to the fields to destroy the insect and the serpent ; others, aUghting in the streets of Alexandria or Cairo, hasten to accomplish their task of municipal scavengering. Did they but take the briefest hoKday, the plague would soon be the only inhabitant of the country. If the sun is punctual in fertilizing life, these scav- engers — sworn in and hcensed by Nature — are no less punctual in withdrawing from his rays the shocking spectacle of death. Seemingly they are ignorant of the importance of their func- tions. Approach them and they will not retreat. When they have received the signal from their comrades, the crows, which often precede them and point out their prey, you will see the vultures descending in a cloud from one knows not whence, as if from heaven. Naturally solitary and without communication, mostly silent, they flock to the banquet by the hundred, and nothing disturbs them. They quarrel not among themselves, they take no heed of the passers-by. They imperturbably ac- comphsh their functions in a stern kind of gravity, with de- cency and propriety ; the corpse disappears, the skin remains. In a moment a frightful mass of putrid fermentation, which man had never dared to draw near, has vanished — has reentered the pure and wholesome current of universal hfe. The vulture is an offensive bird, and typifies moral evil. Like moral evil, it has to accomplish good. Our tyrant kings, our brutal soldiery, our dishonest speculators, what have they, the high priests of moral evil, been compelled to accomplish in spite of their own designs ? They have been used by Nature as vultures. They have cleared the way for settled government, strong laws, rail- ways, roads, and civilization. t. b. Evil, Destroyers of. — The secretary-bird, or serpent-eater SCIENTIFIC ILLUSTRATIONS. ill [Serpentarius reptilivorus), is found upon the dry plains of South- ern Africa, where it wages an incessant and deadly war with the infinite multitude of snakes and reptiles of all kinds with which that region abounds. Its wings, which are of large size, and covered with strong quill feathers like those of most Fal- conidce, are further armed with blunt but strong spurs at the wrist-joint, and these wings the bird holds before him like a shield, keeping them in continual agitation, sparring, as it were, as he advances sidelong toward his intended prey. His long legs, which enable him to run with rapidity, also give him a great advantage in this mode of attack, by raising his head to a safe height from the ground ; and as he gradually approaches the snake, he watches carefully for the moment when the latter is about to spring upon him, and to fix its poisonous fangs in some vulnerable part of its adversary's body. But this is usu- ally a vain attempt ; as the rSptile dashes upon its enemy, a sud- den and most violent blow from the bird's armed wing throws him writhing upon the ground, and this process is repeated if the snake be strong enough to return to the attack. After re- ducing his foe to a helpless condition by these tremendous blows, the bird, like a victorious gladiator, proceeds to despatch his opponent, whom he swallows whole if of a convenient size, or tears to pieces if too large to be disposed of at a single gulp. He has sometimes been seen to carry up a snake, which refused to die easily, to a great height in the air, and then let him fall to the ground. He confers great benefits upon the inhabitants of a region so overrun with reptilesjas Southern Africa. It is somewhat difficult to understand the reason for the creation of these poisonous reptiles, as also it is to account for the introduc- tion into our world of moral evil and its mischievous progeny. The secretary-bird may be taken to illustrate the very impor- tant truth that although Nature has produced and does rear evil things she also provides adequate means for their destruction. To help in the destruction of noxious reptiles we have the sec- retary-bird. For the piupose of combating the vices we have the preacher and the reformer. MU, 112 DICTIONARY OF Evil, The Power to Reject It is a remarkable fact that the venom of poisonous snakes (indeed any morbid and venom- ous virus) can be swallowed with impunity. It is neither acrid nor burning, and only produces a sensation on the tongue anal- ogous to that caused by greasy matter. If healthy, there is a power within us to neutralize the operation of this poison, and to reject it. The mind possesses an analogous power. It may imbibe moral poison, but if in a healthy condition it will not appropriate it into the system. re. Evil, The Limitation of — The Raptores, or birds of prey, live only by rapine, and are naturally plunderers and blood- thirsty. Like the Carnivora among mammalia, they live on animals either dead or living ; like them too they possess the strength and adroitness which are necessary to satisfy their san- guinary appetites. They enjoy no power of song. Destruc- tion seems the sole object of their existence. Nocturnal and diurnal, they are the terror of all the rest of the feathered crea- tion, among whom they make numerous victims. They are cruelly despotic, and reign as lords and masters in the districts which they choose for their territory. But Nature puts a limit to evil, physical as well as moral. And so, with her ever-ad- mirable foresight, she has wisely limited the reproduction of these destructive and cruel creatures. The largest of then only lays two eggs a year ; the others on an average five or six. A^'hat^ a horrible thing it would be if they possessed the fecundity of the domestic fowl ! fl--A few specimens of evil are quite enough, and so Nature provides that there shall only be a few. Cahgulas, Neros, Buonapartes, and all that class of creatures — the human Raptores — are also beneficently kept within limits as to numbers. re. Evil in Unexpected Places. — Evil is not limited to any locality or set of circumstances. Men sometimes think that if they could get away from the din and jargon of the city, and the tricks and snares of the market, they could discover some quiet sacred glen, or lovely peaceful retreat, where baseness and depravity could not enter. Never was there a greater SCIENTIFIC ILLUSTRATIONS. 1 13 error. Of old the serpent found his way into even paradise. Commerce and religion are two mighty streams whose civihzing influences are felt all the world over; yet even in closest con- tiguity to their influences what horrible forms of evil and gro- tesque shapes of barbarity are discernible ! The physical world suffers like the moral world from the intrusion, into its most beautiful associations, of incongruous and detestable forms. Look at those two magnificent rivers — the Orinoco and Amazon. Behold the forests which cover the region that divides them — forests the growth of thousands of years, grand and noble, al- most sublime. What have we in this noble panorama to mar the beauty and to chill our joy? Why, where the shallow parts of the river disclose a sand-bank, the crocodile may be seen, with open jaws, and motionless as a rock, its uncouth body often covered with birds ; while the checkered boa-constrifctor, its tail lashed round the trunk of a tree, lies coiled in ambush near the bank, ready to dart with certain aim on its prey. Rapidly un- coiling, it stretches forth its body to seize the young bull, or some feebler prey, as it fords the stream, and moistening its victim with a viscid secretion, laboriously forces it down its dilating throat. Let the lesson be learned that in this world there is no scene into which evil will not creep, no place where danger does not lurk. vi. Evil Detected though in New Modes ol Existence. — It is not at all uncommon for honey to be unwholesome on ac- count of its having been collected by bees from poisonous plants. The honey of Trebizond, for example, has long been notorious for its deleterious properties ; it poisoned the soldiers of Xeno- phon during the famous retreat of the Ten Thousand. Pliny, too, speaks of it ; and to this day its intoxicating effect is fre- quently witnessed. It arises, no doubt, from the plants, chiefly the Azalea pontica, from which the honey is gathered. Mr. Barton has given us a similar account of the poisonous quality of the honey gathered by bees from the savannas of New Jer- sey, where the kalmia and the azalea are the principal flower- ing shrubs. L. 114 DICTIONARY OF Evil, The Breaking Forth of Hidden — Sometimes the moistened clay on the margin of the swamps near the Orinoco will blister and swell slowly into a kind of mound, until, with a violent noise, like the outbreak of a small mud-volcano, the ac- cumulated earth is cast high into the air. The spectator who comprehends the purport of this strange scene immediately re- treats, for he knows that the birth of the portentous travail will be a gigantic water-snake or huge crocodile aroused from its torpidity. d. Evil Thing, The Terrific Force of an. — The lance- headed viper, or Trigonocephalies [Bothrops lanceolatus), is most common in the West Indian Islands, where it is justly dreaded. It has been computed that at Martinique fifty persons out of a population of one hundred and twenty-five thousand souls die annually from the bite of these odious reptiles. Their fecundity is frightful. Every female bears sixty young, which on their very advent into the world are completely formed and able to wound. This viper, unlike the rattlesnake, carries no warning rattle ; nothing indicates its presence. d. Exaction, The Unwisdom of. — The llama, or guanaco [Auchenia llama), is found among the recesses of the Andes. In the silver-mines his utility is very great, as he frequently carries the metal from the mines in places where the declivities are so steep that neither asses nor mules can keep their footing. The burden carried by this useful animal, the camel of the New World, should not exceed from one hundred to one hundred and twenty-five pounds. If the load be too heavy he hes down, and no force or persuasion will induce him to resume his jour- ney until the excess be removedrjl Thus he teaches us the un- wisdom of endeavoring to exact tSo much from those who are willing to serve us well. vt. Existence by Instalments. — There are creatures which possess existence by instalments. " The Vibrio, Rotifer, JSIacro- biotus, etc., are," says Professor Owen, " organisms which we can devitalize and revitalize, devive and revive, many times." Living together as these sorts of organisms generally do, tenant- SCIENTIFIC ILLUSTIiATIONS. 115 ing the same tufts of moss or the same patches of lichen, they eke out their existence by instalments, instead of enjoying a more or less definite and continuous span of life. They possess the power of resuming active vital manifestations, after these have been completely in abeyance for five, ten, fifteen, or even twenty years. During the suspension of their functions they can no more be looked upon as living things than can the dor- mant seeds in the Egyptian catacombs. Though not living, they, like these seeds, possess the potentiality of manifesting hfe ; and for each alike, in order that this potentiality may pass into an actuality, the first requisite is water, without which life in any real sense is impossible. b. l^ Expansion, Room for. — The narrow dogma makes no allow- ance for the expansion of men's hearts and brains, and there- fore becomes obsolete. The society which is based on rigid bigoted small rules and pedantic formulas breaks up, because no arrangements have been made for the inevitable expansion of the hopes and opinions of its members. There'must be room for expansion. This is perfectly well understood in the arts, and practical men make proper arrangements in obedience to this law. The bars of furnaces must not be fitted tightly at their extremities, but at least must be free at one end, other- wise in expanding they would split the masonry. In making railways a small space is left between the successive rails, for if they touched, the force of expansion would cause them to curve or would break the chairs. Water-pipes are fitted to one another by means of telescopic joints, which allow room for expansion. In every department there must be provision made for expansion, ti- el. Exteriority Secondary to Utility The swallow caught in the morning and closely examined is seen to be a strange and ugly bird ; but this fact perfectly well agrees with what is, par excellence, the bird — the being among all beings born for flight. To this object Nature has sacrificed everything; she has laughed at mere form, thinking only of movement, and has succeeded so well that this bird, ugly in repose, is when flying Il6 DICTIONARY OF the most beautiful of all. Scythelike wings, projecting eyes, no neck (in order to treble her strength), feet scarcely any or none ; all is wing. These are her great general features. And a very large beak always open, which in flight snaps at its prey with- out stopping, closes, and again, reopens. Thus she feeds while flying; she drinks, she bathes while flying; while flying .she feeds her young. Her exteriority having been made in all re- spects entirely subservient to her efficient performance of her movements, she does all these things easily and well.r' It would be a good thing if some of our fashionable ladies and gentle- men would learn the lesson which Nature teaches by means of the swallow. Why cannot they so arrange their externals as to make them helpful instead of retardatory in the work of life ? Why must they put the proper discharge of duties in the second place, and showy exteriority in the first? t. b. External Change without Radical Alteration. — It is of paramount importance to discriminate between a mere change of form of a thing and a radical alteration in its nature. Here is the test question for solution : " Is the change in question merely an external one, or is it a change in essence ? " Be not deceived ; you may have a total change in the outside which leaves the subject of it still the same. Look among the bushes there and you behold clearly enough the skin of a snake. He has certainly changed. Yes, but only in his skin. The snake is still alive, and as much a snake as ever. Even this modifica- tion of his external appearance too was (as it often is with other existences besides the snake) a mere matter of convenience. The external covering just thrown oif was not so good as the one which was to supersede it, and which had been in prepara- tion some time. So as soon as the new .skin was quite ready the snake wriggled to the bushes most expedient for his pur- pose, and by their help literally crawled out of his old skin and left it there on the bush. A wonderful change no doubt in one sense ; and yet it is one which is unattended by any alteration in the nature of the snake. We often observe total changes in the manners of society, and in the tricks of politics, which are SCIENTIFIC ILLUSTRATIONS. 117 not at all important, and superficial alterations which have no radical significance whatsoever. When the acorn develops into the oak, the transformation is wonderful. But when the snake sheds its skin, it is still a snake. The proceeding is just one of those many surface changes which the world sees whereof noth- ing important issues. c. o. Extremes, The Love for The force of attraction varies in different parts of the magnet ; it is strongest at the two ends, and is totally wanting in the middle. This may be seen very clearly when a magnetic bar is placed in iron filings ; these become arranged round the ends of the bar in feathery tufts, which decrease toward the middle of the bar, where there are none. That part of the surface of the bar where there is no visible magnetic force is the neutral line, and the points near the ends of the bars where the attraction is greatest are the poles. Men are often like these iron filings on the magnet. They shun the neutral linie, and riish to one or other of the opposite poles of thought.:^n nearly all departments of thought and action, and among all religionists and politicians, we see the masses attracted by some extremes. In times of passion and excitement it seems of little service to point out to men that experience teaches that truth often resides between the extremes. The attractive force of that abstract fact is not enough for them. The magnetism of the extreme view is all- powerful ; and thus the partizans draw ofif, not only as far as possible from each other, but also a very long way from the truth itself, which, though they heed it not, remains like a neutral line drawn between them both. el. Eye not Infallible, The.— One of the most curious mirage effects is to be seen on the Wash during hot summer weather. The mirage is there known as the "looming of the land," and when it is about it is impossible at moments to distinguish the sand and weed banks from the sea, while the distortion, both perpendicular and horizontal, of ship-masts, etc., is ludicrous. In one case a herd of seals on a sand-bank seemed transformed into a row of long-legged monsters, wading in water, or rather Ii8 DICTIONARY OF rooted by their long legs to the legs of a similar row of mon- sters below them, which was their distorted reflection in wet mud. NAT. Eyes, Creatures without — Men who have no intellectual perception and men who have no spiritual perception may be met with. Natiue produces creatures without eyes sometimes. In the grotto of the Madalena at Adelsberg, in Illyria, many hundred feet below the surface are seen creatures like slender fish moving in the mud below the water. These are the pro- tei : the animal is of a fleshy whiteness and transparent in its natural state, but when exposed to light its skin gradually be- comes of a darker color, and at last gains an olive tint. Being abundantly furnished with teeth, it is inferred that the animal is one of prey, yet in its confined state it has never been known to eat, and it has been kept alive for many years by occasion- ally changing the water in which it was placed. In dry seasons the protei are very seldom seen in the lake of the Madalena, but after great rains they are often abundant. Their natural residence is an extensive subterraneous lake, from which in great floods they are sometimes forced through the crevices of the rocks into the place where they are found. These singular creatures have no organs of vision, but in their place are two small dots which occupy the position of eyes. It has not been ascertained that they have any power of perception. The en- tire absence of color, and the imperfect development of their organs in at least their intermediate condition, between those of a reptile and a fish, seem to be the result of the absence of light. SA. Fallen, The Tempting Instinct of the. — One of the most remarkable examples of the instinct to tempt others into a lower condition is shown in the method by which the tame female elephant is trained to catch wild males. The females appear, from the accounts which we have of their proceedings in Sir Stamford Rafifles's Life, and in " WilHamson's Sports," to mani- fest a desire to bring the males, which the hunters point out to them, into the same condition in which they are themselves. SCIENTIFIC ILLUSTRATIONS. 1 19 They will in\'eigle any one to which their attention is directed with the most artful and curious wiles ; they will- lead him about so as to divert his attention from the huntsmen or drivers ; and when the cords are passed round his legs, they will even assist in fastening them. How similar is all this to the efforts which those who have become slaves to habit and sin put forth in order to reduce other persons into a like bondage ! r. Falling, Obstacles to. — Since a body falls to the ground in consequence of the earth's attraction on each of its molecules, it follows that, everything else being the same, all bodies, great and small, light and heavy, ought to fall with equal rapidity, and a lump of sand without cohesion should, during its fall, retain its original form as perfectly as if it were compact stone. The fact that a stone falls more rapidly than a feather is due solely to the unequal resistances opposed by the air to the de- scent of these bodies. The resistance opposed by the air to faUing bodies is especially remarkable in the case of liquids. The Staubbach in Switzerland is a good illustration. An im- mense mass of water is seen falling over a high precipice, but before reaching the bottom it is shattered by the air into the finest mist. In a vacuum, however, liquids fall, like solids, with- out separation of their molecules. The resistance opposed by the customs and ethics of society is the reason why many men are deterred in a rapid fall into ruin. Take away all the resis- tance which etiquette, conventional morality, philanthropy, and religion offer to the downfall of men, and, like things in a vacuum, how sadly fast the descent would become ! Many men in respectable elevation owe their adventitious position to the happy accident of strong resistance offered to their fall by the circumstances and influences surrounding. el. Family, Unlike the. — We are sometimes in human society startled to find a member of a family utterly unlike every other member of it in character, appearance, and habits. No ances- tor can be discovered to bear resemblance to him. This is strange ; but the peach-tree can tell a stranger story. Occasion- ally, at long intervals of time, a peach-tree in Virginia, or under 120 DICTIONARY OF the widely different climate of England, produces a single bud, and this yields a branch which ever afterward yields nectarines. Now nectarines differ, as every one knows, from peaches in their smoothness, size, and flavor, and the difference is so great that some botanists have even maintained that they are spe- cifically distinct. Thus does Nature intimate to us that she can make use of the parent to produce something quite unlike the parent's family. a. p. Fascination a Weapon of Destruction. — The rattlesnake ( Crotaliis horridus) feeds principally upon smaller mammals and upon birds, which it seems certain it possesses a peculiar power of fascinating — the effect, it may be, of intense fear. " When the piercing eye of the rattlesnake is fixed upon them,'' says Mr. Murray, " terror and amazement render them incapable of escaping ; and while involuntarily keeping their eyes fixed on those of the reptile, birds have been seen to drop into its mouth as if paralyzed, squirrels descend from their trees, and leverets run into the jaws of the expecting devourer.'' Hogs and pec- caries, however, are unaffected by this panic, and feed greedily upon the reptile which causes it, whose venomous fangs cannot penetrate their formidable hide. Jk d. Fear, The Stupefying Effects of — At the mere sight of one of the falcon tribe a partridge will stop as though struck with stupor, and so overcome with fear as almost to be incapa- ble of concealing itself, remaining absolutely immovable, and it is not until the dreaded enemy is gone that it regains self-con- trol. - It will even permit itself to be stifled in its hiding-place rather than expose itself to the falcon, vulture, or sparrow-hawk. The like stupefying effects of fear are constantly seen among mankind. The lives of many are- subject to constant misery as the result of fears, sometimes reasonable, sometimes un- reasonable, respecting the intentions of real or imaginary ene- mies. And probably there is no individual who has not at some time or other been under the horrible spell of fear which, whether acting on man or bird, has for the time the power to snatch from the muscles and nerves all their vigor and tone, and deprive its .subject of all capacity for action. re. SCIENTIFIC ILLUSTKATIOKS. 12 1 Feeble, The Might of the. — Before despising what may appear feeble and impotent, it is worth while to pause to learn a lesson from some of Professor Bailey's examinations. Pro- fessor Bailey having examined deep-sea soundings obtained by Brooke's deep-sea-sounding apparatus from the bottom of the ocean, at the depth of more than two miles, found them, he tells us, all filled with microscopic shells. They were chiefly made up of perfect little calcareous shells (Forammiferce), and con- tained also a small number of sihcious shells [DiatomacecE). It would seem that these little marine insects, which, when alive, glow and sparkle on the surface of ' the sea, and there build their habitations, when they die sink in vast multitudes, and settle at the bottom, as if for the purpose of filling up the vast chasms of the ocean. They are the atoms of which mountains are formed, plains spread out. Our marl-beds, the clay in our river-bottoms, large portions of many of the great basins of the earth, are composed of the remains of just such little creatures as these, which the ingenuity of Brooke and the industry of Berryman have enabled us to fish up from the depth of more than two miles (twelve thousand feet) below the sea-level. These Foraminiferce, therefore, when living, may have been pre- paring the ingredients for the fruitful soil of a land that some earthquake or upheaval in ages far away in the future may be sent to cast up from the bottom of the sea for man's use. Now who does not recognize in history that something of a similar process goes on all the world over ; that the influences which appeared merely transient have not been so, but have reap- peared in other forms and places ; that the little things which were forgotten have not been obhterated, but have been accu- mulating and gathering power ; that the multiplication of Httle things has produced vast changes ; that society is not renovated by rapid alterations upon its surface, but by the operation of an immense number of individuals ; that, in fact, the weak things of the world often confound the mighty, and the base things are those chosen to fill up social chasms and effect stupendous changes? That which the hurricane is powerless to accomplish •122 DICTIONARY OF is quietly done by the Foraminiferce. The change which revolu- tions are impotent to achieve is realized merely by accumulated words of wisdom and deeds of benevolence. t. Feminine Masculinity. — It is a singular fact that the males in certain sub-breeds of fowls have lost some of their secon- dary masculine characters, and from their close resemblance in plumage to the females are often called "hennies." Mr. Grant- ley F. Berkeley relates the still more singular case of a cele- brated strain of " polecat game-fowls " which produced in nearly every brood a single hen-cock. The great peculiarity in one of these birds was that he, as the seasons succeeded each other, was not always a hen-cock, and not always of the color called the polecat, which is black. From the polecat and hen-cock feather in one season he molted to a full male-plumaged black- breasted red, and in the following year he returned to the former feather. But this is not the only specimen of feminine masculinity exhibited by creatures under domestication. There is the modern married man, whose ancestors have been under severe conjugal training — the half-man. This curiosity of de- jection always reminds one of the " hennies.'' For a season he has the appearance of being a manikin, but for quite an equal period he resembles the shrew. Unfortunately there is, in his case, no fixed time for his alternations of character, so you can never be sure as to how you may find him. He ma^ show signs of the masculine character at the very moment when you expect to behold him in his most interesting effeminacy ; and, on the other hand, you may find him with all the -^-ices of the female at the very moment when you had anticipated that he would exhibit himself as a man. He is most often met with among the middle classes of our large towns, and is clearly an interesting addition to the list of organisms which ha\'e very much varied under domestication. va. Fictitious Prestige. — It would be a marvelous investiga- tion to ascertain the principles upon which honor and credit and reputation are bestowed on men by their fellows. Very often there is no more just ground for the reputation men are SCIENTIFIC ILLUSTRATIONS. 123 enjoying than there is for the reputation which the chimpanzees have acquired. "The chimpanzees Hve in troops in the forest, or at least they congregate for the purpose of repelhng the at- tacks made upon them by the Carnaria, and to drive from their domains such other animals as may attempt to install themselves therein to their disad\'antage. Their weapons are ready to their hand — stones and the branches of trees. Like the orangs, they construct rude beds or couches of interwoven boughs stripped of their greenery.^ In consequence of this the negroes of Guinea, scarcely much higher in the scale of intelhgence than themselves, look upon them as a nation, and believe that if these men of the woods do not speak, it is because they fear to be con- demned to work or carried off into slavery, and not from incapac- ity. So these creatures have credit for being a nation, and as it also seems, for being very acute and shrewd. It is obvious that in many other instances among men individuals and classes are credited with powers and a stahis which are entirely ficti- tious. " In the kingdom of the blind, the one-eyed man is king." Stupid conventionality, stoUd prejudice, cold formahty, and long habit have all had the effect of so dwarfing our men- tal capacity that we are constantly ascribing to those whom the accident of birth has placed in a sphere different from our own, some wonderful ability which they cannot possess, and some extraordinary power which does not exist. In all this we are like those negroes of Guinea, for we look up at assemblages of little men in elevated positions, and ascribe to them fictitious prestige, as they look up at the chimpanzees, and actually con- ceive them to be in mind sagacious and in social power a nation ! d. Finical Disposition, The. — Humboldt states that the capu- chin saki (a monkey inhabiting Brazil, Guiana, and Colombia) takes the most minute precautions not to wet its beard. When it is thirsty, it seats itself by the side of a stream, and scooping up the water in the hollow of its hand, carries it to its mouth, repeating these movements as often as may be necessary to quench thirst, but without ever wetting or rumpling its valued 124 DICriOKAKY OF chin appendage. It is not, however, with all this affectation of nicety, superior to other monkeys in other particulars. It is a good representative of the finical character among men — of that individual who is punctiliously careful not to crease a glove, ruffle a hat, or soil a boot, yet in all essential particulars and habits is not one whit better than his fellow-men. m. Fits and Starts. — It is sometimes complained of a great genius that he works by " fits and starts." The fact, however, is that this is in some cases the natural way of making up the required work. Let us refer to the phenomena of the sea. Instances of commotion in the sea at uncertain intervals — the making, as it were, of efforts by fits and starts to keep up to time in the performance of its manifold offices — are not unfre- quent, nor are they inaptly likened to spasms. The sudden dis- ruption of the ice which Arctic voyagers tell of, the immense bergs which occasionally appear in groups near certain latitudes, the variable character of all the currents of the sea — now fast, now slow, now running this way, then that — may be taken as so many signs of the tremendous throes which occur in the bosom of the ocean. Sometimes the sea recedes from the shore, as if to gather strength for a great rush against its barriers, as it did when it fled back to join with the earthquake and over- whelm Callao in 1746, and again Lisbon nine years afterward. Colossal power cannot be expected always to work with the mechanical precision of a watch, and perform a uniform num- ber of movements each minute. t. Flagging Energies, Refreshing Influences for. — In order to watch ants, Huber constructed a vivarium in which they could work, and supplied them with earth, sand, and other nec- essaries. As in this artificial state of existence the insects could not procure moisture from the depths of the earth, moisture from other sources was necessary. Whenever the insects had ceased to work, they could almost always be induced to renew their labors if water was supplied them so as to descend like very fine rain upon the earth. As soon as the formerly quiescent ants felt the shower they regained their activity, ran about with SCIENTIFIC ILLUSTRATIOXS. 125 renewed energy, and set to work upon the soil.7 In their artifi- cial state they especially needed refreshing influences. So do we in ours. We often feel that we can work no more. Our societies and institutions sometimes seem to come to a stand- still. But if some refreshing influence from outside is brought to bear upon us, the whole appearance of things is at once changed. If we take the history of church and chapel debts, and of philanthropic and political societies, we shall have a long record of the instances in which the suspended activities of communities were entirely resuscitated by opportune refreshing influences from without. h. Fools as a Species. — When we see how perverse, ridiculous, and incapable of being made wise are some of the persons who thrust themselves upon public notice, and observe that in all ages and countries the man whom Solomon persistently desig- nates as " the fool " has been a well-known character, we are reminded of what Mr. Darwin says of the goose. He remarks that " this bird deserves some notice, as hardly any other an- ciently domesticated bird or quadruped has varied so little." In the year 3.88 B.C. these birds were kept in the capitol at Rome as sacred to Juno. But the goose has proved inflexible in its organization under long-continued domestication. The chief variation which can be detected is that the bird has in- creased in size and in productiveness, and varies from white to a dusky color, " The amount of variation which it has under- gone, as compared with most domestic animals, is singularly small. This fact can be partially accounted for by selection not having come largely into play. Birds of all kinds, which present many distinct races, are valued as pets or ornaments ; no one makes a pet of the goose : the name indeed, in more languages than one, is a term of' reproach." va. " Footprints on the Sands of Time." — In the British Isles footmarks of Sauroid animals have been detected in the coal- field south of Edinburgh, and the impressions of the feet of another reptilian animal have been found in the coal-field of the Forest of Dean. American geologists have evidences, in our 126 DICTIOiXAKY OF lowest Silurian (Potsdam) beds, of numerous trails of animals, probably crustaceans, by which a film of mud or sand formed by one tide was tracked and burrowed before another covered the impressions, and left them to future ages as proofs of layers deposited on the shores of former lands. Some of the coal sandstones in the environs of Manchester, England, exhibit on their siu-faces the clearest indications of having been shore deposits, certain tracks having been marked on them by ani- mals which must have crawled at ebb-tides. Longfellow speaks of " footprints on the sands of time " ; and here they are literally. In a metaphorical sense we may trace also through the centuries the footprints of our intellectual giants. They are seen in our literature, in our picture-galleries, in our sculpture, in our architecture, and our laws. si. Forces, The Mightiness of Silent. — We often overlook the mightiness of forces because of their silence. Were we en- dowed by Nature with a microscopic eye, and were the integu- ments of plants completely transparent, the world of vegetation would not meet us with that aspect of immobility and repose in which it now presents itself to our senses. The interiors of the cellular structures of vegetables are ceaselessly animated by the most diversified currents, rotary, rising and falling, dividing and ramifying, or altering their direction, as is made manifest by the movement of the granular sap-corpuscles in the leaves of sev- eral winter plants {Najades, Characece, ffydrocharidece), and in " the hairs of phanerogamous land plants. There is at the same time seen a confused molecular movement, first observed by the distinguished botanist, Robert Brown, but which also occurs among finely divided particles of matter of all kinds, the phe- nomenon not taking place only within organic cells ; the cir- cular movement of the globules of the cambium, in a system of special vessels (cyclosis) ; lastly, the singular ai-ticulated fih- form vessels of the anthers of the Chara, and the reproductive organs of the liverworts and seaweeds, which have the faculty of uncoiling themselves, and in which Meyen, snatched too soon from science, believed that he recognized the analogues of the SCIENTIFIC ILLUSTRATIONS. 127 spermatozoa of the animal creation. If to the multifarious excite- ments and movements we add those that belong to endosmose and the processes of nutrition and growth, and, further, to the penetration (and exhalation) of air, we have a picture of the forces which, almost unknown to us, are active in the silent life of the vegetable world. k. Foreknowledge and Prophecy What decides birds to emigrate? It is not want of nourishment, for most begin the journey while they have abundance. Those confined in cages are very resriess at the time of their proper migration. Atmo- spherical currents are not the cause ; nor do the changes of sea- son explain it, as the greatest number set off while the weather is yet fine, and others, as the larks and starlings, arrive while the season is bad. Atmospherical influences can only hasten the migration in autumn, or retard or derange it in spring. It is the foreknowledge of what is to happen which determines birds to begin their journey. It is an instinct which urges them, and which initiates them into the meteoric alterations that are preparing. They ha\'e a particular faculty of foreseeing the rigor of the coming season, and exquisite sensibility for atmo- spherical changes which have not yet arrived, but are approach- ing. Some men are also endowed by Nature with a foreknow- ledge which is even more wonderful than that which has been bestowed upon the birds. They are furnished with a faculty for foreseeing future events and describing future processes. These men are prophets, and are among the most valuable of the human race, 'f t. b. Foresight. — The " hand-to-mouth " people are a sad nui- sance. As long as they have anything which they can consume they will consume it, no matter whether they can do as well without it or not, and when they are in distress through their prodigality they beg. Utterly improvident, wasteful, and self- indulgent, destitute of all foresight, they act like apes. For the ape will indulge himself very completely and recklessly. Cove- tous of and appropriating everything, he not only lays by no store, in consequence of the abundance of food with which he 128 DICTIONARY OF is surrounded, but even throws away the food he is eating to possess himself of the next object which attracts him. But the " hand-to-mouth " people need not imitate such antics as these when they know the penalty they always bring. Creatures less like themselves than the ape can teach them a wiser method. For some animals during hybernation always lay up provisions ; nor is this precautionary economy confined to that period alone. The satiated spider secures its new captives in its web ; and the shrike spits beetles on thorns as a reserve for a future meal. Owls, ravens, magpies, and nuthatches hide their superfluous food ; the wolf, the fox, the lynx, and the wild dog bury por- tions of their food against the next calls of hunger. Even here we have foresight. p. Forethought. — The leopard every day, before going in search of its prey, sharpens its claws dn a tree, against which it stretches all its length. Learn from him to prepare yoiuself for the work you mean to do. Good" work needs forethought and preparation quite as much as bad.-7^ m. Forewarned is Forearmed. — The negroes of Martinique, who of necessity are assiduous reptile-hunters, state as an in- controvertible axiom, confirmed by immemorial experience, that " a serpent seen is a serpent dead." The Trigonocephalus or lance-headed viper (a most poisonous reptile) is only formida- ble to man when not perceived, and when one treads upon it accidentally in the countries which it inhabits. If the wayfarer be prudent and beat the herbs and bushes as he advances with a switch, the reptile, which is too large to glide away unseen, will reveal itself and take flight. In the open field its defeat and death are inevitable, however little coolness or skill its as- sailant may possess. d. Formalists, The — The formalists devote all their energies to modifying or altering the external appearances of things. There are civilized formaUsts and uncivilized formalists. Among the latter it is in point to rt-fer to those who give their attention to the appearance of the head. Now it is possible to modify the shape of the head very considerably, without inflicting any SCIENTIFIC ILLUSTRATIONS. 129 great or abiding injury on the mental faculties, by applying com- pression in a particular way, so as to make the skull assume a different shape from the natural one without lessening its vol- ume or the mass of its contents. Dr. Graves tells us that some of the Indian tribes called Flatheads compress the skull laterally, and by this means the head is made to assume a flattened and' elongated shape, so that a line passing from beneath the chin to the vertex, instead of measuring seven or eight inches, is nearly twice that length. The origin of this disfigurement is to be traced to that all-prevailing principle, vanity, a flat and elongated head being looked upon by the Indians as an un- equivocal mark of nobility and beauty.^^ Other tribes compress the head backward and downward so as to make it project posteriorly in a very curious manner. Which of these modes is the most physiological it is not necessary to pronounce, but they certainly succeed in altering the shape of the skull and braip to a very considerable extent ; and what is equally curi- ous, this unnatural treatment does not appear to interfere much with the development of their intellectual faculties. It would appear that though the natural shape of the brain is greatly changed, still this organ retains its usual size and weight. Among the civilized formalists we have those who are always aiming at alteration in the forms of the Church ; others, who by an enforced improvement in the customs of society seek to put a new appearance upon the country. The like amount of work expended with an intelligent desire to change the inner character of the people would produce glorious results. Of what consequence are mere forms if the great mind of the world is all right ? What can the form, either of the skull or of the institution, matter if the brains are strong and healthy ; for if the latter be really all right, of what possible importance is it whether the former have or have not the appearance of being either broad or narrow, expanded or contracted ? And if that which is contained in the form be not strong and healthy, how can you produce the strength and the health by merely operat- ing upon the outside form ? s. 13° DICTIONARY OF Fortune=Fishing, Running Risks in The Pondicherry eagle [Haliastur Indus) is a common and conspicuous species in India. It is seen constantly sailing over the tanks, rice-fields, ' and rivers at a moderate height, often passing up and down the course of a river, ready to pounce down in a moment at any "unlucky fish that may make its appearance at the surface of the water. It usually snatches up its prey from the surface without immersing itself, but occasionally it dips entirely under water, when it experiences some difficulty in rising again with its prey, i' It then risks its being upon its speculation. In this it resem- bles the human fisher for fortune. Sometimes he departs from his proper course and stakes upon a novel and greedy adven- ture his whole nature — his health and his soul. He dives into the very waters of the poisonous Styx to obtain what he wants. He may escape being drawn down into the stream of hell, but it is with difficulty that he rises to enter again into the sunny air of rectitude. Mu. Friends, Even the Vile liave When the crocodile of the Nile takes his food, his mouth is constantly covered with m}T- iads of insects called Bdella, which are no other than Euro- pean gnats. They fly into the reptile's mouth in such num- bers that they cover the entire surface of the palate and form a brownish crust. They pierce the reptile's tongue with their stings, and even excite it to madness. The Charadrius ^gyp- tiiis, or Nile bird, comes to the rescue. It flies to the mouth of the monster to catch them and deliver him from such innumer- able enemies, and is perpetually seeking even in the mouth of the crocodile the insects which form the principal part of its nourishment. The rapacious crocodile, though it lives on flesh, and with one bite could destroy, sJiows its repognition of the service, and never harms the bird, j It would seem that as it is among reptiles, so it is among men ; there is none so vile as to be utterly deprived of friends. Even some of our vilest burg- lars and murderers have been blessed with wives and children who have tended to their necessities and been faithful unto death. Mutual advantage is the bond of union between the SCIENTIFIC ILLUSTRATIONS. 131 crocodile and the Nile bird ; and it is often (though of course not always) the explanation of many queer human coalitions, from which monsters derive vast advantage. re. Friendship, Emblems of True. — You may learn a lesson from that prettily marked pilot-fish, with its beautiful purplish- colored back and head, although it is only between four and eight inches long. It is reputed to be a guide to the shark ; and whenever the shark is alone it is a rare occurrence to find him without the attendance of one or two pilot-fish. But when there are several sharks together, the faithful attendant seems too retiring to intrude himself, for he is then absentru If you are a humble friend to any one, learn from this to come when you are wanted, and do not intrude yourself when your com- pany is not required. ga. Frotliy Period, The. — The aphrophora lives in froth. In the months of June and July one sees on nearly every tree, and on plants of the most different kinds, a sort of white froth, composed of air-bubbles, deposited on the leaves and branches. It is produced by the aphrophora, which lives in it, and only leaves it when it has wings. The animal which lives in this froth is a six-legged grub. If the froth is cleared away from it, it will hurry to certain parts of the stalk of plants, where by dint of its operations on the sap it laboriously creates for itself another covering of froth. If withdrawn from this froth the volume of its body diminishes perceptibly, and the poor grub dies, like a fish taken out of its natural element^) There are many beings besides the aphrophora who have their frothy sea- son. The adolescence of the litterateur, the preacher, and the orator is often a period of froth. It should be remembered that this is a mere passing phase of their existence. They grow out of it by the time that their mental wings are strong enough for use. It is unkind to attempt to accelerate the emergence of any one from the froth, for you may unnecessarily destroy a genius who would have raised himself out of it at the proper epoch, and who, until then, will be best left to his bubbles. I, 132 DICTIONARY OF Fuss, Great Effects without Without storm or noise the winds in their usual course accomplish surprising feats. All ex- panses of shifting sand, whether maritime or inland, like the deserts of Africa and Asia, are j'early modified by the agency of wind-drift, the wind carrying the dry sand left by the tides forward and landward beyond the reach of the waters ; and where the aerial current blows steadily for some time in one direction, as the trade-winds and monsoons of the tropics, it will carry forward the drifting material in that direction. Hence the gradual entombment of fields, forests, and villages that lie in the course of such progressive sand-waves as on the Biscay seaboard of France and on the western verge of Egypt. Re- sults like these arise from merely the ordinary operations of wind ; its extraordinary operations are manifested in the de- structive effects of the hurricane, the whirlwind, and tornado. Gentle as it may seem, the continuous drifting of sand over the surface of hard rocks has been known to wear and polish down their asperities, and even to grind out grooves and furrows like those prodilced by the motion of glacier ice or the flow of run- ning water. Here then we may observe great effects produced without fuss ; and we may easily observe, in the phenomena of ' social life, that there are plenty of illustrations there of the same principle. The whirlwind of revolutions and hurricane of in- surrections have no doubl produced startling consequences. But the influence of noble ideas, spoken by undemcpnstrative men, or embalmed in unpretending volumes, and of pious lives lived in seclusion, has produced a far greater effect upon the civilization of the world than all the blustering storms of war raised by kings and factions and reverberating through history. AD. Genius, Tlie Irresistible Current of. — Arctic voyagers tell us of an undercurrent setting from the Atlantic toward the Polar basin. They de.scribe huge icebergs, with tops high up in the air, and of course the bases of which extend far down into the depths of this ocean, ripping and tearing their way with terrific force and awful violence through the surface ice or against SCIENTIFIC ILLUSTRATIONS. 133 a surface current, on their way into the Polar basin. Captain Duncan, master of the English whale-ship Dundee, says at page 76 of his interesting little narrative : " It was awful to behold the immense icebergs working their way to the north- east from us, and not one drop of water to be seen ; they are working themselves right through the middle of the ice."/;-They were moved by an invisible power which no superficial facts could account for. They remind us of those great men in his- tory who, in defiance of all the frozen opposition of the world, have worked themselves onward to the accomplishment of their destiny. Upon the surface of things there has been nothing to account for either their course or their might. Fixed in their places by concrete conventionalities, what is it which has moved them right through all consolidated obstacles ? An unseen in- fluence^ — the stream of genius. The minds which are moved by that current plow their way in splendor through all the world's superficial opposition. t. Genius, The Perpetuating Power of. — At Knaresborough in Yorkshire is a dripping well, which appears to convert every- thing into stone. It actually covers over everything with a coating of stonelike material, which of course takes the form of the objects which it incrUsts. Mr. Frank Buckland exam- ined, among other things, a pheasant, birds' nests and eggs, all beautifully preser\'ed under a stonelike cover. The reason of the petrifaction is that the surrounding rocks of the dripping well are composed of magnesium limestone, and the lime be- comes dissolved in the spring-water. So highly charged, indeed, is it with mineral matter, that in a gallon of water there are of carbonate of lime 23 parts, sulphate of magnesia 1 1 parts, and sulphate of lime 132 parts ; and a pint weighs 24 grains heavier than common water. The water, by giving up its mineral trea- sures to all the things within its reach, confers upon them the perpetuity of stone.|;LThe well of human genius possesses a simi- lar power to confer perpetuity. Poetic men have placed all sorts of objects within its influence, and have given them end- less duration. Burns brought a " field-mouse " ; Coleridge, " an 134 DICTIONARY OP ass " ; Wordsworth, " a kitten " ; Byron, " many ladies " ; Bulwer Lytton, "the bones orRaphael"; Thomas Moore, "a pretty rose-tree " ; Tennyson, " a goose " ; Milton, his " deceased wife '' ; and many other men who are not poetic many other things, and they have been perpetuated by genius, all of them, even to Charles Lamb's "roast pig," — perpetuated as effectually as if they had been petrified by stone in the well at Knaresborough. cu. Gluttons and Geese. — The glutton and the goose are alike in many respects. In these days of liver complaints we will take an example of their anatomical resemblance. Look at the size of the liver in the case afforded by the celebrated Strasburg geese. By feeding these geese in a particular way, and keep- ing them in artificial heat, the liver becomes diseased, grows to an enormous size, and in this way furnishes the materials of a pAtevsxMoh. sought after by the scientific gourmand. How many instances occur where our citizens, exposing themselves to the long-continued operation of the very same causes — confinement, overfeeding, heat, and want of exercise — are affected by them exactly in the same way ! How slight the difference between the morbid phenomena displayed in the post-mortem of a city feaster and the autopsy of an overfed goose! s. Gluttony, The Fate of. — The favorite haunt of the Pytho7i is the low marshy ground, rank with moist herbage, where they prey upon birds and small animals, swallowing them whole — swallowing them even alive — after having seized them in the invincible folds of their long sinuous bodies, and always com- mencing with their hinder parts.' So greedy a repast must ne- cessarily be followed by a slow and difficult digestion, and can- not be renewed at any very brief interval. They eat in effect but once a month, or once in two months. During the lethargic and semi-somnolent condition which invariably follows their debauch, they fall easy victims to the attacks of their enemies. \ D. God, Human Opinions Concerning. — It cannot be too clearly impressed upon the inquirer that human opinions re- SCIENTIFIC ILLVSTRATIOKS. 135 specting God have frequently merely the effect of obscuring the glories of God. They are only the media, often the dense and unhealthy media, through which certain human intelligences look at Him ; and so far from revealing Him, they, rising from impure sources, obstruct the clear view which under other in- fluences might be obtainable. Let men's opinions in different ages and lands be what they may respecting God, He is still absolutely the same and unchanged. That which changes is the human opinion or medium through which men gaze. And it is pestilent or wholesome according to an infinitude of cir- cumstances. Sometimes we see the sun with absolute clear- ness. When there are less favorable conditions it is enveloped in dimness. But the change is not in the sun : it is contingent upon the exhalations of sublunary things; For it is evident that at each hour of the day the solar rays come from the parts above the atmosphere with the same power whether the sky be clouded or clear. If no cloud intervenes, all the rays come to the surface of the earth and heat it, but if one half or one fourth of them should be intercepted by cloud, only the other half or three fourths of the rays can affect the surface ; and when the whole sky is covered with dense clouds, the greater part of the solar rays will be intercepted by them. on. Qold and Silver, The Accuracy of Job's Reference to. — The fear that gold may be greatly depreciated in value rela- tive to silver (a fear which at one time seized upon the minds ' of some people) seems unwarranted by the data registered in the crust of the earth ; for looking to all the recent discoveries, we may be assured that gold is much the most restricted (in its native distribution) of the precious metals. p^Argentiferous lead, on the contrary, expands so largely downward into the bowels of the rocks as to lead us to believe that it must yield enormous quantities of silver for ages to come, and the more so in pro- portion as better machinery and new inventions shall lessen the difficulty of subterranean mining. It may indeed well be doubted if the quantities both of gold and silver procured from regions unknown to our progenitors will prove more than suffi- 136 DICTIONARY OF cient to meet the exigencies of an enormously increased popu- lation and our augmenting commerce and luxury. And the author of ■" Siluria " as a geologist says that Providence seems to have adjusted the relative value of these two precious metals for the use of man, and that their relations, having remained the same for ages, will long survive all theories. Modern sci- ence, in short, instead of contradicting, only confirms the truth of the aphorism of the Patriarch Job, which thus shadowed forth the downward persistence of the one and the superficial distribution of the other : " Surely there is a vein for the sil- ver. . . . The earth hath dust of gold." si. Good Feeding, The Political Value of. — Zimmermann has correctly observed that " hunger is the mother of impatience and anger." Those of the ruling classes who are quick to de- nounce, and ready to be apprehensive of the mob, would do well to bear this in mind. Depend upon it, good feeding has a far greater political value than they suppose. History does not furnish accounts of riots, uproars, or atrocities committed by well-fed mobs. A hungry mob is a dangerous mob. I If the supercilious politician has no real sympathy whatever with the people, he should still even as a measure of expediency do what he can to feed them if he fears them. He may look upon the hungry classes as very inferior creatures, but he will find they are uncommonly like himself in being easily accessible to the influences of good feeding. The serpents of faction, however much they hiss around the altars of sedition, are much like other serpents. Whenever any of the serpent kind have gorged themselves to a great extent, whenever their body is seen par- ticularly distended with food, they then become torpid, and may be approached and destroyed with safety. Patient of hunger to a surprising degree, whenever they seize and swallow their prey they seem like surfeited gluttons, unwieldy, stupid, help- less, and sleepy; they at that time seek some retreat, where they may lurk for several days together and digest their meal in safety : the smallest effort at that time is capable of destroy- ing them ; they can scarcely make any resistance, and they are SCIENTIFIC ILLUSTRATIONS. 137 equally unqualified for flight or opposition. That is the happy- opportunity of attacking them with success ; at that time the naked Indian himself does not fear to assail them, and the most timorous politician would not be too cowardly to follow. A proverb in the Efik language says : " It is the stomach which rules the man." a. Good Found where Least Expected. — The eggs of the tur- tle are thought as great delicacies as its flesh ; and it is rather a remarkable fact, that although the flesh of the hawk's-bill turtle is distasteful to all palates, and hurtful to many constitutions, the eggs are both agreeable in flavor and perfectly harmless. ^ IL. Great, The Loneliness of the. — Great men, as a rule, are not club-men. The thinkers of the world have not been society fractions. In their isolation they remind us of the oak, which is never seen in a crowd, forming what may be properly termed a wood. An oak forest is nothing more than a poetical figure ; for the oak stands alone, or mingled with other trees of differ- ent foliage, which it dominates with venerable feudal sover- eignty. We have one Dr. Johnson and a number of Boswells round about him. <" ST. Great Britain, Healthfulness of — The following is a comparative estimate pf the rate of mortality in the European states : One in twenty-eight in the Roman and Venetian states ; one in thirty in Italy in general ; one in thirty in Greece and Turkey ; one in thirty-nine in the Netherlands, France, and Prussia ; one in forty in Switzerland, Austria, Spain, and Por- tugal ; one in forty-four in European Russia and Poland ; one in forty-five in Germany, Denmark, and Sweden ; one in forty- eight in Norway ; one in fifty-three in Ireland ; one in fifty-eight in England ; one in fifty-nine in Scotland and Iceland ; so that we perceive that the duration of life in Great Britain is very great when compared with others, and that whatever foreigners may say about its dull and foggy climate, it is a fact that its inhabitants live much longer than those of the sunny climes of southern Europe.! The boasted climate ©f Italy, with its soft 138 DICTIONARY OF vernal breezes and cloudless skies, gives a mortality of one in thirty, vchereas among the Irish bogs it is only one in fifty- three ; while in the Roman and Venetian states more than twice as many out of a given number die as among the bleak districts of the Scotch Highlands. It is, then, perfectly well ascertained that in England, Ireland, and Scotland the mortality is much lower than in the poetic "lands of the sun," Italy and Greece. s. Great is Composed of the Small, Everything — Let us contemplate a drop of rain, multiplied raindrops, and their in- fluence. Few persons have ever taken the trouble to compute how much the fall of a single inch of rain over an extensive region in the sea, or how much the change of even two or three degrees of temperature over a few thousand square miles of its surface, tends to disturb its equilibrium, and consequently to cause an aqueous palpitation that is felt from the equator to the poles. Let us illustrate by an example : the surface of the Atlantic Ocean covers an area of about twenty-five miUions of square miles. Now let us take one fifth of this area, and suppose a fall of rain one inch deep to lake place over it. This rain would weigh three hundred and sixty thousand millions of tons ; and the salt which, as water, it held in solution in the sea, and which, when that water was taken up as vapor, was left behind to disturb the equilibrium, weighed sixteen millions more of tons, or nearly twice as much as all the ships in the world could carry at a cargd each. It might fall in an hour, or it might fall in a day ; but occupy what time it might in falling, this rain is calculated to exert so much force — which is inconceivably great — in dis- turbing the equilibrium of the ocean. If all the water dis- charged by the Mississippi River during the year were taken up in one mighty measure, and cast into the ocean at one effort, it would not make a greater disturbance in the equilibrium than would the fall of rain supposed. Now this is for but one fifth of the Atlantic, and the area of the Atlantic is about one fifth of the sea-area of the world ; and the estimated fall of rain was but one inch, whereas the average for the year is sixty inches, SCIENTIFIC ILLUSTRATIONS. 139 but we will assume it for the sea to be no more than thirty inches. In the aggregate, and on an average, then, such a dis- turbance in the equihbrium of the whole ocean as is here sup- posed occurs seven hundred and fifty times a year, or at the rate of once in twelve hours. When we reflect that this mighty work is accomplished by multiplied raindrops, we cannot but remember the old Latin proverb, that " Everything great is composed of many things which are small." In further illustra- tion of the same truth are the words of Young : " Sands form the mountain, moments make the year." T. Great Tyrants Sometimes Succumb to Small Heroes. —The Raftores are daring, cruel, and strong, yet, like other tyrants, they can be frightened. We read in Wilson that a tiny bird, a flycatcher, such as the purple martin, will hunt the great black eagle, pursue it, harass it, banish it from its district, give it not a moment's repose. It is a truly extraordinary spec- tacle to see this little hero adding all his weight to his strength that he may make the greater impression, rise and let himself drop from the clouds on the back of the large robber, pount without letting go, and prick him forward with his beakfin lieu of a spur. David in his dealings with Goliath, and other men in all lands and times, show us that in the human family, as among the feathered tribes, great tyrants will often succumb to small heroes. t. b. Greatest Good Occasioning the Greatest Evil, The. — By universal consent religion is man's greatest blessing ; and water is the greatest bpon of the thirsty all the world over. Yet what a confirmation both religion and water afford of the fact that the greatest good' may occasion the greatest evil ! Take, first of all, the illustration supplied by the water, and in the words of Ohver Goldsmith. In those burning countries where the sun dries up every brook for hundreds of miles round, when what had the appearance of a great river in the rainj^ season becomes, in the summer, one dreary bed of sand, a lake that is 140 DICTIONARY OF never dry, or a brook that is perennial, is considered by every animal as the greatest convenience of Nature. As to food, the luxuriant landscape supplies that in sufficient abundance ; it is the want of water that all animals endeavor to remove, and, inwardly parched by the heat of the climate, traverse whole deserts to find out a spring. When they have discovered this, no dangers can deter them from attempting to slake their thirst. Thus the neighborhood of a rivulet in the heart of the tropical continents is generally the place where all the hostile tribes of Nature draw up for the engagement. On the banks of this lit- tle envied spot thousands of animals of various kinds are seen venturing to quench their thirst, or preparing to seize their prey. The elephants are perceived in a long line, marching from the darker parts of the forest ; the buffaloes are there, depending on numbers for security ; the gazelles, relying solely upon their swiftness ; the lion and tiger, waiting a proper opportunity to seize ; but chiefly the larger serpents are upon guard there, and defend the accesses of the lake. Not an hour passes without some dreadful combat ; but the serpent, defended by its scales, and naturally capable of sustaining a multitude of wounds, is of all others the most formidable. Ever on the watch until their rapacity is satisfied, few other animals will venture to approach their station. Now take the illustration which religion supplies of the fact that the greatest good may occasion the greatest evil. The splendid anthem of Spohr only tells us, in beautiful music, the fact which history in unmusical language proclaims, that as the hart pants after the water, so all souls seek after God. Here, then, is admitted to be the great source of all good. How have men approached that source ? Do you find peace, love, charity, and all happiness characterizing their pro- ceedings ? Look at the religions of the world, with their cruel- ties and barbarisms ; listen to the brayings- of cant and the howlings and ravings of sectaries and bigots , and notice the insidious craft and poisonous malice with which some of the smooth zealots do their work ! Behold how fiercely they fight among one another ; how eagerly they pounce upon any who SCIENTIFIC ILLUSTRATIONS. 141 are not of their number, but whom they descry afar off, eagerly seeking after the source of All-purity ; and how desperately they struggle, each with each, for the mastery and capture of the anxious humble seekers of living water ! What brings all these rampant men together, and occasions this hoarse clamor of coarse voices where we anticipated gentle forms and loving sounds ? The banks of the river of life have brought them there, and by their presence they occasion the greatest evil where we have a right to expect the greatest good. a. Greediness, Insatiable — Insatiable greediness appears to characterize all the movements of some men. Everything they do has for its object the acquirement of some benefit for them- selves. They resemble the fishes whose ruling impulse is the desire to obtain something. This appetite compels them to en- counter every danger, and indeed their rapacity seems insatia- ble. Even when taken out of the water and almost expiring, they greedily swallow the very bait by which they were allured to destruction ; just as the miser at the point of death will still excite himself about obtaining more of the gold which has been his ruin. '' a. Greedy Disposition, Tlie. — The king-vulture will not per- mit any other bird to b6gin its meal until his own hunger is satis- fied. The same habit may be seen in many other creatures, in- cluding some men, the more powerful lording it over the weaker, and leaving them only the remains of the feas^ instead of per- mitting them to partake of it on equal terms.* If the king-vul- ture should not happen to be present when the dead animal has reached a state of decomposition which renders it palatable to vulturine tastes, the subject vultures would pay but httle regard to the privileges of their absent monarch, and would leave him but a slight prospect of getting a meal on the remains of the feast. Thus the greedy disposition, whether in the high or low, never concerns itself about the want of others. il. Gross Natures in Useful Employment. — The pig is an important auxiliarj' in keeping rattlesnakes at a distance in coun- tries where they abound. In the west and south of America 142 DICTIONARY OF when a field or farm is infested by these ferocious reptiles it is usual to put a sow with its young brood there, and the snakes, it is said, will soon be eaten up. It appears that, owing to the fatty matter which envelops the body of this animal, it is safe from the venomous bite. Besides, it likes the flesh of the snakes, and eagerly pursues them. When a pig sees a rattlesnake, it smacks its jaws and its hairs bristle up : the snake coils itself up to strike its enemy ; the pig approaches fearlessly, and receives the blow in the fold of fat which hangs upon the side of its jaw. Then he places a foot on the tail of the snake, and with his teeth he begins to pull the flesh of his enemy to pieces, and eats it with evident enjoyment. Tplnfidehty, intemperance, and tyranny are horrible social reptiles, and they are often success- fully attacked by ferocious, ilhterate, gross "revivalists" and demagogues, who bristle up to their work of annihilating them on a method and with a zest not inferior to this rattlesnake-de- stroyer. These men are not pleasant beings, but like those other coarse creatures, they are useful for coarse work. Their grossness is their qualification ; for the stings and wounds by which the progeny of vice would kill other public men do not affect that bloated self-complacency and dense coarseness in which their rude nature is entirely enveloped. And our feel- ings of loathing and disgust for these rpugh sons of coarseness should always be tempered by the remembrance that they are not quite so bad as that which they destroy. The pig, after all, is better than the rattlesnake. re. Habit, The Force of. — It is, as Mr. Darwin says, notorious how powerful is the force of habit. The most complex and difficult movements can in time be performed without the least effort or consciousness. It is not positively known how it comes that habit is so efficient in facihtating complex move- ments ; but physiologists admit that the conducting power of the nervous fibers increases with the frequency of their excite- ment. This apphes to the ner\'es of motion and sensation as well as to those connected with the act of thinking. That some physical change is produced in the nerve-cells or nerves which SCIENTIFIC ILLUSTRATIONS. 143 are habitually used can hardly be doubted, for otherwise it is impossible to understand how the tendency to certain acquired movements is inherited. That they are inherited we see with horses in certain transmitted paces, such as cantering and am- bling, which are not natural to them ; in the pointing of young pointers and the setting of young setters ; in the peculiar man- ner of flight of certain breeds of the pigeon, etc. We have analogous cases with mankind in the inheritance of tricks or unusual gestures. As to the domination which evil habit ac- quires over men, that needs not even a passing allusion. It is remarkable that the force of habit may affect even caterpillars. Caterpillars which have been fed on the leaves of one kind of tree have been known to perish from hunger rather than to eat the leaves of another tree, although this afforded them their proper food under a state of Nature. jfrTheir conduct might sug- gest reflection to men who are tempted by habit to risk death by adherence to debauched courses rather than return to a natural mode of Kving. ex. Habit, Age Altering. — A few years often change the habits of a man. The middle-aged man has scarcely any of the habits of the youth left. And if the proof of his identity depended on their resemblance, it would indeed be hard to establish. A like change of habit is observable in many other existences. We may take from a class of mollusks the acorn-shells {Balamis balanoides) as an example. It is a very remarkable fact, that although the Balamis never moves from the spot on which it has taken up its habitation, and, indeed, is incapable of any kind of locomotion, yet when very young it was an active, wandering little creature, furnished with jointed limbs, much resembling a shrimp or crab, and swimming freely through the water with a succession of bounds. ^Vhat a complete settling down to quiet ways ! what a thorough transformation is here ! But is it more striking than the metamorphosis of the hobble- dehoy youngster into the sedate sage ? d. Half -Truths and Hemiopia There is an affection called hemiopia, in which the patient can only discern a part or the 144 DICTIONARY OF half of an object. He may see a man walking without head and shoulders ; or with the upper portion of his frame hovering in the air, but no lower limbs to sustain it ; or with a trunk like a mutilated statue ; or with a body which has only a single eye, half a nose, half a chin — appearing, in fact, to be sliced down the center, as if the one moiety were not only divorced from the other but absolutely annihilated. Dr. WoUaston was twice attacked in this manner, and states that he could perceive but half of an individual whom he met, and that on attempting , to read the name of Johnson over a door, he saw only '' son." ^ There is a mental hemiopia. The men who are affected by it are never able to see the whole of any question. They are often emphatic in stating precisely that which they do see, because their vision respecting that is clear enough. These enuncia- tions of theirs constitute the " half-truths " which we so constantly meet witJi in society, in books, and in legislation. Men who are affected with mental hemiopia are, as an almost universal rule, quite unconscious of the fact. The great difficulty in mak- ing them aware of it arises from a strong hallucination which accompanies the disease and assures the sufferer that he is ex- ceptionally strong and perfect in his mental vision. People affected in this way will often declare that they have discovered, and can proclaim, " the whole truth of God," the fact being that they have barely seen half of it. Mental hemiopia is either chronic or acute. The former is incurable. The latter will yield to judicious treatment and the removal of the proximate and exciting cause, which is usually passion, avarice, bigotry, love, or jealousy. p. Hangers=on. — The remora, instead of swimming far by its own exertions, greatly prefers being transported from place to place on ships' bottoms, or even the bodies of sharks. When one of the sharks to which a remora is clinging is caught by a hook, and is pulled out of the water, the little parasite is shrewd in its own interest, for it drops off and makes for the bottom of the ship. As long as a ship remains within the tropics, num- bers of remoras chng to its bottom, whether that be coppered SCIENTIFIC ILLUSTRATIONS. 145 or not, whence they dart off occasionally to pick up any morsels of greasy or farinaceous matter that may be/ thrown overboard, retiring again rapidly to their anchorage Jj: These hangers-on resemble our social ones in the following particulars : they like traveling about ; they do not care what they attach themselves to so long as it suits their purpose for the time.; they will not get along by their own exertions if they can find others to carry them ; they are sharp in their own interests, and know quite well when to desert a supporter ; and they are ready to avail themselves of discarded or accidental aliment. mu. Happiness is Relative. — The PeloncBa corntgata is remark- able as much for its habits as its shape. It is not fixed to any object, but is as motionless as if it were attached to a rock, and seems to pass a singularly unenjoyable existence. Yet it is doubtlessly happy in its own way, though that way is a very strange one. It lives embedded in the mud, its whole body being sunk, and only the ends of the two apertures projecting into the water. The existence led by some men and women seems almost as much at variance with our antecedent notions of a happy life as is that of this Peloticea corrugata. Their sluggish, impassive natures grovel in low pursuits, and never move about among the intelligent currents of human society. No doubt their existence has its pleasures. Happiness is a relative thing. The Peloncza corrugata would find no gratification in the conditions of life which the mackerel enjoys. The delights of a clown would be misery to a sage. c. s. Harmless yet Armed. — The hedgehog is one of the most harmless animals in the world. Unable or unwilling to offend, all its precautions are only directed to its own security ; and it is armed with a thousand points to keep off the enemy, but not to invade him. While other creatures trust to their force, their cunning, or their swiftness, this animal, destitute of all, has but one expedient for safety ; and from this alone it finds efficient protection. As soon as it perceives itself attacked, it withdraws all its vulnerable parts, rolls itself into a ball, and presents nothing but its defensive thorns to the enemyflthus, 146 DICTIONARY OF while it attempts to injure no other quadruped, they are equally incapable of injuring it. One might suppose that the noisy dog with its sharp teeth was more capable of defending himself than this quiet animal, but it is not so. Indeed it is by no means certain that the very defiant-looking creatures are the most in- vulnerable. Quiet men and peaceable nations are often quite as well able to defend themselves as those who swagger about their defensive power. Inoffensiveness does not mean help- lessness, though the cur thinks it does when he essays to worry the hedgehog, and cur-natures think so under all circumstances. A. Harmony where Least Expected. — Before Captain Mau- ry's researches, ocean appeared to the most judicious observers as nothing more than a grand mass of water, inert, passive, obedi- ent to blind and changeful forces. He has demonstrated, how- ever, that there, as in all other parts of the economy of Nature, harmony and order reign ; that everything is planned, weighed, and compensated ; and more, that ocean is endowed with a combination of movements similar to those which nourish life in the plant and the animal ; that it has a circulation, free and regular as that of the blood ; a pulse ever throbbing and beating ; veins and arteries, ay, and a heart ; and that beyond the purely physical causes to which we may attribute this circulation, there exists an essential agent which we should seek in vain else- where, a vital force — that of the myriads of invisible beings which are born, hve, multiply, and die in the teeming womb of its waters. Each of these imperceptible existences changes the equilibrium of the ocean; they also help to regulate the cli- mates of the earth and to preserve the purity of the seas. The principal agents of this circulation are three in number. The first and most apparent is caloric, the solar radiation ; but of itself this would be insufficient. The second and most impor- tant is the salt. The third is the animal life — the " hving infinite of the sea," as Michelet calls it — the infusoria. Truly, as we contemplate this wonderful arrangement we may say, " He divideth the sea with His power." my. SCIENTIFIC ILLUSTRATIONS, 147 Hateful to the Happy, Through the. — Few of our joys are ever reached until we have journeyed through much that is vexing and hateful. To endure the vexing and the hateful, moreover, we often need to think of the goal beyond. Our road is often like that leading to a place named Wady Nassoub, situated a short distance from Sarabit-el-Kadim, on the road from Sinai to Suez. It is gained after traversing Ramleh (" the sandy "), a sandy ravine which serv^es as a retreat for horrible black serpents, both big and little, and for enormous hzards. It is followed by a narrow valley, " Widy Nassoub," one of the most magnificent spectacles in the world. It is a circuit of twenty to twenty-five leagues in extent, surrounded by huge rocks arranged in successive terraces, and of incomparable beauty of form and color. Its arena is an immense sheet of black basalt, furrowed here and there by torrents of yellow sand. A dazzling sun kindles up this landscape, which is one of in- credible splendor. The traveler can now afford to look back triumphantly on the serpents in the valley he has passed ; and as he does so, his position is not unlike that of him who, hav- ing borne himself nobly in the journey of life, and having at- tained a glorious consummation, looks back at the vexations he has passed forever. d. Heads Worth Little, Some If a man lo^es his head, he dies immediately ; but an insect is not nearly so fastidious, and continues to live a long time without any head at all. Indeed there are some insects, which, if beheaded, die not so niuch on account of the head, but of the stomach ; for having then no mouth, they cannot eat, and so die of hunger.'jHAnd some in- sects there are which positively live longer if decapitated than if left in possession of their head. c. o. Health, The Sun a Source of " Where there is sun there is thought." All physiology goes to confirm this. Where is the shady side of deep valleys there is cretinism. Where are cellars and the unsunned sides of narrow streets there is the degeneracy and weakliness of the human race, mind and, body equally degenerating. Put the pale withering plant and human 148 . DICTIONARY OF being into the sun, and, if not too far gone, each will recover health and spirit. i. l. Heavenly Bodies, The Ministration of The. — In Arctic regions the moon and the stars alone temper the darkness of the long winter's flight, and all who have read the story of polar voyages will recollect the thankfulness with which the moonlight is. welcomed. The Arab of the desert steers on emergency by the light and position of the moon. Over the pathless seas the moon is the navigator's friend and counselor, and places within his reach a sure means for measuring the longitude and fixing the spot where the ship may be. ^AVhen we think of the fleets of noble vessels with their wealth of merchandise, and the thousands of lives whose safety is dependent on its teachings, we may form some estimate of the value of this blessing. " Without the moon's aid,'' an astronomer observes, " our ships, instead of fearlessly traversing the ocean from pole to pole, would probably even now be incapable of performing long voyages, and would content themselves with exchanging com- modities and intelligence between well-known and neighboring shores." be. Hereditary Peculiarities, The Transmission of Ten- dencies to particular vices are inherited, and are exhibited in cases where the early death of parents, or the removal of the children in infancy, prevents the idea of any imitation or effect of education being the cause. That the organisation of a thief is transmitted from father to son through generations seems tol- erably certain. Gall has cited some striking examples. And murder, like talent, seems occasionally to run in families. Parents with an unconquerable aversion to animal food have transmitted that aversion ; and parents with the horrible pro- pensity for human flesh have transmitted the propensity to chil- dren brought up away from them under all social restraints. PH. Hereditary Results.— It appears that many habits, phys- ical as well as moral, are to a remarkable extent hereditary; of this we could adduce numerous instances. The hereditary SCIENTIFIC ILLUSTRATIONS. 149 tendency to certain moral or immoral habits in particular per- sons has long been known ; and it has been frequently remarked that the offspring of such individuals share in the same tenden- cies, and are exposed to the same dangers in passing through life. The same hereditary resemblance exists, also, with respect to certain habits of body. Thus if the parents are accustomed to the use of a certain species of aliment, the same will be found to agree with their offspring. Our infants would soon sicken and die if obliged to take the food on which the infants of the Greenlander and Esquimau subsist and thrive. s. Hidden Enemies. — Nocturnal birds of prey fly without making the least noise. They can, therefore, pounce unawares on their victims, seizing them before they have any idea of necessity for escape. AVhen they lay hold of their prey it is immediately devoured. But their large staring eyes cannot bear the light of midday, l^hey therefore remain hidden in their retreats while the sun is high, and do not begin to hunt until the luminary has approached the horizon, when they are able to distinguish with .surprising clearness the objects on which they prey.^ Some of a man's human enemies resemble these birds. They never attack openly in the daylight. They are sly and quiet, and pounce upon their victim before he is aware of their approach, and when surrounding conditions are such as to prevent his being able to defend himself. re. Hideous Implies tlie Dangerous, The There is a close connection between ugliness and vice. Among human beings a hideous expression of face usually implies a wicked person, excepting, of course, in cases where it is accounted for by ill- ness or accident. There are men whose badness is written in repulsive characters upon their complexions, so that any ob- server may avoid them. Not only so. It curiously happens that in some of the creatures whose rage is likely to be fatal to man, there should be something in the physiognomy which puts him on his guard. It is so in regard to the sharks ; it is so in the crocodiles ; it is so preeminently in the venomous serpents.f^ There is in most of these an expression of malignity which well 150 DICTIONARY OF indicates their deadly character. Their flattened head, more or less widened behind, so as to approach a triangular figure ; their wide gape, and the cleft tongue ever darting to and fro ; and, above all, the sinister expression of the glaring, lidless eye, with its linear pupil, are sufficient to cause the observer to re- treat with shuddering precipitancy. Darwin, speaking of a sort ^ of viper which he found at Bahia Blanca, says : " The expres- sion of this snake's face was hideous and fierce ; the pupil con- sisted of a vertical slit in a mottled and coppery iris ; the jaws.were broad at the base, and the nose terminated in a triangular pro- jection. I do not think I ever saw anything so ugly, except- ing, perhaps, some of the vampire bats." 2/ RO. Higher Life Requires tlie Higher Aliment, The. — The air which has once passed through the lungs of a man, and which, in losing four or five percent, of its oxygen, has become charged with three or four percent, of carbonic acid, will yield but very little of its remaining oxygen when again passed through the lungs ; and if this air be breathed over and over again until the sense of suffocation force a cessation, the air will still be found to contain ten percent, of oxygen — that is to say, nearly half of its original quantity.! In air thus vitiated the respiratory process is impossible, but only impossible for warm-blooded ani- mals in health: frogs, reptiles, fish, and moUusks, instead of per- ishing when the air has lost about half its oxygen, continue to breathe and absorb .oxygen almost as long as there is an)' left, ■^pallanzani, Humboldt, and Matteucci have placed this beyond a doubt by their experiments. It is equally beyond a doubt that in the intellectual world also the higher life requires the higher aliment. The conversation which will kindle and sustain all the vitality of a number of weak-minded gossips will cause a man, of intellect to experience a sensation of suffocation. The intellectual atmosphere of some churches and chapels, which is fully adequate to the wants of a certain tepid order of mind, who can exist on the same truth uttered over and over again, is one in which men composed of vigorous brain and warm heart could not possibly exist. Their nourishment can only be de- rived where purity and light abound. ph. SCIENTIFIC ILLUSTRATIONS. 151 Hissing. — As a fact, hissing is the only sound in Nature which makes no echo. If criticism, at the meeting or at the desk, be naught but hissing, and can do naught but hiss, it is altogether a poor affair, and will awaken no echo of sympathy. Therefore an earnest man may ignore it when it assails him in his endeavors to do good. He should go on his course remem- bering the ancient words of Sanai : " What matters it whether the words thou utterest for religion are Hebrew or Syrian, or whether the place in which thou seekest for truth is Jabalki or Jabalsa." G. s. Home Associations, Power of Early. — Early home asso- ciations have a far more potent influence than is generally sup- posed. Some natures, of course, are more susceptible to them than are others, but over many men they have a sovereign power. Nor is their influence confined to the human family. The affection of birds is frequently extended to their own haunts, and they cling with constancy to the place where they were born. Nightingales, swallows, and many othersfind their way back to the spot where their early days were spent, and often to the very nest homes with which their joys were associ- ated. ^ Everybody knows with what fideUty rooks stick to their native trees, and how doggedly they resist every effort to dis- lodge them. Though all the trees of the country are open to their choice, rooks sometimes prefer a nest in a solitary tree in some great city, because it is the home where they were born. For eight months of the year not a bird, perhaps, is to be seen there ; but with commencing spring the constant rooks, wing- ing their way over streets and houses, once more appear and ■ set about patching up the old nest. be. Home Instinct, The. — Swallows {Hirimdo) are celebrated for their migratory journeys. In the early days of spring they^ reach Europe, not in flocks, but as isolated individuals or in pairs. They occupy themselves almost immediately either in repairing their last year's nests, or, if these have been destroyed, in constructing new ones. Among the arrivals are many young birds of the previous year which have not had nests ; and yet it is not a little extraordinary that these, after six months' ab- 152 DICTIONARY OF sence, return with unerring certainty to the old dwelling where hatched. This fact has been too often recorded to admit of any doubt on the subject. This home instinct exists, also, very strongly in some families of men. Though the various members may roam far and wide over the whole surface of the world, they return always to the old birthplace, impelled by an impulse which seems irresistible, and which operates independently of the fact that the companions of the old place have departed this life. RE. Home=Leaving. — When the adult termites of southern America leave their homes they fly off in large clouds, but as soon as they touch the ground they shed their wings, and then they begin to find how many enemies they have. Of the myriad host that pour into the evening air, not one in twenty thousand survives. They have foes above, below, and on every side. The bats and goat-suckers hold high festival on these evenings when the termites are abroad ; and after the insects have cast their wings they are pursued by ants, toads, spiders, and a host of other enemies. Yes, the loss of the home wings is a crisis, not only in the life of the termites, but in that of men. A young man flies off from home with his companions, full of high hopes, and settles himself down, as he thinks, in some suitable place. He is no sooner settled than his troubles commence, j^ When soaring aloft he had no conception of the fact that he was to be at once set upon by enemies and troubles, nor in his home dreams did he suspect their number or their nature. Happy is he if he saves himself from the spiders of the law, the toads- of malice, and the many social grubs who are ready to ruin him. h. Horrible very Arbitrarily Chosen, Emblems of the .Painters always represent their imps as upborne by bats' wings, furnished with several supplementary hooks ; and sculptors fol- low the same principle. In consequence all bats and objects connected with bats are viewed with great horror. It is said that the African negroes depict and describe their evil spirits as white; and that, in consequence, the negro children fly in SCIENTIFIC ILLUSTRATIONS. 153 consternation if perchance a white man comes into their terri- tory. Yet the white man is not so horrid an object after all if one only dare look at him ; and the same remark holds good with the bats. c. o. Hospitality, A Test for. — If the two hands be plunged, one in water at the temperature of 200°, and the other in snow, and being held there. for a certain time are tratisf erred to water of the intermediate temperature of 100°, this water will appear warm to one hand and cold to the other — warm to the hand which has been plunged in the snow, and cold to the hand which has been plunged in the water at 200°. The anomaly is easily explained. The sensation of heat is relative. When the body has been exposed to a high temperature, a medium which has a lower temperature will feel cold, and when it has been exposed to a low temperature, it will feel warm. 2^ow this fact will suggest, by analogy, a way for testing hospitality. It is not uncommon to hear a man speak about the " warmth " of somebody's hospitality. Perhaps that same " warmth " seemed very much like coldness to us. How are we to explain the dif- ference in the sensations of our friend and ourselves ? Simply by remembering that hospitality, like heat, is a relative thing. A man who has just come out of the cold house of Mrs. Nig- gard will feel the tepid house of Mrs. Moderate to be quite a warm, hospitable place. On the other hand, a man who goes to Mrs. Moderate's house after a prolonged stay at the genial mansion of the generous Lady Bountiful, will feel that estab- lishment to be rather chilly in its hospitality. When your friend talks of "warm" hospitahty, you cannot accurately gage his meaning unless you know the temperature of the hospitahty which he has accustomed himself to. ha. Human Body Constructed on Musical Principles, The. — The universal disposition of human beings, from the cradle to the death-bed, to express their feelings in measured cadences of sound and action, proves that our bodies are constructed on musical principles, and that the harmonious working of their machinery depends on the movements of the several parts being 154 DICTIONARY OF timed to each other, and that the destruction of health as re- gards both body and mind may be well described as being put out of tune. Our intellectual and moral vigor would be better sustained if we more practically studied the propriety of keeping the soul in harmony by regulating the movements of the body ; for we should thus see and feel that every affection which is not connected with social enjoyment is also destructive of in- dividual comfort, and that whatever tends to harmonize also tends to promote happiness and health. u. Human Society, An Archetype of. — The picture of a bee-kingdom, which Shakespeare has drawn in the following lines, has the precision of a naturahst, united to the fancy of a poet and the wisdom of a philosopher : " So work the honey-bees, Creatures that by a rule in Nature teach The art of order to a peopled kingdom. They have a king, and officers of sorts. Where some, like magistrates, correct at home ; Others, like merchants, venture trade abroad ; Others, like soldiers, armed in their stings. Make loot upon the summer's velvet buds ; Which pillage they with merry march bring home To the tent royal of their emperor : Who, busied in his majesties, surveys The singing masons building roofs of gold; The civil citizen kneading up the honey ; The poor mechanic-porters crowding in Their heavy burdenis at his narrow gate ; The sad-eyed justice with his surly hum Delivering o'er to executors pale The lazy, yawning drone.'' B. w. Human Sympathy — No part of the world affords a more difficult or dangerous na\'igation than the approaches of our northern coast in winter. Before the warmth of the Gulf Stream was known, a voyage at this season from Europe to New Eng- land, New York, and even to the capes of the Delaware or Ches- apeake, was many times more trying, difficult, and dangerous than it now is. In making this part of the coast, vessels are SCIENTIFIC ILLUSTRATIONS. 15S frequently met by snow-storms and gales which mock the sea- man's strength and set at naught his skill. In a little while his bark becomes a mass of ice ; with her crew frosted and help- less, she remains obedient only to her helm, and is kept away for the Gulf Stream. After a few hours' run she reaches its* edge, and almost at the next bound passes from the midst of winter into a sea.^summer heafi-'JaM'ow the ice disappears from her apparel ; the sailor bathes his stiffened limbs in tepid waters ; feeling himself invigorated and refreshed with the genial warmth about him, he realizes out there at sea the fable of Antaeus and his mother Earth. He rises up and attempts to make his port again, and is again as rudely met and beat back from the north- west ; but each time that he is driven off from the contest, he comes forth from this stream, like the ancient son of Neptune, stronger and stronger, tmtil, after many days, his freshened strength prevails, and he at last triumphs and enters his haven in safety. His experiences bear a resemblance to those of the man who is tempest-tossed upon the sea of social life. This man, struggling in what Shakespeare designates " a sea of trou- bles," has to brave great billows of adversity and to face the chilling blasts of misfortune.- He is well-nigh hopeless and powerless, when he suddenly encounters the warm stream of human sympathy which flows even into society's most icy regions. Under its vitalizing influences the horrors of his de- spair melt away ; his heart glows with renewed hope ; he is nerved with fresh strength for a successful struggle against his calamities, so that he is able at length to accomplish his des- tined purpose. T. Humility, Tlie Fecund Force of. — The little and the lowly may be found in combination with wondrous energy. The coralline (Corallina officinalis], which may be found most abun- dantly on any of our coasts, growing in greatest perfection near low water-mark, is a small plant seldom exceeding five or six inches in height, and not even reaching that size. However, it compensates for its low stature by its luxuriant growth, being usually found in dense masses wherever it can find a convenient '3 6 DICTIONARY OF shelter. If the vital force of this plant had shot upward, push- ing out numerous and majestic branches in the air, and cover- ing itself with abundant leafage and blossom, it would have attracted more attention and admiration, but it would not have gained force, or perhaps usefulness, thereby. Thus with human minds. Those whose powers shoot upward by some .splendid feat of genius in literature or battle, arrest public attention and win public plaudits. AVhereas possibly they neither gain more strength nor achieve more usefulness than those less showy men who work modestly for the common good in the obscurer regions of human life, and who, like the coralline plant, are al- ways accessible to those who seek them at the low water-mark of life's affairs. c. Hypocrite, The. — Would the hypocrite like to behold a creature something resembling himself ? Let him look at the mantis. The insects of the tribe Mantida are principally in- habitants of hot climates, although a few species are common in the south of Europe. The Mantidm move slowly along, and their whole attitude is so solemn that they are regarded with veneration by the inhabitants of all the countries in which they occur. In the south of Europe they are universally known by names indicative of the belief that their singular attitude is one of prayer. All this, however, is purely imaginary. The mantis is one of the most voracious of its class, and only assumes this solemn and devout appearance for the beguilement of its unsus- pecting victim. Slowly and cautiously it steals along by almost imperceptible degrees until within striking distance of its prey, when one of the fore legs is instantly extended, and the strug- ghng victini is soon mangled by the tremendous weapons of the .destroyer.!- These insects are excessively pugnacious, and as is the case with sanctimonious hypocrites, two of them can scarcely come together without a combat. In the case of the mantis the termination of the quarrel is generally fatal to one if not to both of the combatants. Here the analogy unfortu- nately must end, for when hypocrites quarrel, their crafty selfish- ness teaches them how to survive. n. h. SCIEXTIFIC ILLUSTRATIONS. 157 Idiosyncrasy Defies Coercion. — There are persons even in America to whom a mutton-chop would be poisonous. Cases are known where animal food has been poisonous to people. Some persons cannot take coffee without vomiting ; others are thrown into a general inflammation if they eat cherries or goose- berries. Manjr persons are unable to eat eggs, and cakes or puddings having eggs in their composition produce serious dis- turbances in such persons : if they are induced to eat them under false assurances of no eggs having been employed, they are soon undeceived by the unmistakable effects.'^ Only gross ignorance of physiology, an ignorance unhappily too widely spread, can argue that because a certain article is wholesome to many it must necessarily be wholesome to all. Each indi- vidual organism is specially different from every other. How- ever much it may resemble others, it necessarily in some points differs from them, and the amount of these differences is often considerable. If the same wave of air striking upon the tympa- num of two different men will produce sounds to the one which to the other are inappreciable ; if the same wave of light will affect the vision of one man as that of red color, while to the vision of another it is no color at all, how unreasonable is it to expect that the same substance will bear precisely the same rela- tion to the alimentary system of one man as to that of another! Experience tells us that it is not so. ph. Ignorant Bigots. — On entering the Gudarigby Caverns, near the Murrumbidgee River, New South Wales, you will see large numbers of the great-leaved horseshoe bat. If you pro- ceed with torches they will become so eager to escape from your light that they will annoy you exceedingly by flapping against your face in their eagerness to escape into a congenial dark- ness. How much they remind one of those ignorant bigots who, when the torch of truth is carried into the recesses of su- perstition, dash in wild exasperation against the enlightener, and do their utmost to seek intellectual gloom ! ga. Images, Accidental — A colored object being placed upon a black ground, if it is steadily looked at for some time, the eye 158 DICTIONARY Of is soon tired, and the intensity of the color enfeebled ; if now the eyes are directed toward a white sheet, or to the ceiling, an image will be seen of the same shape as the object, but of a complementary color ; that is, such a one as united to that of the object would form white. For a green object the image will be red ; if the object is yellow, the image will be violet. Accidental colors are of longer duration in proportion as the object has been more brilliantly illuminated and the object has been longer looked at. When a lighted candle has been looked at for some time, and the eyes are turned toward a dark part of the room, the appearance of the flame remains, but it gradu- ally changes color; it is first yellow, then it passes through orange to red, from red through violet to greenish blue, which is gradually feebler until it disappears. If the eye which has been looking at the light be turned toward a white wall, the colors follow almost the opposite direction ; there is first a dark picture on a white ground, which gradually changes into blue, is then successively green and yellow, and ultimately cannot be distinguished from a white ground. The reason of this phe- nomenon is doubtless to be sought in the fact that the subse- quent action of light on the retina is not of equal duration for all colors, and that the decrease in the intensity of the subse- quent action does not follow the same law for all colors. But the illusion is very startling ; and it bears some analogy to the occasional remarkable creations of the memory when, in repro- ducing certain events and personages, it presents them in forms somewhat discernible, yet distorted ; similar, yet totally differ- ent ; true to life in outline, yet wholly erroneous in detail. Wonderful, under such circumstances, is the correspondence between the objective truth and 'the subjective reality. Yet the disparity is as tremendous as its existence is unsuspected, where the clearness of the mind's image is mistaken for its cor- rectness. EL. Imitation, The Habit of. — Animals living in societies often copy or imitate the actions of an individual leader ; and among insects this is particularly remarkable with the procession cat- SCIENTIFIC ILLUSTRATIONS. I 59 erpillars, which move more or less in processional order. The procession is always headed by a single caterpillar ; sometimes the leader is followed by one or two in a single file, and some- times by two or three abreast, and the whole train pursues its track thro,ugh every turn and sinuosity without the slightest devjation;fe Wild-fowl, in the various forms they assume in their flight, are led by one individual whose movements direct the flock. An entire flock of sheep following each other through a hedge will often jump when they reach a particular spot be- cause their leaders jumped there, and they do so although the particular obstruction which first rendered the movement neces- sary has been actually removed. In like manner, we constantly see men following leaders, not because they have elected them to be their leader, but because of that strong principle of imita- tion which stirs them to follow. iP^Oj) too, we may observe that '' when one fanatic commences his crawlings over the tree of bigotry, there will always be a procession of fanatics ready to follow him in his peculiar courses. And when the mob has the example of one of the most audacious of its numbers, there is soon a goodly following. The working of the same principle is perhaps more observable in the world of fashion than any- where else. A royal personage, as the result of illness, is obliged to walk with a limp. Forthwith fashionable ladies, the < necessity for the limp being entirely absent, go about limping. - Alexander the Great having a wryneck, it at once became the fashion in a nation of slaves. To-day any little dapper fellow, moving in privileged circles, can, in matters of fashion, rely on the following of a flock of the sheepsheads among us. P. Imitation as a Deceiver's Art. — The natives of South Africa designate the puff-adder ( Vipera inflatd) the Noga-pout- sane or the goat's serpent, because it makes at night a bleating exactly resembling that animal. There were, says Livingstone, certainly no goats in the place where he happened to hear it. The natives suppose that by this bleating it hopes to deceive the traveler, and draw him within its reach. d. Imitation, Ludicrous Effects of. — What ludicrous results i6o DICTIONARY OF may be observed where men imitate with servility the doings of others ! The ambitious young preacher who is setting up as a genius copies the pecuharities in attitude and manner of the popular preacher near him, and causes actual merriment in the very matters in which he thinks he is rnost effective. Tom Snob, the rich soap-boiler, and his corpulent spouse, affect the airs, elegances, and foibles of the aristocracy, and either get themselves into serious difficiilties by the attempt, or at least make a fortimate escape amid the derision of all beholders. ' These folks in their antics are very like those monkeys whose imitative power, Harris says, the Indians turn to destruction in this way : coming to their haunts with basins full of water or honey, they wash their faces in the sight of these animals, and then, substituting pots of thin glue instead of the water or honey, they retire out of sight. The monkeys, as soon as they are gone, come down and wash their faces likewise, and sticking their eyes together, become blind and are easily captured. it In other places they brought boots into the woods, and putting them on and off, left them, well lined with glue or a sort of bird-lime ; so that when the unhappy monkeys put them on, they stuck fast, and hindered their escape. How many men have found it impossible to extricate themselves from corre- sponding difficulties into which they have been drawn through attempting to " swell " it off in the boots of the aristocracy ! p. Impermanence of Life's Forms, The. — Life's forms are forever changing. Not only do individuals perish, but even types. Numberless creatures which once flourished on oiu: earth are. not even represented here now. The dodo will be seen no more; the race has fleeted away. Among birds, the emu, the cassowary, and the apterix are species rapidly van- ishing ; among quadrupeds, the kangaroo, the platypus ; others slowly, but not less surely. After a while, they will be gone from the earth wholly, as bears, woh-es, mammoths, and hyenas have gone from the British Isles. The Bos' primigenus, or great wild bull, was common in Germany when Julius Caesar flour- SCIENTIFIC ILLUSTRATIONS. i6i ished. The race has become wholly extinct, if, indeed, Mt in- corporated with the large tame oxen of northern Eiirope^-The beaver built his mud-huts along the Soane and the Rhone up to the last generations of man ; and when Hannibal passed through Gaul on his way to Italy, beavers in Gaul were com- mon. Thus have animals migrated or died out ; passed away, the balance of life remaining. s. n. Impertinence, The Model of The sparrows are a tame, troublesome, and impertinent generation, and nestle just where you don't want them ; they stop up your stoves and water-pipes with their rubbish, and build in the windows and under the beams of the roof, and would stuif your hat full of stubble in half a day if they found it hanging in a place to suit them. They are extremely pertinacious in asserting their right of pos- session, and have not the least reverence for any place or thing. LA. Impostor, The — If the opossum is surprised by the farmer flagrante delicto it lies down on the ground, counterfeits death, and takes any amount of beating without wincing ; but as soon as the man, thinking that he has killed it, turns his back, the rogue decamps as fast as he can, and regains the forest./fcHow like is this to the sleek sanctimonious impostor ! ,m. Impressions, Distinct and Faint. — The organs of percep- tion are like wax, and outward events are the seals which are stamping impressions. If the organs or faculties of perception, like wax overhardened with cold, will not receive the impres- sions of the seal from the usual impulse wont to imprint it, or, like wax of a temper too soft, will not hold it well when well imprinted, or else supposing the wax of a temper fit but the seal not applied with a sufficient force to make a clear impres- sion — in any of these cases the print left by the seal will be obscure. lo. Impudence Balked by Stupidity — The jackal is most impudent ; but its impudence would be more profitable were it not checked by stupidity. It sometimes happens that a jackal 1 62 DICTIONARY OF Steals silently into an outhouse to seize the poultry or devour the furniture, but hearing others in full cry at a distance, with- out thought it instantly answers the call, and thus betrays its own depredations. The peasants sally out upon it, and the impu- dent animal finds, too late, that something more than impudence is requisite to success. Many men and boys have had to learn the same lesson. If impudence could insure the triumph of their plans, all would be well with them ; but it often happens that Nature, by way of counterpoise to their impudence, has weighed them with stupidity. Society is thereby protected from some of their rascality. a. Incongruous Advantages. — There is a peculiarity atten- ding the constitution of the great water-beetle [Dytiscus margi- nalis) which marks it as a creature especially endowed for the station in which it is placed. Multitudes of insects exist in the larval state for a certain space of time in water ; and having ac- complished a given period in this state, perfecting their forms, they take wing, and become aerial creatures, after which a re- turn to the element whence they sprang would be death to them. But this beetle, when it has passed from the larval state and obtained its wings, still lives in water, and never uses them ex- cept in the case of having to leave one pool for another. It would, therefore, on a superficial view appear to enjoy super- fluous advantages which are incongruous with its position. In this it resembles a large number of persons in the middle and upper circles of human society. We see many of them raised from lower states and endowed with the wings of wealth, prestige, and honor, which should enable them to rise into the azure realms of benevolence and good taste ; yet they never ascend to their possibilities. These advantages are superfluous and incongruous endowments, and in spite of them they remain in their old world of coarseness, sensuality, and selfishness. Libertine Jockey develops into an earl, yet his coronet cannot alter his tastes for the slums ; Rhahab Wanton changes into a duchess, but her instincts direct her to the old ways and haunts. J- SCIENTIFIC ILLUSTRATIONS. 163 Incongruous Combinations. — Mr. Darwin found near Buenos Ayres a shallow lake of brine, which in summer is con- verted into a field of snow-white salt. The border of the lake, like others of the sort in Siberia, is a fetid black mud, in which are embedded large crystals of gypsum three inches long, and of sulphate of soda. " The mud in many places was thrown up by numbers of some kind of wonn. How surprising is it that any creatures should be able to exist in brine, and that they should be crawling among crystals ! " Truly this is an in- congruous spectacle ! Yet human society presents views which are equally incongruent. Men who are in goodness and intel- ligence the very " salt of the earth," are often hemmed in in their narrow grooves of action by that which is morally putrescent. A ring of loathsome law and customs has often surrounded and inclosed saints and martyrs. In the midst of society's basest pollution we often catch a ray of moral goodness, and discover that, like the crystal glittering in the black mud, there are some better elements than first appearances suggested. The presence of worms crawling among pure salt and beautiful crystals is not more unbecoming than the sight of rascals wearing coro- nets, rogues assuming the ermine, and tyrants wearing crowns. N. V. Incongruous Situations. — Neither animals nor men look well in incongruous situations. On the ground the sloths are about the most awkward and pitiable creatures that can well be imagined, for their fore legs are much longer than the hind ones ;■ all the toes are terminated by very long curved claws ; and the general structure of the animals is such as entirely to preclude the possibility of their walking on all fours in the man- ner of an ordinary quadruped. In this, which is an unnatural situation, they certainly appear the most helpless of animals, and their only means of progression consists in hooking their claws to some inequality in the ground, and thus dragging their bodies painfully along. But in their natural home, among the branches of trees, all these seeming disadvantages vanish. It is obvious, therefore, that when the sloth is not in the trees he is in an 164 DICTIONARY OF incongruous situationrjT And what a lesson his absurd position there should be to us not to make ourselves ridiculous by ap- pearing on scenes where we can only exhibit our incapacity, and evoke either the pity or laughter of mankind ! A man with an inapt, injudicial mind, presiding on the bench of jus- tice and performing his functions under the inspiration of a bad heart and an uneven temper, is a spectacle whose incongruity equals that presented by the most clumsy sloth that ever ambled out of its element. Monstrously incongruous, too, is that other spectacle, of a man who has a jockey's tastes and bulldog's nature, stalking down to the gilded chamber occupied' by the highest wisdom in England, for the purpose of displaying him- self as an hereditary legislator ruling a free people. Poor awk- ward sloth ! dragging yourself in unhandy fashion over the ground along which you were never intended to travel, you may be a sad illustration of a creature in an incongruous posi- tion, but you are not the most laughable one. These men dis- pute with you the prize for being the most ridiculous, n. h. Inconsiderable Creatures, The Strength of The strength of some creatures, especially insects, considering the smallness of their size, is in several instances prodigious. The strength of the black ants is manifested by the quantity and magnitude of the materials which they cellect for their heaps ; but the common little red ant {^Formica rtifa), a much smaller creature, gives daily proofs of its abilities to remove heavy sub- stances equal to any that we meet with. One of these htlle creatures, thirty-six of which only weigh a single grain., has been seen to bear away the great black fly as its prize, equal to a grain in weight, with considerable easelfehd even the wasp, which exceeds forty times its own weight, will be dragged away by the labor and perseverance of an individual emmet. Learn from these facts not to estimate the strength of things by mere reference to their material magnitude. One very little man like Pope may possess poetic power to shape a nation's literature. One hero, not six feet high, may create a kingdom or overturn it. J. SCIENTIFIC ILLUSTRATIONS. 165 Industry over Adversity, The Triumph of. — Nothing is more absurd than to throw up the hands in wild despair, or to sit down in sullen despondency, when calamity overtakes us. The remedy for the evil is work — hard, earnest work. Let us " go to the ant ; consider her ways, and be wise." " When,'' says Mr. Frederick Smith, "the habitations of the ants are by any means injured or destroyed, no time is lost in useless de- spair ; one spirit animates each individual ; simultaneously they set to work to repair their misfortune ; unceasingly they labor ; nothing damps their ardor or abates their industry, until, as if by a magic wand, their habitation again rises to its former height and beauty, and all trace of ruin has disappeared." mu. Inexplicable Beauty. — The crimson topaz (Topaza pelld) is a bird of magnificent beauty, but curiously enough, although it is bedecked with resplendent hues which seem to need the priesence of daylight, and to be made expressly for the purpose of reflecting the brightest beams of the sun, yet the lovely bird is one of the night wanderers, being seldom seen as long as the sun is above the horizon, and preferring to seek its food while the world is shrouded in darkness. yThe sea-mouse, too, whose iridescent garment possesses all the tints of the rainbow, is also a darkness-lover, and passes its life sunk in the black mud of the sea-shore. Here, therefore, we have two instances of inex- plicable beauty. " Beauty which is not explicable is," says a great thinker, " dearer than a beauty which we can see the end of." Certainly in Nature we never see the end of it. It is ever coming upon us as a new surprise. It is an eternal symbol. H. Inexplicable Services. — The most singular species of all the white ants is' that of the parasol ants of Trinidad in the West Indies, which walk in long procession, each carrying a cut leaf over its head, as a parasol in the suft, and these they de- posit in holes ten or twelve feet under ground, apparently with no other object than to form a comfortable nest for a species of white snake which is invariably foimd coiled up among them or digging out the deposit. What regard they can have for 1 66 DICTIONARY OF this snake, or why they should render him any service, is quite a mystery,3fas also are the acts of men who have bequeathed vast wealth to rich people whom they have never seen and who never did them any good. Such proceedings rank among the inexplicable services of the world. i. l. Infernal, Earth's Hints of the. — Beauty, says Akenside, was sent from heaven, the loving mistress of truth and good to this dark world. And beauty gives us many a splendid picture in every chme and on every shore, which, suggests a glory yet to come, a paradise elsewhere. But there are in Natiu'e many scenes over which beauty does not preside — views which are overshadowed by appalling forms, colored with awful hues, and portraying the huge, the poisonous, the hideous, moving in hor- rible and stupendous combination around abyssmal depths, or on plains vast and terrible in their gloomy grandeur. Look where the densely leaved cypress of the New World grows in company on the plains of California, Louisiana, and Virginia, forming extensive forests. There with the tree of some thou- sand years — in some instances the age has been computed at four thousand — the grandeur becomes a demoniac power. As yet, says Dr. Herman Massius, no ax has thinned these aborig- inal wildernesses, no skill drained these moors abounding in terrors, and which have been denounced under the name of cypress swamps, described by Sealsfield with such terrible and lively coloring. Gigantic trunks, more than three hundred feet" in height and of unheard of strength, crowd close together, en- twining their branches, and spreading even over the brightest day the obscurity of night ; so that the foot which penetrates hither can only venture its timid step by the gleam of torches. Blocks of stone and half-rotten trunks of trees, piled up in wild confusion, rise from out the bottomless mire. Here alligators, serpents, and the biting tortoise lie in ambush, the sole lords of this frightful pool, reeking under the burning heat of an almost tropical sun.^\ Such is the aspect of things in sum- mer ; while in spring the thick and muddy waters of overflow- ing rivers pour tumultuously for miles over this ungenial vege- SCIENTIFIC ILLUSTRATIONS. 167 tation. With our eye upon a scene like this, may we not say that, though the world possesses many emblems of paradise, it also has some which are, at least, hints of the infernal ? ST. Influence Lost in Form but not in Force. — The Ama- zon, the River Plata, Orinoco, Mississippi, Zaire, Senegal, In- dus, Ganges, Yangtsee, or Irrawaddy, etc., etc. — these, and such like stupendous rivers, extend their influence to a considerable distance from the coast, and occasionally perplex and delay the navigator in open sea, who finds himself struggling against a difficulty, wholly unconscious of the cause. The River Plata, at a distance of six hundred miles from the mouth of the river, was found to maintain a rate of a mile an hour ; and the Ama- zon, at three hundred miles from the entrance, was found run- ning nearly three miles per hour, its original direction being but little altered and its water nearly fresh. We are reminded by this of other influences which also lose their form but not their force. Though the man dies, his influence still lives.TrHe no longer acts upon the world in the capacity of public speaker, writer, or statesman, but his influence has gone forth and joined the great ocean of thought. The sect or party changes its form and loses its individuality, but its influence has gone forth and is felt in the current of opinion. All the separate and distinct influences of men and sects become universahzed in the great sea of eternity. ma. Injured but not Destroyed — Though your attempt to de- stroy a man's position may fail to accomplish that object, it may be productive of serious injury to him. Yet, fortunately for him, that very injury may afterward bring forth good results. His friends may rally round him ; his resources may be added to through the medium of the sympathetic ; or he may be so acted on as to put forth power from within which develops new graces and fresh vigor. You injure a tree, and you will discover rep- aration is at work even there. The wheel of your cart, for in- stance, grazes the trunk, or the root of the tree is wounded by your passing plowshare ; the result is, an adventitious bud comes. Wherever you see those adventitious buds which come without 1 68 DICTIONARY OF any order, you may recollect that their formation is frequently thus produced, by the irritation caused by injury JJ'Tou cut down the heads of a group of forest-trees ; you have not de^- stroyed them. Like the men you have injured, they live to tell the tale. The pollarded dwarf remains to declare what the forest-tree would have become but for you. Even the date of your attack can be ascertained ; for the stunted group will cover themselves with branches all of the same age and strength, which will exhibit to the sky the evidence of the story : in- jured these all are ; yes, but not destroyed. v. Injured, The Persecution of the. — It is a strange fact that both animals and men enter heartily into the persecution of the injured. The motive which induces animals to attack and even destroy the wounded and disabled of their own species arises from an impulse which certainly is not easily, defined ; but it is clear the deed is perpetrated, and that under feelings of the most intense hatred. When a wolf or hyena is womided, its companions instantly tear it to pieces and devour it ; and among domestic dogs, the persecuted, defenseless cur, yelping in its flight from the brutality of the idle urchins in the streets, is chased and worried by every dog within hearing of its dis- tress. There exists an instinctive repugnance to everything which cannot defend itself. IfThe motive which permits men to attack or neglect those who are disabled is also impenetrable. But the sad spectacle is sometimes seen ; and the man who is in search of protection from a horde of persecutors goes from one man to another for aid only to be snapped at, cuffed, brow- beaten, and snubbed. p. Injured, The Recuperative Powers of the — Like many other beings that occupy a very low position in the animal king- dom, the starfishes have a very great power of reproducing lost or damaged members. It is a common thing to find specimens of this very species with only three rays, and sometimes a five- finger starfish ( Uraster riibeiis) is found with only one ray com- plete. Now the fisherman, either ignorant of their reproductive powers, or faihng to draw a just inference from his knowledge. SCIENTIFIC ILLUSTRATIONS. 169 has a custom of tearing the starfish in two, and throwing the pieces back into the sea. The consequence is, that the two halves become two individuals, and the fisherman has only doubled the power of his foe instead of destroying it. itFroni these facts persecutors might learn a very useful lesson. The creatures they wantonly injure have a recuperative power which is not taken into adequate consideration. All history will attest this fact. When inquisitorial and brutal " fishers for men " have been sent forward by despots, who have desired to break up religious sects and destroy pohtical parties, it has never been properly understood that the very means for extermination which have been adopted have been the very ones which would muU tiply the power of those whom these scoundrels intended to in- jure. Tyrants may exert their utmost force against their humble enemies,, and find, too late, that they have multiplied in conse- quence of it. The recuperative power has come into work, and multiplication has joined it. F. Injurers, Unconscious. — The little boring wood-beetle at- tacks books, and will even bore through several volumes. An instance is mentioned of twenty-seven folio volumes being per- forated in a straight line by one and the same insect, in such a manner that by passing a cord through the perfect round hole made by it the twenty-seven volumes could be raised at once. It also destroys prints and drawings, whether framed or kept in a portfolio. These poor insects have no conception of the value of the things they may destroy. Any common trash of closely packed paper would suit them just as well ; but in their igno- rance they are destroyers of that which is of value to the world. ;«i They have their imitators among humanity. There are dull men in societies who nibble away in their petty line of action until the program of the entire institution is defaced. There are others in churches and chapels, who, boasting that they " will go straight," bore their petty lines of attack even through the most beautiful of spiritual designs. There are women in households whose narrow spirit blemishes the entire glory of home. All of these creatures belong to the class of beings who 170 DICTIONARY OF in asserting their own rights destroy that which is valuable with- out even knowing that they are so doing. i. o. Injuries, The Propagation of Postliumous. — The alK- gator lays her eggs in some secluded place in the sand, on the banks of a river ; or else in some places, such as the neighbor- hood of Cayenne and Surinam, she buries them under a kind of mound raised by the collection of damp leaves and herba- ceous stems. She departs altogether, and then, without any further assistance from her, the eggs get hatched ; in the first tase by the solar rays, and in the other by fermentation and the increase of temperature. It does not matter if the parent dies. The infant alligator is sure to be hatchedirin the archives of solicitors' offices we have found that the mind of man often propagates its ideas upon a similar general principle. They look harmless, are wrapped up in inoffensive form, and put out of sight for a time. But, as in the case of a will, the day comes when the little ideas have to see the light, and they soon come forth panoplied in all the strength of their base progenitor. They live and work their mischief for generations, and again propagate themselves as curses to families whom the parent alli- gator mind had never seen. Like the reptile, the mind of man possesses the capacity for propagating posthumous injuries upon the world. re. Innovation without Destruction. — You say you hate in- novation, are afraid of it ; it is destructive. Ask your gardener to explain how he effects an innovation with which you are always pleased but never are afraid of. He will show you a trunk of a tree cut through horizontally, with a vertical cleft made in its center some inches deep. Into this cleft the branch of a graft with several buds, and cut to the shape of the cleft, is inserted, which is closely in contact with the sides of the cleft. The cleft is then covered with mortar of some kind, and bound firmly together by means of cord. He will tell you that cleft- grafting is operated successfully both on the trunks and roots of your trees. Horticulture has instructed him how, by this means, to change with advantage the products of trees of the SCIENTIFIC ILLUSTRATIONS. 171 same species, making the head bear fruit and flowers other than those belonging to the principal stem. In fact he restores the vigor and/ sweetness of youth to a tree already aged and ex- hausted^ls not this operation innovation without destruction? Nay, more, is it not innovation effecting actual improvement ? Now in society there are many old institutions like that trunk of a tree of yours and those stumpy roots. They have flour- ished out their day, are now nearly efi^ete. But they have just enough vitality to. supply to a new principle all that. that new principle requires in order to make it grow in men's esteem and bud and blossom like the rose. You do not want the old institution removed : you do not merely desire it to cumber the ground in its present melancholy barrenness to tell the tale of better days. The perpetuation in inelegance and uselessness of the worn-out forms of once beautiful growths cannot be a very sacred duty when it is obvious that by a little proper man- agement, and a judicious grafting of new life upon them, they may be made to flourish with new glor)-- and produce new bless- ings for a thousand years to come. Learn a lesson from the garden, and let the sweet odor of your grafted roses and varied flowers and blossoms waft to your appreciative soul softened and refined feelings concerning the ugly word " innovation." v. Inquisitiveness Punished. — How actively inquisitive are some people ; and* into what strange predicaments does this their strong propensity land them ! They remind us of the crested anolis {Xiphosurus velifer), a species of the lizard tribe. It is. a timid yet restlessly inquisitive animal ; for although it hides itself with instinctive caution on hearing the approach of a foot- step, it is of so curious a nature that it must needs poke its head out of its hiding-place, and so betray itself in spite of its timid- ity. ii^So absorbed, indeed, is the anolis in gratifying its curiosity, that it will allow itself to be captured in a noose, and often falls a victim to the rude and inartificial snares made by children. IL. Insensibility Mistaken for Safety. — The "oyster-catcher" birds, if pursued, hide their heads in the first hole they come 172 DICTIONARY OF to, as if thinking, like the ostrich, that if they cannot see you, you cannot see them, f hi. Insignificant, The Mightiness of the. — The debris of the Infusoria, which may be called the world-makers, are discovered in prodigious quantities among the remains of the primitive creation. The name Infusoria has been given to them be- cause they were first observed in liquids holding in dissolution or in infusion putrescible matter. The accumulated spoil of these infinitely small organisms constitutes a notable part of the solid crust of oiu' globe ; and we ourselves are eye-witnesses of the phenomena of continual reproduction and destruction by which they made ready, at the epoch of the ancient geological formations, the habitation of man. According to Ehrenberg, a cubic inch of the Tripoli sand, which is still in course of for- mation in the environs of Bilin, in Bohemia, contains eleven millions of the shells of the infusorias which produce this friable substance. The same naturalist states that, so great is their power of reproduction, one million of these animalcules are born in ten days of a solitary individual. Bearing these facts in mind, it is not difficult to understand what immense masses of matter must have been deposited by the innumerable generations which have succeeded one another during the long periods of the primitive epochs, and which have covered with accumulated strata, mingled with sedimentary earths, the rocks of igneous origin that formed the first crust of the earth.F^The fossil debris of such shells as ammonites, nautih, and nummulites, are also found in vast masses, which sufficiently indicate the infinite multiplication of life in the dense warm waters of the primeval seas. The illustrious geologist. Dr. Buckland, affirms that the nummuhtes form a considerable portion of the entire mass of several mountains ; as, for instance, the tertiary calcareous de- posits of Verona and Monte Bolca, and the secondary stratified earths in the cretaceous formations of the Alps, the Carpathians, and the Pyrenees. The famous colossal Sphinx, and the hugest of the Egyptian pyramids — that which is generally distinguished by the name of Cheops — are constructed of a limestone wholly SCIENTIFIC ILLUSTRATIONS. 173 composed of these Foraminifera, which are everywhere widely distributed, and which, by their countless legions, seem to have sought a compensation for their extreme diminutiveness. " The sand of the sea-shore,'' says Dr. Chenu, " is so filled with Fora- minifera that one may justly say it is half composed of them. In an ounce of sand in the West Indies were nearly four millions of individuals. The banks formed by these beings impede navi- gation and render it dangerous, obstruct the gulfs, fill up the harbors, and in conjunction with the madrepores construct those islands which from time to time emerge in the warm regions of the great ocean ; and this role, actually played out to-day by living species, was formerly filled by those which are now found only in a fossil condition. At the epoch of the coal-measures (or carboniferous formation), a single species of Fusulina built up in Russia enormous beds of limestone. The ^ cretaceous deposits reveal an immense quantity in the white chalk that extends from Champagne into England. Finally, in the tertiary formations of numerous localities, and especially in the environs of Paris, the limestone grit incloses an infinite num- ber ; and it has been calculated that a cubic yard of this stone, excavated from the quarries of Gentilly, contained more than three millions of individuals. Paris, as well as many neighbor- ^ ing towns and villages, is almost wholly built with these Fora- minifera. Thus, then, animals hardly perceptible to the unas- sisted eye change to-day the depth of the waters, and have, at various geological epochs, filled- basins of a considerable area. This fact shows us that each animal has its allotted task, and that with time — time of which Nature takes no count — the ani- mals which appear to us so contemptible on account of their smallness might change the aspect of the globe." ^' my. Instinct. — The operations of instinct are unvarying. The ant and the hen act now as they acted in the days of King Solomon, and are incapable of altering their course of action. "What can we call the principle," asks Addison, "which directs every kind of bird to observe a particular plan in the structure of its nest, and directs all the same species to work after the 174 DICTIONARY OF same model ? It cannot be imitation ; for though you hatch a crow under a hen, and never let it see any of the works of its own kind, the nest it makes shall be the same to the laying of a stick with all the other nests of the same species.-#~It cannot be reason ; for were animals endowed with it to as great a de- gree as man, then buildings would be as different as ours accord- ing to the different conveniences that they would propose to themselves." The .young crocodile or alligator, on issuing from ■ the egg, is drawn toward the nearest water. It wiU even pro- ceed in a direct line for the stream, just as if it had been there many times before, and was perfectly acquainted with the ground/Jp'So it is with the young of turtles. The turtle, though a ^marine animal, goes on shore to lay her eggs and make a nest for them in the sand. Yet no sooner do the little turtles come forth from their shells, and peep over the surface of the sand, than they commence a direct line of march toward the sea, mak- ing no stop till they reach the water's edge ; and it is observed, says Humboldt, that though they may have burst the shell of the egg during the day, they are never known to come forth from the nest but at night ; so that they are not assisted by day- light to find their way to the deep. Experiments have been made on the young, says the same writer, by putting them into a bag, carrying them to some distance from the shore, and then letting them out with the tail turned toward the water, but it is always found that they turn about, and take without hesitation the shortest way to the beach, apparently discriminating on which side the air is most humid. J r. Instinctand Somnambulism'. — Working-bees, says Cuvier, have since the beginning of the world constructed the most in- genious edifices, agreeable to principles of the highest geometry, and destined to lodge and nourish a posterity which is not even their own. Solitary bees and wasps also form very complicated nests for their eggs. From the egg there springs a worm, which has never seen its mother, which does not know the structure of the prison in which it is inclosed ; but when once it is changed into a wasp or bee it constructs a similar nestjjequally perfect, SCIENTIFIC ILLUSTRATIONS. 175 for its own egg. We cannot form a clear idea of instinct but by admitting that the animals endowed with it have, in the sen- sorium, continued innate sensations and images, which deter- mine them to act like sensations received through the organs of sense. Instinct is a kind of dream or vision that perpetually haunts them and prompts them to action ; and in everything that respects their instinctive notions we may regard animals as a kind of somtiambulists. S. Instinct, The Prognosticating. — Great are the advantages which are possessed by that man who is blessed with the prog- nosticating instinct ; for thereby he is enabled to observe the signs of the times, prepare prudently for the things which are looming in the future, and to be ready to perform his part dis- creetly, when the man who is not similarly endowed is in all the tumult of surprise and confusion. But this instinct is not con- fined to man ; it has a far wider range. And the individual who has not yet seen the advantages of being ready in season and out of season will do well to investigate this matter. He will be surprised at the state of constant preparedness in which even creatures far inferior to himself are to be found. The actiniae throw out their feelers and expand themselves when a continuance of fine weather is to be expected, but withdraw and contract themselves, even in a room, when a change is im- pendiiig.^(fhe mussels, before the approach of a storm, spin several new threads to secure their hold on the rocks ; and leeches rise to the surface of the water before rain. Spiders enlarge their webs during fine weather, but spin only short threads, work seldom, or hide themselves in corners during rain.r^ Many beetles, by their active flight and humming sounds, give tokens of the morrow's brightness. Before rain, bees re- main either in their hives or in the neighborhood of them ; and ants convey deep into the hills the pupse which they expose to the sun in fine weather. If the atmosphere be lowering in the morning, pigeons feed rapidly, and return to their cots, and the hare hides itself ; but the mole comes to the surface of the ground, and the squirrel seeks its nest and shuts its entrance, | d. 176 DICTIONARY OF Instinct Unsubmissive to Argument. — You may make your position logically perfect, and your hearer may admit it to be so ; but it does not follow that either of your minds is so influenced thereby that your feeling in regard to the subject-mat- ter will be changed. Take the case of our aversion to reptiles. Strange, grotesque, and oftentimes most repulsive in appearance, though sometimes adorned with the brightest tints, the reptiles excite an instinctive repugnance in the human breast ; and whether it be a lizard, a snake, or a tortoise, contact of one of these beings will cause even the most habituated to recoil from its cold touch. Now you may argue that many of these rep- tiles are quite harmless, and some of them handsome, and that, therefore, our repugnance cannot be entertained. But the fact remains, that when all argument has ceased there is a universal disgust and even horror cherished by men in regard to reptiles. Their instinctive dislike is unconquered by reasoning. ^ il. Instinct, Errors of With respect to instinct, it is impor- tant to observe that animals not infrequently make very curious mistakes. For instance, flies have the instinct of depositing their ova in places where they shall have plenty of food when they arrive at the maggot state, and hence they generally de- posit them on flesh, particularly if it happens to be somewhat tainted. Now there are certain species of flowers (as, for ex- ample, the Raffiesia Arnoldi, which is a native of Sumatra, and grows to an enormous size) which have a smell of carrion ; on these the flies, deceived by their instinct, deposit their eggs, 1 which, when they become maggots, perish from want of food. J^ The same thing occurs in the case of the Musca voinitoria with respect to various species of Phalli and Agarici, which possess much of the odor of dead flesh, leading to similar mistakes. s. Instinct, The Errors of the Maternal Ducks' eggs are often put under a hen to be hatched. When seeking her food, the hen sometimes leads her little flock to the edge of the water, and gives them a glimpse of its dangers. But the ducklings, impelled by instinct, rush into the element they are most par- SCIENTIFIC ILLUSTRATIONS. \11 tial to. The poor mother, anxious for the fate of the young giddy-pates, which she loves as her own offspring, utters cries of terror. She would resolutely throw herself into the stream and perhaps get drowned were she not soothed by seeing them swimming about happy and active.^ In the present age when domestic chivalry often runs mad, we are accustomed to hear the maternal instinct represented as divinely right. Here is an instance which points in a contrary direction. The hen hatches eggs in mistake which do not belong to her own order ; and when her ducks desire to act as ducks ought to act, she would fain prevent them. Her foolish solicitude is in fact eager to denaturalize them. She is a good illustration of the simpering mothers who preside over the destinies of some men's children. The chief energies of such women are directed to check the enterprise of the little ones, to conventionalize them, and to render them chicken-hearted. re. Instinct at Fault, The Maternal — The maternal instinct does not always bring forth the fruits of love, and practise the deeds of self-sacrifice and tender care. In its perverted form it abandons the helpless one who looks to it for protection. The instances of such perversion are not rare. Father Ripa, writing about this subject in China, says that in that vast em- pire there is nothing unusual in the spectacle of children aban- doned by their mothers. Indeed it occurs daily. When mothers are poor and have large families, or observe any defect upon the body of an infant, or any indication of an illness likely to become troublesome or expensive, they cast away the little creature without remorse, f^his cruel custom is also practised by unmarried women who have children, and especially even by the members of a sect called Necoo, who pretend to live in spotless chastity. The poor infants are secretly thrown into a river, or left near the public road, even though it is well known that in most cases they will be devoured by wild beasts, me. Instincts, Opposing. — Two instincts having different ob- jects sometimes become opposed to each other, and under these circumstances the stronger always prevails. This is not uncom- 178 DICTIONARY OF mon among swallows, which have been frequently observed to build their nests at a late period of the season, and near the time when they make their usual migrations from this country. Here the young ones are hatched too late, and the instinct to migrate being stronger than that which prompts them to cher- ish their young, the latter are forsaken, and perish for want of food. s. Instincts in Unexpected Forms, Social Social instincts, and even noble traits, are not confined to mankind. We find them in strange places and in unexpected forms. Look at the walruses, for instance ; the social instincts with them are most powerful, and they fight for one another with a courage and an obstinacy that their strength and formidable weapons render frequently fatal to the hunters. Frequently the walruses lie in great numbers along the banks of the ice, motionless, and piled pell-mell one upon another. But one of ,them, during their re- pose, enacts the part of sentinel. At the slightest appearance of danger it precipitates itself into the waten"-; All the others imme- diately attempt to follow; but in this critical moment the slow- ness of their movements sometimes produces the most grotesque scenes. In the confused state in which they have been lying, it is with difficulty they disengage themselves from the masses of heavy flesh which inclose them on every side. Some roll awkwardly into the water ; others crawl painfully along the ice. The weight of their body and the enormous disproportion of their limbs render all movements upon the ice extremely diffi- cult for them. But as soon as these ungainly animals are in the water, they resume all their vigor, and, if attacked, defend themselves with astonishing courage. At times they themselves begin the fight ; they dart upon the fishermen's boats, seizing the gunwales with their long hooklike teeth, and draw them furiously toward them. At times they glide under the skiff, and endeavor to capsize it. Their hardy, scaly skin resists the blows of pike and spear, and it is neither without difficulty nor danger that the poor fishermen escape from such formidable adversaries. In these desperate combats the walruses are gen- SCJEXriFIC ILLUSTRATIONS. 179 erally led by a chief, who is easily recognized by his great size and impetuous ardor. If the fishermen succeed in killing him, at that instant all his comrades abandon the struggle, gather around him, support him, by means of their teeth, on the sur- face of the water, and drag him in all haste far from the attack- ing boats, and out of peril. But the most impressive and dra- matic scene is when the walruses fight to secure their young. Generally they attempt to deposit them on a bank of ice, in order that they may fight more freely. If they have not suffi- cient time to place them in safety, they take them under their paws, clasp them to their breast, and throw themselves with des- perate audacity against the fishermen and against their boats. The young walruses exhibit a similar devotion and a similar intrepidity when their parents are in peril. They have been known, when placed apart in security, boldly to quit the asylum chosen for them by anxious affection, and take their share in the struggle in which the mother was engaged, to sustain her efforts and participate in her dangers. It is not uncommon for us to boast that the family solicitude and regard for each other's interests which we frequently see in American homesteads are the result of our civilization. No doubt civilization refines and ele- vates whatever it touches, but it is certainly entitled to very little credit in this matter. The care which the individuals of certain species take of one another is a simple instinct of their nature, for which they are no more entitled to credit than they are for eating when they are hungry or sleeping when they are sleepy. A parent walrus cannot be supposed to think of merit when she protects her young, any more than the young walrus thinks of merit when defending its parents. But how often, when services are performed by human parents for their chil- dren, or by children for their parents, it is considered on all sides that something quite meritorious has been accomphshed! Let us rather say, on such occasions, that instinct has asserted her beautiful and simple swa)'. Nor would it be out of place to remind those parents and children who refuse to render to each other the services which Nature has imposed upon them, ISO DICTIONARY OF that the walrus has a lesson for them. Let them in utter abase- ment turn from their worldly moralities, logical quibbles, and human selfishness, and gaze toward the Northern seas on those heroic tragedies of the parents and children of a species stirred and directed by the impulses of Nature only. my. Insusceptible Character, The. — Amid the tribes of insects, so particularly influenced by seasons, there are a few which appear little affected by common events. The brown meadow- butterfly [Papiliojanira], so well known to ever)' one, is never missed in any year ; and in those damp and cheerless summers, when even the white cabbage-butterfly is scarcely to be found, . this creature may be seen in every transient gleam, drying its wings and tripping from flower to flower with animation and life, nearly the sole possessor of the field and its sweets.-/ It is a happy emblem of the insusceptible man, who, whatever may be the sorrows and agitations of the period, is never dejected or depressed. Although the gloom of death and wretchedness may be all around him, and many of his fellow-creatures may be unable to face the pitiless circumstances of the day, he is jaunty and jolly, vivacious and able to enjoy his usual dehghts and avocations. Nature fortunately gave him the brown-but- terfly temperament. j. Interchange, The Principle of. — Nature is against exclu- siveness. It is part of her plan that there shall be everywhere mutual giving and taking. You may observe this even in the tides. The tidal currents are perpetually shifting and redistrib- uting the deposits along the sea-bottom ; the Gulf Stream is as regularly transporting tropical products to temperate regions ; and the Polar currents carry with them icebergs and ice-floes laden with rocks and gravel, which are dropped on the sea-bot- tom as the ice melts away in warmer latitudes. Reciprocity is everywhere. ad. Interdicted Political Convictions. — M. Fournet, in his de- scription of the metalliferous gneiss near Clermont, in Auvergne, states that all the minute fissures of the rock are quite saturated with free carbonic-acid gas, which gas rises plentifully from the SCIENTIFIC ILLUSTKATIOiVS. 161 soil there and in many parts of the surrounding country. The various elements of the gneiss, with the exception of the quartz, are all softened, and new combinations of the acid with lime, iron, and manganese are continually in progress. Another illus- tration of the power of subterranean gases is afforded by the Stufas of St. Calogero, situated in the largest of the Lipari Islands. Here, according to the description pubhshed by Hoff- mann, horizontal strata of tuff, extending for four miles along the coast, and forming cliffs more than two hundred feet high, have been discolored in various places, and strangely altered by the "all-penetrating vapors." Dark clays have become yellow or often snow-white, or have assumed a checkered or brecciated appeararice, being crossed with ferruginous red stripes. In some places the fumeroles have been found by analysis to consist partly of sublimations of oxide of iron ; but it also appears that veins of chalcedony and opal, and others of fibrous gypsum, have resulted from these volcanic exhalations. M. Virlet gives an account of the corrosion of hard, flinty, and jaspideous rocks near Corinth by the prolonged agency of subterranean gases, and Dr. Daubeny describes the decomposition of trachytic rocks in the Solfatara near Naples, by sulphureted-hydrogen and muriatic-acid gases. Although in all these instances we can only study the phenomena as exhibited at the surface, it is clear that the gaseous fluids must have made their way through the whole thickness of porous or fissured rocks which intervene between the subterranean reser\'oirs of gas and the external air. The extent, therefore, of the earth's crust which the vapors have permeated and are now permeating may be thousands of fathoms in thickness, and their heating and modifying influence may be spread throughout the whole of this solid mass. We learn from Professor Bischoff that the steam of a hot spring at Aix-la-Cha- pelle, although its temperature is only from 133° to 167° F., has converted the surface of some blocks of black marble into a doughy mass. He conceives, therefore, that steam in the bowels of the earth, having a temperature equal to or even greater than the melting-point of lava, and having an elasticity of which l82 DICTIONARY OF even Papin's digester can give but a faint idea, may convert rocks into liquid matter. These wonderful facts might suggest useful thoughts to the despots of the world. Despotism inter- dicts the expression of political convictions, and seeks to bury them imder the adamantean weight of oppressive decrees and colossal cruelty. But it is an unerring moral law that the warm aspirations of a virtuous people shall — like the subtle subter- ranean gases — arise to freedom, and, despite all impediments, dissolve in due time even the hard and hoary foundations of injustice. e. Invaders, The Callousness of Thievish — The death's- head moth {Acherontia atropos) is a thievish invader. It makes its way into beehives in order to steal the honey, of which it is excessively fond. Like other thievish invaders, it is utterly callous. It is to no purpdse that the bees dart their stings at the intruder ; they only blunt them against its thick skin, and soon, terrified at its presence, disperse on all sides. We are too apt to applaud military invaders when they are successful in enrich- ing themselves. We award them glory for their brave inclu- sions into other people's territory. Possibly in many cases it will be discovered that the defensive army was, like the bees, unequal to a vigorous resistancejj^nd that what was called the bravery of the invaders was nothing more than the exhibition of that natural callousness with which, like the death's-head moth, many thievish invaders are endowed. Nature has made creatures which do not feel even a just sting. The death's-head moth is impervious to the righteous punishment of the bee. Thievish invaders are inaccessible to the stings of conscience. I. Invariable, Nothing. — There is no body or part of a body whose existence can be termed invariable. Where\'er in the material world anything seems to be unchanged, whether it is in reference to its situation or its internal condition, this inac- tion is only apparent, as the hour-hands of a clock appear to be stationary when we take a cursory glance at them. J This is, SCIENTIFIC ILLUSTRATIONS. 183 however, but a feeble simile when we speak of changes which are hardly perceptible in the course of many thousand years. so. Invisible may yet be Legible, The. — When, a generation since, the remnant of English troops left after the then disasters at Cabul were shut up in a fort, surrounded and vigilantly watched by their enemies, they managed nevertheless to send brief letters to their nearest friends. These letters to appear- ance were only blank pieces of paper. But they were covered with words traced with rice-water instead of ink, every word becoming visible and bright blue when the paper was washed over with iodine! This wonderful substance, iodine, has the property of rendering starch blue or violet color ; and as rice contains a considerable quantity of starch, an invisible ink pre- pared from it assumes that hue when touched with iodine, though previously quite colorless. th. Irascibility, The Perils of. — Some men are so irascible that they will quarrel at the slightest thing. They are like the larvas of the MegacephaliZ (a group allied to the tiger-beetles), which are described as being so rapacious and irritable that they seize at anything that disturbs them. In this way they are easily taken by inserting a straw in their burrows, which they instantly seize with their mandibles and pertinaciously re- tain, if In this, their easy capture, they remind us of the ready way in which the irascible men already referred to are en- snared by those who, knowing their propensities, are able, by the necessary provocation, to obtain facile conquests over them. Such are tlie perils of irascibility. mu. Irritable Temper, Shocks of — Electric fish are those fish which have the remarkabe property of giving, when touched, shocks like those of the Leyden jar. Of these fish there are several species, the best known of which are the torpedo, the gymnotus, and the silurus. The torpedo, which is very com- mon in the Mediterranean, has been carefully studied by MM. Becquerel and Breschet, in France, and by M. Matteucci, in 184 DICTIONARY OF Italy. The gymnotus has been investigated by Humboldt and Bonpland in South America, and in England by Faraday, who had the opportunity of examining live specimens. The shock that they give serves both as a means of offense and of defense. It is purely voluntary, and becomes gradually weakened as it i's repeated and as these animals lose their vitality, for the elec- trical action soon exhausts them materially. ipAmong the " odd fish " of human society are the constitutionally irritable ones. There are several varieties of them, but they all resemble each other in that they are perpetually giving off shocks of irritable temper, not only as a means of defense, but, and very especially, as a means of offense. The force of the shocks gets weakened, because those who have to bear them get used to the sensation. Shocks of temper which are terrible at first become trivial by repetition. But the irritable human being, especially if a female, is unlike the electric fish in regard to the exhaustion following the shocks. While the fish certainly suffers in that way, it is obvious that the human specimen does not. The fish lose their, vitality by giving off shocks, but irritable human beings become exhilarated and happy when they can exercise their functions in that direction. el. Jealousy, The Follies of. — The stag of the red deer {Cer- vus elaphus) in.the early part of September becomes exceedingly jealous. If a rival happens to approach his seraglio a combat a oiitrance immediately takes place. The two adversaries rush impetuously one against the other ; on their feet and knees they 'fight ; long and obstinate are such battles ; wounds are gi\-en and received, and blows are parried with consummate skill. Sometimes their antlers get entangled to that extent that they are unable to separate. Fastened together, the two heroes strive in vain to disentangle themselves, and some of these hostile couples thus closely riveted together ultimately perish of famine. Such are the follies of jealousy among stags. fl- Among men they are far more grotesque, as may be seen by a reference to cor- oners' inquests, law reports, or often by even a glance at an ordinary newspaper. m. SCIENTIFIC ILLUSTRATIONS. 185 Joint=Stock Company, A The idea of a joint-stock com- pany was probably first borrowed from the fox. 'I'he ways by which rogues associate themselves together to plunder honest folk, the strongest keeping in the background, and the weakest being put forward, very much remind one of the account given by Dr. Henderson, in his " Journal of a Residence in Iceland," of the manner in which the Arctic foxes, which abound in the vicinity of the North Cape, hunt various species of wild-fowl.' " They proceed," he says, " on their predatory expeditions in company,* and previous to the commencement of their opera- tions they hold a kind of mock fight upon the rocks in order to determine their relative strength. When this has been fairly ascertained they advance to the brink of the precipice, and tak- ing each other by the tail, the weakest descends first, while the strongest, forming the last in the row, suspends the whole num- ber till the foremost has reached their prey.'' Then they deter- mine upon a " voluntary winding up." A signal is now given, on which the uppermost fox pulis with all his might, and the rest assist him as well as they can with their feet against the rocks. In this way they make off and proceed from rock to rock, until they have provided themselves with a sufficient sup- ply, like a number of cunning promoters of companies pouncing^ down upon the public from the altitudes of magnificent schemes and vast professions. R. Judgment, Comparison and. — The estimation of distance and of size of objects depends on numerous circumstances ; these are, the visual angle, the optic angle, the comparison with objects whose size is famihar to us, the diminution of the preci- sion of the image by the interposition of a more or less vapor- ous medium. When the size of an object is known, as the fig- ure of a man, the height of a tree or of a house, the distance is estimated by the aperture of the visual angle under which it is seen. If its size is unknown, it is judged relatively to that of objects which surround it. A colonnade, an avenue of trees, the gas-lights on the sides of a road, appear to diminish in size in proportion as their distance increases, because the visual 1 86 DICTIONARY OF angle increases; but the habit of seeing the columns, trees, etc., in their proper height leads our judgment to rectify the impression produced by vision. Similarly, although very dis- tant mountains are seen under a very small angle, and occupy but a small space in the field of view, our familiarity with the effects of aerial perspective enables us to form a correct idea of their real magnitude. The optic angle is also an essential ele- ment in appreciating distance. This angle increasing or dimin- ishing according as objects approach or recede, we move our eyes so as to make their optic axes converge toward -the object which we are looking at, and thus obtain an idea of its distance. Nevertheless it is only by long custom that we can establish a relation between our distance from the objects and the corre- sponding motions of the eyes. It is a curious fact that persons born blind, and whose sight has been restored by the operation for cataract, imagine at first that all objects are at the same dis- tance. EL. Kindness Natural and Remunerative. — Kind Heaven has created the universe on the principle of kindness. Accord- ingly nothing which violates its law can in the end be advanta- ,geous, while conformity to the law is ever attended with every possible advantage. Take an illustration from the horticulturist. We well know that buds are placed upon the stem of the tree at regulated intervals, where they develop themselves in the form of branches, and extend the tree, nourishment being carried through them to every leaf and fiber. It is also one of their peculiarities that, without injury to these organs, they may be separated from the parent plant and placed upon another, which, so to speak, says Louis Figuier, becomes its nurse. Horticul- turists profit by these circumstances to produce some of their finest flowers and fruits. This process, known to gardeners as budding or grafting, is practised in many different ways, but in all the principle is the same.-:^\ The bud, without any of the wood, is carefully removed from the parent tree, and applied to a corresponding cut in the nursing one, covering the wound so as to keep out the air. The bud continues to grow on its SCIENTIFIC ILLUSTRATIONS. 187 new nurse, and in course of time it forms a branch or head of a tree producing the same flowers and fruit for which the parent may have been celebrated. The principle is applied most suc- cessfully in horticulture where some delicate species of fruit or flowers is produced on a stem destitute of the vigor necessary to nourish and bring it to maturity. Now this nursing of a life which needs such assistance for its proper development is only an emblem of what kindness is always doing in higher spheres. The kindness of the individual is constantly seen nurturing and promoting the growth of those of the human family whose future would be a blank without such aid. Human kindness in institu- tions is conspicuous for the mode in which it selects and trains those little ones who need a careful hand to form them for a higher life. And although of course there must be ingratitude in an imperfect world, do not the individual and the institution in numberless cases find that kindness has borne beautiful blos- som ? How many an uninteresting old life has become rejuve- nescent through the adoption of the young life ; has rejoiced in its productions, and been glorified by its purity! v. Kindness, The Transforming Power of. — There is noth- ing in the nature of the wildest animals to make their future gentleness and sociability either impossible or improbable. Even the devourers and their prey may by kind and judicious management be trained to live peaceably and harmlessly to- gether. Nothing appears more effectual to produce this pleas- ing amelioration than patient and persevering, kind and gentle treatment. They are now wild and savage from the appointed circumstances amid which they are at present ordained to live. >The jackal, when taken young, acquires the same affectionate disposition as the dog. The lion has been repeatedly tamed, and so has the fox. Rubens had a tame lion four weeks in his room to paint from. The large tiger-cat is easily tamed. The otter may be taught to catch fish for its master. The Egyptian ichneumon may be softened so as to be kept in a house like a cat. The weasel may be trained to follow a person anywhere. We see the bear repeatedly in our streets. The 1 88 DICTIONARY OF /i ^ . badger may be also made docile if caught young.r The rhinoce- ros and hippopotamus may be tamed in some degree. The tiger, if taken young, may be domesticated. Cuvier describes a young wolf that was brought up like a young dog, and dif- fered in nothing from the tamest dog. Father Carli, in his his- tory of Angola, mentions that he had taught monkeys to attend him, to guard him while sleeping against thieves and rats, and to fetch water.// The httle " Arab " of the London streets may by taming become z. learned man. p. Knowing Look, The. — The placid, half-indifferent, yet keen look "which is so observable in some "knowing" men reminds one of the chameleon's look. These men seem able to stare all ways at one time, to see nothing, and yet to observe every- thing. From the peculiar arrangement of the nerves and mus- cles, each of the eyes of the chameleon can move independent of the other. They can move in different directions, one up- ward, the other downward, the one forward, the other back- ward, and in all sorts of ways, without the head undergoing any change of position. " You cannot tell," says Mr. Gosse, " whether the creature is looking at you or not ; he seems to be taking a general view of things ; looking at nothing particular, or rather, to save time, looking at several things at once. Per- haps both eyes are gazing upward at your face. A leaf quivers behind his head, and in a moment one eye turns round toward the object, while the other retains its upward gaze ; presently a fly appears, one eye rapidly and interestedly follows all its move- ments, while the other leisurely glances hither and thither, or remains steady." The creature verily has the "knowing " look. MU. Knowledge as a Saving Power. — Hurricanes, revolving storms, or " cyclones," differ from mere local and temporary exaggerations of the regular atmospheric currents in this, that they are in the nature of vortices or circulating movements par- ticipated in by masses of air of from fifty to fi\'e hundred miles in diameter, revolving the more rapidly the nearer the center, up to a certain distance or radius within iv/iich tlieir is a calm. The SCIENTIFIC ILLUSTRATIONS. ^89 place of this center of rotation meanwhile advances steadily along a definite line upon the globe, with a velocity varying from two to thirty or forty miles per hour, and pursuing a track which in some of the hurricane regions, as in the West Indies, has a singular fixity of geographical situation and geometrical form. But the character which it is of most importance to a seaman to know, and the knowledge of which may often save his ship from disaster, as ignorance of it has repeatedly been the cause of catastrophes which might have been avoided, is this, viz., that in the same hemisphere great cyclones always revolve the same way (so far at least as our present information extends), but that this direction is opposite in opposite hemi- sphereSj^In the northern hemisphere their rotation is retro- grade, i.e., contrary to the motion of the hands of a watch laid face upward, or in conformity with the motion of the hand in unscrewing a screw. In the southern their rotation is direct, conformable to the hands of a watch or to the motion of a hand screwing in a screw into a horizontal board. ^ And this general fact affords the following simple rule by which to know at any given moment the bearing of the center of the vortex, which is the point of extreme danger, by reason of the fury of the wind in its vicinity, its sudden reversal, and the terrible sea which prevails there. When sure that you are within the limits of a cyclone, stand erect, and look full in the wind's eye, then, if in the northern hemisphere, turn yourself 90° or one quarter of the circle round to your right (if in the southern, as much to your left), and you will have the center of the current facing you. Thus if in the northern hemisphere the wind at the ship be due north (blow/ww the north), the center bears due east from the ship's place. ma. Latent Germs. — Germs of life may remain dormant for incalculable periods where least expected. Certain soils, by ex- posure to the sun's rays, or by aid of pecuHar manures, will produce plants where no preexistent root or germ could ration- ally be supposed to exist ; and peculiar and long-intervening seasons will give birth to insects from causes not to be divined. igo DICTIOXAKY OF In like manner germs of thought hidden in old phrases, old in- stitutions, old books, or forgotten biographies, spring into vig- orous activity, to the astonishment of mankind, when the con- ditions of human affairs happen to be propitious for their devel- opmentJj The germinal principle of a revolution may slumber for many a century in an unsuspected proposition. j. "Law," The "Ordinary," and the "Whole Law" Distinguished. — Many mistakes and many debates arise be- cause men do not distinguish the difference between that which is an ordinary law and that which is the whole law. Let us illustrate this by the following example : every one knows that " fire burns," and if we touch what is red-hot it will most pain- fully blister the skin, and that if the contact be prolonged only for a few seconds, the flesh will be destroyed with inexpressible torment. This is the ordinary law of Nature, and what we naturally conceive to be the whole of the law of Nature re- garding the action of fire and of red-hot substances. But if a quantity of lead be melted, and made so hot that it seems in- capable of any further increase of temperature, the hand may be dipped into it without sustaining the slightest injury, with- out being in the shghtest degree burned. This is well known to chemists ; and men with nerve enough to make the plunge have many times proved it to their startled friends and pupils. LI. Law, The Pitfalls of the — The insect known as the ant- 'lion, in its larval condition, is truly a wonderful being. A ruth- less destroyer of insects, it chooses some sandy spot where the soil is as far as possible free from stones, and begins to form the celebrated pitfalls by which it is enabled to entrap ants and other insects. Crawhng backward in a circular direction, it traces a shallow trench, the circle varying from one to three inches in diameter. It then makes another round, starting just within the first circle, and so it proceeds, continually scooping up the sand with its head and jerking it outside the limits of its trench. By continuing this process, and always tracing smaller and smaller circles, the grub at last completes a conical SCIENTIFIC ILLUSTRATIONS. 19 1 pit, and then buries itself in the sand, holding the mandibles widely extended. Should an insect, an ant, for example, hap- pen to pass near the pitfall, it would be sure to go and look into the cavity. No sooner has the ant approacheil the margin of the pitfall than the treacherous soil gives way, the poor in- sect goes tumbling and rolling down the yielding sides of the pit, and falls into the extended jaws that are waiting for it at the bottom. A smart bite kills the ant, the juices are extracted, and the empty carcass is jerked out of the pit, and the ant-lion settles itself in readiness for another victim.4j:This pit adum- brates American law, the ant-lion the lawyer, and the victim the litigant. The innocent litigant, in want of his rights, looks in- quiringly at the attractive pitfalls of the law to see if there is anything therein to his advantage. Very suddenly he finds himself involved in most mysterious processes. With great velocity he next discovers that he has lost his balance and is reduced to a most helpless condition. Soon afterward, on miss- ing his happy face from society, his friends make the melan- choly discovery that, in accordance with the object of the legal pitfalls, he has been pounced upon by the expectant lawyer, sucked dry, and ejected into the abyss of bankruptcy. h. Leadership, Capacity the Title to — Capacity, not adven- titious distinction, is the title to leadership. The institution of " ruling families " and privileged classes, which obtains among men, is despised even by horses, who will have none but those who give evidence of capacity to rule over them. The wild horses in the Ukraine,/and among the Cossacks] going in troops of four or five hundred, obey, apparently by compact, the com- mand of one of their own number. He by signs of voice makes them proceed or stop at his pleasure. When the troop is at- tacked by wolves or otherwise, he gives orders for the neces- sary ar;'angements for defense ; if he finds any horses out of their place or lagging behind, he obliges them to take their proper station. These animals, Smelhe tells us, of their own natural impulse march in as good order and steadiness as our trained cavalry ; they form companies, and pasture in files and 192 DICTIONARY OF brigades, without confusion or separation. The chief holds office for four or five years ; when he grows weaker and less active, another horse, conscious of strength and ambitious of command, springs forth from the troop and attacks the old chief, who probably resists, and if not vanquished keeps his command, but if conquered retires with evident shame and de- jection into the common herd. The conqueror is then recog- nized as sovereign and obeyed..:5'^When will men learn to profit by this example of the horse ? R. Liberty, An Unconquerable Love of. — "It is remark- able," says Boitard, "that the elephant is not, and never has been, a domestic animal, but a captive who only obeys through terror. However tame he may be, he never fails to escape into the woods to resume his savage life if an opportunity occurs. The need, therefore, arises that on a long march he shall have his driver, or niahout, on his back to guide him, threaten him, and prevent him from taking to flight. His love of liberty is as great as that of the wildest animals, and in the female ele- phants it even overpowers maternal love ; therefore, when suck- ling their young they are never released from their chains, for experience has proved that they will abandon them without regret if circumstances should enable them to effect their es- cape." i D. Life, One Essential Condition of No place is incapable of supporting vegetable life of some kind ; and although there are districts where grass and trees are never seen, and perpetual desolation gives the idea of their being worn out and effete, as happens in the great deserts in the interior of northern Africa, even there it is not so much an absolute incapacity to sustain life as the want of springs of water that causes the absence of it. In those sweet spots which have become a metaphor for all happy and blessed breaks in the history of trouble and sorrow — the " oases " of the desert — water is present, and vegetation is triumphant. Such an " oasis " was Elim, where there " were twelve wells of water, and threescore and ten palm-trees." LI. SCIENTIFIC ILLUSTRATIONS. 193 Life, The Ubiquity of — ^Wisely have the fungi been pro- vided, in the rapidity of their growth, the simphcity of their structure, the variety of their forms, and in their amazing num- bers, for their appointed task in the economy of Nature. Not a leaf that falls from the bough, not a blade that withers on the lea, but is seized by the tiny fangs of some special fungus organized to prey upon it ; not a spot of earth can we examine, where vegetable life is capable of growing, but we shall find a vegetable as well as an insect parasite, keeping its growth in check, hastening its decay, and preserving its remains from being wasted.j&"Ardently engaged in studying the laws of those functions by which life is carried on, begun, or con- tinued from one generation to another, the physiologist seeks illustrations of his favorite pursuit in every living object that presents itself to his observation. He travels nowhere without meeting something worthy of his attention, for it may be truly said that most parts of this world are dwelling-places of living creatures, and that we can scarcely find a spot uninhabited by beings endowed with life. We find life in the air, in the water, in the eternal snows of the Arctic regions, and the burning sands of the torrid zone. We find it near the summits of the loftiest mountains and in the deepest caverns ; even mephitic pools, poisonous soils, and boiling springs teem with animals and plants adapted to the peculiar circumstances in which they are placed, and furnished with an organization wisely contrived for their existence. s. Life, Fullness of.^Some men's natures are characterized by a remarkable fullness of life. Socially, morally, intellectually, spiritually, they are characterized by perennial vigor. They re- mind us of that wondrous fullness of life which is so striking a peculiarity of the palm-tree. Beside the blossom grows con- tinually the fruit, and from the fading circle of its leaves there springs with restless energy tlje fresh green. Thus it is that everything about the palm assumes the expression of inexhaus- tible vigor. Jf And when at last the tree lies dead beneath the weight of ages, even then a thousand labyrinth filaments of 194 DICTIOXARY OF parasitical plants twine round the trunk, and clothe it deceiv- ingly with an odorous and many-colored but spectral life. ST. Life under Right Conditions, Lastingness of. — Prop- erly ripened seeds, if placed in certain conditions, are literally immortal. That is to say, they are capable of retaining their growing power indefinitely ; not merely for a few centuries, but for thousands of years — how long, indeed, no man can say. The earthly crust of our planet appears to be stocked in every part with seeds that have been produced in years gone by, scattered upon the surface, and subsequently covered up with soil. Whenever the ground is disturbed, either by the plow or by the spade of the railway excavator, or for any purpose which causes its depths to be overturned, that portion which was many feet below being thrown to the surface, and exposed to the air, the sunbeams, and the moisture of dew^jnd rain, immediately there springs up a crop of young plants/'certainly not originat- ing in seeds only jusf then brought from neighboring fields, and as certainly from seeds that have been lying in the soil for ages. How they came to be covered up is easy to conceive when we see with our own eyes what is done by wintry floods, and the sweeping down of great masses of earth and soil, which accumu- late often to a considerable depth, and are no doubt similarly charged with seeds that, after waiting their turn, will some day grow. ^For it is a clearly estabhshed fact that no seed can germinate or begin to sprout unless it have the threefold influ- ence in direct operation upon it of warmth, moisture, and the atmosphere. Let it be shut in from the access of these and it lies passive!^ giving no sign of life or growth, and incapable of doing so. /' LI. Life, Tlie Expansiveness of Strong. — The banian or Indian fig-tree [Fiais Indica) surpasses in diameter the finest oaks of Europe, and is of evergreen foliage. It possesses the power of reproduction and multiplication. It throws off num- erous branches, of which several redescend toward the earth, force their way into it, take root therein, and in their turn de- SCIENTIFIC ILLUSTRATIONS. 195 velop into new trunks, whence spring other boughs that go through the same process of fructification ; so that a single stem spreads in time into a kind of forest, and the canopy formed by the outgrowth of a sohtary tree will frequently overshadow an area of seventeen hundred square yards.^ir- d. Life, The Mirage of. — The ardent imagination of youth, and the eager desire of hopeful men, often produce to the eye of faith glorious and glowing' visions of a bright future, which, alas ! are like a mirage. iWe) know that the mirage for the most part occurs in extensive plains when the weather is calm and heated by the sun. The plains of Asia and Africa have become celebrated in this respect ; thus during the expedition in Egypt the French army frequently experienced cruel decep- tions. The ground of Egypt forms a plain perfectly horizontal ; the villages are situated on small eminences. In the morning and evening they appear in their proper places, and at their real distances ; but when the ground is highly heated, the coun- try resembles a lake, and the villages appear to be built on islands, and reflected in the water. As we approach, the lake disappears, and the traveler, devoured by thirst, is deceivedA)-y his hope. exquisite colors, as happens among the Alps and also in the north frigid zone, where the humble little plants called lichens and mosses are in many cases dyed of the most brilliant hues, purple and gold predominating. Warmth, in like manner, will stimulate vegetable growth in the most astonish- ing manner, but it is growth not necessarily accompanied by the secretion of valuable substances, such as give quality and real importance to the plant. [Jjx-' English hothouses, for ex- ' ample, there are plenty of spice-trees, those generous plants that yield cinnamon and cassia, the nutmeg and the clove ; but although healthy and blossoming freely, they never mature their aromatic secretions. Though they have artificial heat equal to that of their native islands, which burn beneath the sun of the Indian Ocean, they cannot be supphed with similar and propor- tionate solar l{^At. The cloudy skies shut them in from the full and direct radiance of the sunshine, and wanting this, heat alone will-not-avail- ^^ li. Light a Healing Power Apart altogether from the cheer- fulness and mental serenity (important auxiliaries in the eradica- tion of disease ! ) which the bright rays of the sun invariably engender, light has a thermic influence upon the mind and body when prostrated by serious ailments, and certainly acts beneficially by chemically purifying the blood of the patient, as well as the atmosphere of the apartment he occupies. I. L. SCIEXTIFIC ILLUSTRATIONS. 203 Light, Children of the. — There are children of light and children of darkness. The latter shun the bright, the pure azure shining sky of truth with all its loving beams. Their world is like the world of insects, and is the world of night. Insects are all light-shunners. Even those which, like the bee, labor during the daytime, prefer the shades of obscurity. The children of light are like the birds. The world of birds is the world of light — of song^XJSTearly all of them, says Michelet, live in the sun, fill themselves with it, or are inspired by it. Those of the south carry its reflected radiance on their wings ; those of colder climates in their songs ; many of them fol- low it from land to land. t. b. " Lilies, Consider the." — The water-lilies never grow in foul water, and always prefer that which is in steady though slow movement, loving especially the little bays along the edges, where they can spread their broad leaves upon the sur- face undisturbed, and expand their argent cups, brimming with golden stamens, to the light of the sun. Toward evening they close their petals in a kind of sleep, and during the period of their highest life, which is that of the preparation of the seed that is to renew the plant, they not only close, but sink below the surface of the stream. ^^ li. Liquidator, The Speculative — Our winding-up courts have revealed a vast multitude of persons speculating in the liquidation of public companies, who are called " wreckers.'' These " wreckers,'' when once settled on the corpse of a com- pany, cannot be induced either by decency or pity to move away. Greedy and cruel, they are like the tawny vulture ( Gyps fulvus), which feeds, like the rest of its family, upon carrion. When a party of these vultures has once taken possession of the carcass of a large animal, they are said never to quit it as long as a morsel of the flesh remains, so that they may be seen in the same spot for days together. When fully fed, or rather crammed with food, they are quite incapable of flight ; and if suddenly disturbed in this happy condition, they are compelled to disgorge the greater part of their banquet before they can 204 DICTIONARY OF Little Influence Added to a Great Enterprise, The Use of a. — A little river may be received into a large one without augmenting either its width or depth. This, which at first view seems a paradox, is yet very easily accounted for. The little river in this case only goes toward increasing the swiftness of the larger, and putting its dormant waters into motion. |' a. Little Things, The Aggregate Capacity of. — At the first glance it seems improbable that the animalcules should possess any influence over the movements of the ocean — the symbol to human minds of immensity — but we might as well deny the action of the drops, the molecules of salt and water which compose it. What matters their minuteness when numbers compensate ? And the number of animalcules which work and throb in the bosom of the seas is as incalculable as that of the drops of water. Their fecundity is inconceivable ; the waters are literally composed of them ; they are the " living waters " of Scripture. They preserve the identity of the com- position of the sea by absorbing the salts mostly with a basis of limestone which proceed from the washings of the land. They assimilate these sohd elements, and transform them into shells, madrepores, corals, whose cells group together, cross, and ac- cumulate upon one another until the dense strata which they gradually form are prepared to serve as the foundation of islands, archipelagoes, perhaps of continents. my. Littleness, The Spirit and Security of. — A chapter in the history of the whale affords a good illustration of the spirit and security of httleness. As the whale is an inoffensive ani- mal, it is not to be wondered that it has many enemies, willing, to take advantage of its disposition and inaptitude for com- bat. There is a small animal, of the shell-fish kind, called the whale-louse, that sticks to its body as we see shells sticking to the foul bottom of a .ship, l. This insinuates itself chiefly under the fins ; and whatever efforts the great animal makes, it still keeps its hold, and lives upon the fat, which it is provided with instruments to arrive at. Now this transaction may be taken SCIENTIFIC ILLUSTRA2UONS. 205 as a very true revelation of the usual workings of the spirit of littleness. Littleness is always living on greatness. The great man has always some little creature at his side, who is wheed- ling for himself the favors by which he lives. Moreover, little- ness is often safe because of its littleness. The great man has no arts or appliances by which to detect and thwart the tactics of the little knaves and tiny rascals who compass him about. Again, littleness knows that its seclusion is its security, so that, like the whale-louse, it gets, as it were, under the fins of great- ness — to those places where it can gratify itself without being detected. Like this same creature, too, littleness wherever found — whether in the church, in the market, or in the home — is furnished with a mechanism admirably adapted for its sus- tenance, servility, baseness, and lying being among the more prominent features thereof. a. Love, The Courage of — It is said that the great bustard will forsake her nest if only once driven from it by apprehen- sion of danger ; but when the eggs are laid, and still more when the young are produced, it is only repeated meddling with them that will induce the' parents to forsake them. hi. Love, Aspects of. — Love is a light upon the sea of life. Upon the tranquil scenes of domestic and social existence its graces gleam and its virtues sparkle, so that as we move along we are reminded of a calm evening on the phosphorescent sea — ^no gloom, no excitement, no harsh noises. Each dip of the boatman's oar is accompanied by a brilliant flash, a tremulous radiance plays round the sides of his little vessel, and a long stream of light follows in her wake. In stormy times, too, love is like that phosphorescent sea, which then exhibits a spectacle of awful grandeur. Each wave appears crested with light, and, as it crashes against the sides of a ship, looks like broken masses of liquid fire. And when life is beset with gloom unutterable, and its ways resemble a sea dark and tempestuous, the light of love irradiates the surging scene with its self-sacrificing beams ; its flashes of honest indignation start as the forces of 2o6 DICTIONARY OF oppression plow their way, while its thousand inexplicable co- ruscations glance and gleam over every troublous billow as it breaks. s. Lowly Teachers of Prudential Virtues. — The exterior of a hive, says M. Victor Rendu, gives the best idea of this people, essentially laborious. From sunrise to sunset all is movement, diligence, bustle ; it is an incessant series of goings and comings, of various operations which begin, continue, and end, to be recommenced. Hundreds of bees arrive from the fields, laden with materials and provisions ; others cross them and go in their turn into the country. Here, cautious sentinels scrutinize every fresh arrival ; there, purveyors, in a hurry to be back at work again, stop at the entrance to the hive, where other bees unload them of their burdens ; elsewhere it is a work- ing-bee which engages in a hand-to-hand encounter with a rash stranger ; farther on the surveyors of the hive clear it of every- thing which might interfere with the traffic or be prejudicial to health ; at another point the workers are occupied in drawing out the dead body of one of their companions ; all the outlets are besieged by a crowd of bees- coming in and going out ; the doors hardly suffice for this hurrying, busy multitude. If all appears disorder and confusion at the approaches to the hive, this tumult is only so in appearance ; an admirable order pre- sides over this emulation in their work, which is the distincti\-e feature in bees/iyrThese insects preach to us diligence, activity, vigilance, ingenuity, and order. If their sermon were hstened to, and these five virtues were embodied in the lives of all working-people, the material state of society would become glorious. • I. Lurking Dangers. — Many of the most deadly snakes lie concealed just below the surface of the sand, ready to strike a death-blow to the incautious traveler ; others Im-k and hide in the branches of trees and bushes, from which they dart upon the unwary. The wonderful resemblance in color they bear to the places in which they are found renders them difficult to be seen by the unpractised eye. However wary you may be, SCIENTIFIC ILLUSTRATIONS. 207 it is often difficult to escape with your life. These reptiles re- semble the lurking dangers which encompass us on every side in our progress through this world. Diseases, treacheries, false- hoods, and troubles seem to be in wait for us during a large portion of our journeyj^ We have hard work to elude them; and if we ourselves escape, we have the melancholy misfortune to see them strangling or poisoning our friends. i. o. Luxuriance a Hindrance to Progress. — We have observed people who have been confused with the luxuriance which sur- rounded them. So sumptuous was the provision of every kind that the taking of any step was only an exhibition of the diffi- culty of action. " The embarrassment of riches " is not a figure of speech, but a fact. The man who is surrounded by too much luxuriance is like a traveler amid the profuse flowering vegetation which characterizes some of the Asiatic steppes of the temperate zone. On crossing the trackless portions of these herb-covered steppes in the low carriages of the Tartars, it is necessary to stand upright in order to ascertain even the direction to be pursued through the copselike and closely crowded plants that bend under the wheels. Some of these steppes are covered with grass ; others with succulent ever- green, articulated alkaline plants ; while many are radiant with the effulgence of lichenlike tufts of salt, scattered irregularly over the clayey soil like newly fallen snow. It is obvious that the traveler's progress would be much easier across the com- mons and fields of our own land, where Nature has not been so prodigal in the luxuriance of her gifts. In like manner, the movements in social life of persons who have neither poverty nor riches are noticeably more easy and less anxious than those of such individuals as are literally surrounded with luxury, who on account of the very abundance of their possessions are puz- zled as to the course they are to pursue for even their gratifica- tion from day to day. vi. Majestic Twaddle. — AVe are too prone to erroneous ascrip- tion. Upon mere hearsay we accept certain persons and insti- tutions as being wonderful, and then ever afterward persistently 2o8 DICTIOA'AKY OF ascribe to them 'qualities and virtues which they do not possess. Vulgar people speak of " aristocratic " grace, of the " nobility " of peers, the " majesty " of royalty, and so on and so on in dis- mal, snobbish monotony. This mistaken habit is well illustrated by the error which people fall into when they assign to the lion qualities which he does not possess. Dr. Livingstone says : " Nothing that I ever learned of the lion led me to attribute to it either the ferocious or noble character ascribed to it else- where. It possesses none of the nobility of the Newfoundland or St. Bernard dogs. The same feeling which has led the mod- ern painter to caricature the lion has led the sentimentalist to consider the lion's roar the most terrible of all earthly sounds. We hear of the ' majestic roar of the king of beasts.' fit is in- deed well calculated to inspire fear if you hear it in combina- tion with the tremendously loud thunder of Africa on a night so pitchy dark that every flash of the intensely vivid lightning leaves you with the impression of stone-blindness, while the rain pours down so fast that your fire goes out, leaving you without the protection of even a tree, or the chance of your gun going off. But when you are in a comfortable house or wagon the case is very different, and you hear_the roar of the lion without any awe or alarm. iThe silly ostrich makes a noise as loud, yet he never was feared by man. To talk of the majestic roar of the lion is mere majestic twaddle. In general the lion's voice seems to come deeper from his chest than that of the ostrich; but to this day I can distinguish with certainty between them only by knowing that the ostrich roars by day and the lion by night." a' y. m. Man as Revealed by Society. — As a rule man's appear- ance is not pleasing when he is seen in his own isolation. His brightest and best colors are revealed through the medium of relationships. If in isolation, he is like a metal in its own vapors. For example : every metal can be burned, and heat sufficient being employed, the burning mass can be made to evolve a vapor. Every metal burns with a certain invariable color, and the light of these colors can be projected through a SCIENTIFIC ILLUSTRATIONS. 209 prism. If so projected, a line across the spectral image results, of certain specific size and also color ; but if the light of a burn- ing mass of metal be transmitted through its own vapors, then the band of color it would have yielded on the spectrum is quenched as to color, and the result is not color but black. Now we say that this is something hke the difference which there is between man alone and man in society. Man in isola- tion appears only in the melancholy colors of a recluse or an anchoret. But when beheld through the family circle, the club, the confederation, or the great and good organizations of society, he appears to a far greater advantage, for then, instead of being gloomy, his character assumes hues of beauty and splendor of variety which may gladden and delight all eyes. S. N. Man the Enemy of Man — While on the steppe tigers and crocodiles contend with horses and cattle, so on the forest borders and in the wilds of Guiana the hand of man is ever raised against his fellow-man. With revolting eagerness some tribes drink the flowing blood of their foes, while others, seemingly unharmed, yet prepared for murder, deal certain death with a poisoned thumb-nail. The feebler tribes, when they tread the sandy shores, carefully efface with their hands the traces of their trembling steps. Thus, as Humboldt declares, does man, everywhere alike, on the lowest scale of brutish debasement and in the false glitter of his higher culture, perpetually create for himself a life of care. And thus, too, the traveler, wandering over the wide world by sea and land, and the historian who searches the records of bygone ages, are everywhere met by the unvarying and melancholy spectacle of man opposed to man. -f vi. Man and a Frog, The Resemblance between a. — The frog must be classed among the comic types of the animal cre- ation. That it should be so arises chiefly from his resemblance to man. Who is there that has not seen men with froglike countenances ? These are for the most part beardless, short- necked heads, obtusely shaped faces, with bald pates, a straight 2.1 o DICTIONARY OF or partly flattened nose, prominent eyes, a wide mouth, reced- ing chin, and puffed-up cheeks. If to such physiognomy be joined a fair, round-bellied, abbot-like stature, no single feature will be wanting to make the resemblance complete. That the frog's head is always flat does not lessen the resemblance : it is the eyes as well as the cheeks which are mainly instrumental in producing the likeness. With unmistakable importance do they present themselves : large, round, sprightly, capable of a fixed, bold look, and in certain species surrounded by hds. Their color varies from a deep black to a flaming yellow. In the frog's head mere indications of a nose and ear are to be seen, while the wide mouth is all the more conspicuous. The head, which is not raised upon a freely moving neck, is joined immediately to the trunk with slender, delicate articulations, xjhe hind leg is lengthened to an extraordinary degree ; indeed,^ besides the immense toes, no other animal can show so human- looking a leg as the frog. The formation of the bones and muscles is also the same as in man, the latter forming a perfect calf, while the nakedness of the animal's body causes the re- semblance to show more strikingly. The frog is indeed an anthropomorphism. Who is there when bathing, as his com- rade skilfully swims past him, has not been reminded of the green-coated paddler, as he jumps from the bank, and with regularly changing stroke divides the waA-es ? Owing to this very resemblance, a celebrated natural philosopher of the last century was betrayed ipto describing the petrified skeleton of a frog of a former age as the bones of an antediluvian man ; \i and on this account, too, does the fable of the metamorphosis of the Lycian peasants into frogs take such hold upon our fancy and strike us as so appropriate. ST. Man, A Domestic Resemblance between Reptiles and. — It is not uncommon to hear persons speaking of their guar- dianship of their children as though it were a virtue. It may or may not be so, according to circumstances. But this is quite certain, that the love of offspring, and the desire to guard it, are exemplified by reptiles as well as by men, It may not be SCIENTIFIC ILLUSTKAIIOXS. 211 flattering to the officious mother of a little family of children to tell her that those exertions of hers, for which she expects so much applause, are very analogous to the efforts which a re- spectable reptile will put forth on behalf of its progeny ; but such is the fact. Fol" Mr. Wood tells us that some species of reptiles are very jealous about even their eggs. They keep a strict watch over them ; and several of the larger serpents have a curious fashion of placing the eggs in a heap, and then coil- ing themselves around them in a great hollow cone, in order the better to protect them from possible harm.:i If they do not use a perambulator for them, it is obviously because that is un- suitable, and not from want of interest. il. Man, The " Climbing." — We have all met with the man who can never do things as other men do them ; who, on the ordinary levels of daily hfe, never seems capable of standing or advancing. His mind is ready enough in moving in the masses of complicated speculations, and twisting and turning in labyrinthian schemes whose tortuous windings he cannot see the end of. But directly the plain, the straightforward, the firm path of every-day life is under him, he staggers as if quite out of his element. So he is. Though a member of the human family. Nature has created him with, a peculiarity which makes him a " climbing " man, and not one of those who walk up- rightly. He has his representative among the sloths. The tliree-toed sloth is the only mammal which can neither walk nor stand. He is desperately slow in his motions, but still when he is above, in the winding branches of the trees, he does climb about with some aptitude. On the plain he is helpless ; and even in his climbing he is not of much service. Strange that those who can climb so very high cannot walk on a plain road for bread and cheese. Strange that " chmbing " men pos- sess every sense but common sense, f i. Man, Tlie Vain. — The vain man is like the peacock. But his vanity is offensive, while that of the peacock is amusing. Should a word of praise reach the peacock's ear or the hen show herself in his neighborhood, in a moment the flowery 212 DICTIONARY OF wheel is unfolded, he stretches his ghttering neck and utters a displeasing, cathke cry; while, on the other hand, he retires from the sight of the indifferent observer, and in the molting season, when he has no fine feathers to show, he withdraws into solitude.4' His flight is a mere fluttering that raises him very little above the ground ; yet he hkes to perch on a neighboring roof-ladder, or some other lofty spot, in order to show himself to advantage and be admired. O little Tom Grandsnob, see yourself in this picture ! ST. Man a Worse Animal than he was Intended to be — Some creatures are unquestionably used as scourges ; but per- haps the less we mortals say about such animated pests the "better. They act up to their own organization, but never be- yond ; while it is far otherwise with mankind. The serpent employs its poisoned fangs to procure food or avert peril, real or fancied ; the jaguar uses its terrible incisors in the destruc- tion of its prey ; and the shark avails itself of its dental appa- ratus to assuage its appetite. But man, says Hugh Miller, must surely have become an immensely worse animal than his teeth show him to have been designed for ; his teeth give no evi- dence regarding his real character. Of our racks and thumb- screws, our inquisitions and oubliettes, oui" noyades at Nantes and our mitraillades at Lyons and Toulon, there is no prophetic in- timation in our dentology. c. b. Mankind, The Supersedure of During the primitive epoch the mineral kingdom existed alone. The rocks, silent and solitary, were all that was yet formed of the burning earth. During the transition epoch, the vegetable kingdom, newly cre- ated, extended itself over the whole globe, which it soon cov- ered from one pole to the other with an uninterrupted mass of verdure. During the secondary and tertiary epochs, the vege- table and the animal kingdom di\-ided the earth between them. In the quaternary epoch the human kingdom appeared. Is it in the future destinies of our planet to receive yet another lord ? And after the four kingdoms which now occupy it, is there to be a new kingdom created, the attributes of which SCIEXTIFIC ILLUSTKATIOyS. 213 will ever be a mystery to us, but which will dififer from man in as great a. degree as man differs from animals and plants from rocks 1 i- w. Man's Superiority Due to Intellect. — Too much stress has been laid upon the proud upright position of man, and a great deal has been said and written concerning the sublime aspect of his countenance and the godlike dignity of his car- riage. A moment's consideration will be sufficient to show that though he looks upward with ease ajid facility, he cannot, in this respect, claim anj^ superiority. The/ eagle which gazes on the sun with undazzled eye, and makes his pathway among the clouds, yields not in dignity of appearance or power of locomo- tion to man, who merely walks upon the ground. Can man measure his beauty with the antelope, his speed with the horse, or his strength with the elephant? It is in virtue of his intellect, of his reason, and not of his bodily form, that he ranks above -fie- ou'"!'!'!-- his fellows. It was in mind, ri'ot in body, that " God made man in His own image." s. Man's Deportment, A Strong — A really capable man is always considerate of those about him. He does not with fussy haste push people in all directions, regardless of injuries, as does the weak ambitious man. He does not, like a serpent, sting those who oppose him ; nor does he snarl at them like a dog. He calmly moves them out of his path. In the exhibi- tion of his power, and in his regard for others, his march resem- bles that of a noble elephant. As the elephant is conscious of its own strength, it takes every precaution so that its heavy mass may not harm creatures that are weaker than itself. If it passes through a crowd, it opens a passage for itself with its trunk, and gently pressing forward its fore limbs, advances in such a manner as to hurt no one. J^ m. Marauder, Plan for Punishing a. — The long-eared owl ( Otus vulgaris) is strictly nocturnal and at night is active in search of its prey, which among other things consists of small birds. These it is said to capture by snatching them from their roosting-places. However this may be, the finches, warblers, 214 DICTIONARY OI' and other small birds seem to regard the owl in the light of an enemy, and show the greatest animosity toward him whenever they have an opportunity for such a display of their feelings.-^ If he should by chance prolong his predatory excursions so as to be surprised by the light of day when still at a distance from his favorite haunts, and thus be compelled to take refuge in some such imperfect shelter as a hedge or bush affords, the dis- covery, almost certain to take place, of the unfortunate sleeper in his temporary lodging is the signal for a simultaneous rising among all the small birds in the neighborhood, who flock to the place and raise such a commotion as rarely fails to cause the owl to_ change his quarters ; and should he be at such a distance from the thick woods and plantations as to render his reaching them very difficult, or even impossible, while his senses are dimmed by the unwonted glare, the disturbance will sometimes last until the shades of evening put a stop to it by dismissing the little persecutors to their roosting-places. Com- munities of men who suffer from the proceedings of human marauders act upon much the same principle. They catch their royal rogue at a disadvantage and then avenge them- selves. MU. Marksman, A Good. — The Chmtodon rostratus, which fre- quents the shores and mouths of rivers in India, feeds princi- pally on flies and other small winged insects that hover over the waters. When it sees a fly at a distance on anv of the plants in the shallow water, it approaches very slowh*, and witli the utmost caution, coming as much as possible perpendicularlv imder the object. Then putting its body in an obhque direc- tion, with the mouth and eyes near the surface, it remains for a moment immovable. Having fixed its eyes directly on the insect, it shoots at it a drop of water from its tubular snout, but without showing its mouth abo\-e the surface, from whence only the drop seems to rise. This is done with so much dex- terity, that though at the distance of four, five, or six feet, it seldom fails to bring the fl^- into the water. p. Master Minds.— The banian, or sacred fig of India, ac- SCIENTIFIC ILLUSTRATIOXS. 215 quires a prodigious size, not by the enlargement of its indi- vidual trunk, but by the multiplication of its trunks in a pecu- liar manner of growth. As its horizontal limbs spread on all sides, shoots descend from them to the earth, in which they root, and become so many secondary stems, extending their own lateral branches, which in turn send down fresh rooting shoots, thus ever widening the area of this wondrous forest, composed of a single organic life. In the forest of humanity there are master minds who compare with ordinary minds as the banian compares with ordinary trees, /^^l^y occupy vast space in the intellectual world, because they create and sustain, upon a grand scale, other kindred, minds, who themselves take new roots and expand and grow in all directions, and yet con- tinue one with the great parent mind. There is no room for base fungi where they flourish. Carlyle and Emerson are speci- mens of this order of mind. Their influence has extended far across the plains of human thought, and produced spiritual fruit for the healing of the nations. RO. Matrimonial Life, Types of. — There are some husbands and wives whose conduct to each other depends entirely upon surrounding circumstances. When there is plenty of money at the bank, and prosperity is shining upon the homestead, their affinity and love for each other is intense. But in the gloom of adversity, and under somber influences, they have no mutual attraction whatsoever, and their affections are kept in isolation. This type of the matrimonial life may be called the chlorin- hydrogen type. Chlorin and hydrogen are gases having a powerful affinity for each other — that is to say, they will unite when brought together in the daylight ; but if we change the conditions, if we bring them together in the dark, their affinity is never manifested ; and thus, while in the sunlight they rush together with even explosive force, they will remain quiescent in the darkness, and there for all eternity would form no com- bination whatever. ph. Matter is Indestructible. — When a candle burns in the air a chemical change is going on ; and although the candle dis- 2l6 DICTIONARY OF appears, the materials of which it is made up are not destroyed or lost ; they simply pass into a state in which they are invisi- ble to our eyes, but their presence may be ascertained by other means. Thus, if we burn a candle for a few minutes in a clean bottle filled with air, and afterward pour in some clear hme- water, we shall notice that the liquid, which remains clear in pure air, becomes at oiice milky, showing the presence of an invisible gaseous body produced by the burning of the candle, which possesses properties different from those of pure air. ' Although an apparent loss of matter occurs when a candle burns, it is easy to show by a simple experiment not only that this is not the case, but that, on the contrary, an increase of weight has occurred ; this increase is occasioned by the con- stituent parts of the tallow or wax having united chemically with an in^'isible gas (called oxygen) present in the air. By the careful examination of all the known cases of chemical action it has been satisfactorily proved that a loss of matter never takes place, that flatter is indestructible, and that in chemical actions such as that going on in the burning of the candle a change of state and not an annihilation of matter occurs. The truth of this first great principle in chemical sci- ence has been gradually demonstrated by finding that the weight of the substances acting chemically upon one another al- ways remains the same after as before the chemical changes have occurred. les. Matter, The Circulation of. — Few things appear more incomprehensible than the production and reabsorption of mat- ter. An animal falls to the ground and dies ; myriads of crea- tures are now summoned by a call, by an impulse of which we have no perception, to remove it, and prepare it for a new com- bination ; chemical agencies, fermentation and solution, immedi- ately commence their actions, to separate the parts ; and in a short time, of all this great body nothing remains but the frame- work or bones, perhaps a httle hair or some wool4^-all the rest is departed we know not whither. Worms and/ihsects have done their parts ; the earth has received a portion ; and the rest. SCIEXriFIC ILLUSTRATIOXS. 1^1 converted into gases and exhalable matters, has dispersed all over the region, which, received into ^•egetable circulation, is again separated and changed, becomes modified anew, and nourishes that which is to continue the future generations of life. The petal of the rose, the pulp of the peach, the azure and the gold on the wing of the insect, all the various produc- tions of the animal and vegetable world, the very salts and com- pounds of the soil, are but the changes some other matters have undergone which have circulated through innumerable channels since the first production of all things, and no particle been lost. J. Matter, The Transmigrations of. — The mountain rock, exposed to the disintegrating effects of the weather, loses that peculiar chemical or cohesive life which keeps it from changing or decaying, and crumbles into dust, in which state it is borne down by the storm on the stream to the plain. The soil thus formed is taken up by the roots of plants, and eliminated into the various parts of their structure. These plants die, and form by their decomposing remains a rich and fertile mold. Down into this stratum of decay and death the grass strikes its roots, and forms the support of those animals which man rears exclu- sively for food. The particles thus organized become endowed with the highest vitality, and are associated with the immortal spirit in the closest and most intimate relationship, so that what is now bone of our bone and flesh of our flesh may have once formed part of a granite rock protruding far up among the clouds on some distant mountain peak. J b. Matter, The Extreme Divisibility of. — Divisibihty is the property in \'irtue of which a body may be divided into distinct parts : and \-ery wonderful are its results. Numerous examples may be cited of the extreme divisibility of matter. The tenth part of a grain of musk will continue for years to fill a room with its odoriferous particles, and at the end of that time will scarcely be diminished in weight. Blood is composed of red flattened globules floating in a colorless hquid called serum. In man the diameter of one of these globules is less than the 2i8 DJCrJONARV OF thirty-five-hundredth part of an inch, and the drop of blood which might be suspended from the point of a needle would contain about a million of globules. Again, the microscope has disclosed to us the existence of insects smaller even than these particles of blood ; the struggle for existence reaches even to these little creatures, for they devour still smaller ones. If blood runs in the \tm& of these devoured ones, how infinites- imal must be the magnitude of its component globules ! el. Meddlers, A Caution to Domestic. — Some people do not understand how to cooperate for public ends without interfer- ing with the privacy of domestic life. The seals teach a good lesson in this respect. They can work together at proper times ; but they honor the sanctity of home. They live sociably, and in great numbers frequent the same localities. Although in the sea these animals cooperate in numerous herds, and protect and valiantly defend each other, once emerged from their favorite element they regard themselves on their peculiar rock as in a sacred domicile, where no comrade has a right to intrude upon their domestic tranquillity. If one of them approach this fam- ily center, the chief — or, shall we say, the father? — prepares to expel by force what he considers a foreign aggression ; and there invariably takes place a terrible combat, which only ends in the death of the lord of the, rock, or in the compulsory re- treat of the indiscreet stranger. T. This proceeding is well worth the attention of every busybody. It is full of sense, and shows a discrimination between public cooperation for the comrnon good, and officious interference in private life, which would do credit to even human beings. my. Meddlers, A Hint to — If a bee-master is to succeed, he must be very careful not to meddle much with his bees. Bees, hke most other corporate bodies, have a great horror of inter- ference from outside, and always like to work their own reforms without the assistance of commissions from other quarters, and think that their own sovereign is quite capable of governing them without seeking the help of other powers. To meddle unnecessarily with them is to prevent their proper working. B. W. SCIENTIFIC ILLUSTliATIONS. 219 Memory's Mode of Appropriation. — Understanding is not essential to memory ; the memory of many things not under- stood may be vital within us. For the fact is that memory often grips and appropriates quite mechanically. The magpie appro- priates the silver spoon, carries off the gold pencil, and num- bers of other articles, without knowing what they are or what to do with them, and stores them carefully away. Like the magpie, the memory is a cleptomaniac. It cannot restrain itself from snatching at and stealing away all sorts of things. Hence the importance of keeping away from thoughts and scenes which it is undesirable for memory to accumulate. The magpie does not turn his medley of stores to much account. The memory does. It is constantly meddling with them, and they are all turned to either a good or evil purpose.// And tKey endure forever. • G. s. Mental Lights. — Aldebaran was once the grandest star of the firmament, and Sirius had a companion-star once the bright- est in heaven, and now one of the feeblest. Because they are now dim to us, are we to conclude that they are going out and becoming' naught ? r The stars, says Mr. E. S. Dallas, are over- head, though in the blaze of day they are unseen ; they are not only overhead, but also all their influences are unchanged. So there is knowledge active within us of which we see noth- ing, know nothing, think nothing. Thus in the sequence of thought, the mind, busied with the first link in a chain of ideas, may dart to the third or the fourth, the intermediate links being utterly unknown to it. But they are there, and there in force. G. s. Mental Fertilizers of Society, The. — Mountains act as lodestones to the clouds, and draw down from them the ferti- lizing rain. A mountain range often determines whether a coun- try is to be a garden or a desert, and points out the place where the rain-bearing winds are to yield up their treasures. Moun- tains drink the waters of the rain of heaven. They are the great watersheds of the earth. On their tops the river systems of the world are born, and the tiny rills thence first started on their way soon coalesce into streams, and then into rivers, to be 2 20 DICTlbNARY OF poured back eventually, into the sea. They are the dispensers of fertility. In the world of mind there are souls which rise above the common plains of human thought as those mountains ascend above the levels of the land. They tower upward into the heavens of genius. They commune with truth. They send down its refreshing influences to the arid wastes of common- place, and make the intellectual desert blossom like the rose. They are the mental fertilizers of society, it. be. Mercenary Spirit, The — The mercenary spirit among men is hke the heron among the birds. Now look at the heron and you will see the resemblance at once. Of all other birds he commits the greatest devastation in fresh waters ; and there is scarcely a fish, though never so large, that he will not strike at and wound, though unable to carry it away. But the smaller fry are his chief subsistence ; these, pursued by their larger fel- lows of the deep, are obliged to take refuge in shallow waters, where they find the heron a still more formidable enemy J? His method is to wade as far as he can into the water, and there patiently wait the approach of his prey, which when it comes within sight, he darts upon with inevitable aim. In this man- ner he is found to destroy more in a week than an otter in three months. In general he is seen taking his gloomy stand by the lakeside, as if meditating mischief, motionless, and gorged with plunder. But though in seasons of fine weather the heron can always find a plentiful supply, in cold or stormy seasons his prey is no longer within reach, and the heron is obliged to sup- port himself upon his long habits of patience, and even to take up the weeds that grow upon the water. At those times he contracts a consumptive disposition, which succeeding plenty is not able to remove. Hence, notwithstanding the care with which he takes his prey and the amazing quantity he devours, the heron is always lean and emaciated. And though his crop be usually found full, yet his flesh is scarcely sufficient to cover the bones. Thus he is like the man of mercenary spirit. The mercenary man is active, daring, diligent, patient, cruel, and voracious, and he, also, is unhappy. He wants more than is SCIENTIFIC ILLUSTRATIONS. 22 1 good for him, and consumes more than he can turn to useful account. If he gains the whole world, he is lean and hungry still. He works for flesh, obtains it, and yet is slceletonic and solitary. When a number of these, in the form of Israelites, craved for flesh. Heaven gave it them, but even then leanness was sent into their souls. a. Metamorphosis a Law. — A most curious and most impor- tant field of microscopic inquiry has been opened up in the study of the transformations which a large proportion of the lower animals undergo during the early stages of their exis- tence ; and notwithstanding that it has even yet been very im- perfectly cultivated, the unexpected result has been already attained, that the fact of " metamorphosis," previously known only in the cases of insects and tadpoles, and commonly con- sidered as an altogether exceptional phenomenon, is almost uni- versal among the inferior tribes ; it being a rare occuiTence for the offspring to come forth from the egg in a condition bearing any resemblance to that which characterizes the adult, and tlie latter being in general attained only after a long series of trans- formations in the course of which many curious changes are presented. There is no monotony in Nature. " Pass on," is ever the command. mi. Mien is Independent of Occupation. — There is a very large tribe of beetles of which the British type is the common dor-beetle. Its color is wondrously beautiful, and its polished surface gleams as if made of burnished steel, pure and bright as armor just out of the smith's hands. Yet this creature has been burrowing deeply into the ground, has been meddling with the most noxious substances, a'nd still retains no trace of its past labors. Not a speck of mold remains upon its surface, not a stain defiles its hmbs, neither does it retain the least odor which would betray its occupation. It serves to remind us that a mqn's mien need not be repulsi\'e, merely by reason of the fact that his occupation is offensive. -VrHe has within himself a power to make his individuality superior to his surroundings. His demeanor and his character may both be beautiful even 22 2 DICTIONARY OF though he has to do rough work. Indeed we have known quarry men, colliers, and iron- workers who in point of manners and culture would compare most favorably with men in cities who had never done anything but clean-looking work. Real manhood always stands out in attractive forms whatever may be its honest occupation. The beetle turns unpleasant sub- stances into a beautiful appearance, and man creates a brilliant character out of harsh elements. h. Mind, The Supremacy of. — From a general study of four- handed animals, we perceive what few advantages the brute creation derive from those organs that in man are employed to so many great and useful purposes. The being able to pluck their food from the trees, the capacity of clinging among the branches, and at most of converting one of those branches into a weapon of defense, are the highest stretches of their sagacity, and the only use their hands have hitherto been employed in ; and yet some superficial men have asserted that the hands alone are sufficient to vindicate the dominion of mankind over other animals, and that much of his boasted reason is nothing more than the result of his happier conformation. However, were this so, an ape or a monkey would in some instances be more rational than we ; their fingers are smaller, and in some of them more finely formed than ours. To what a variety of purposes might they not be employed if their powers were properly exerted ? Those works which we, from the largeness of our fingers, are obliged to go clumsily about, one of these could very easily perform with the utmost exactness; and if the fineness of the hand assisted reason, an ape would be one of the most reasonable beings in the creation. But .these admi- rably formed machines are almost useless both to mankind and themselves, and contribute litde more to the happiness of ani- mal life than the paws of the lowest quadruped. They are supplied indeed with the organs, but they want the mind to put them into action : it is that reasoning principle alone, with which man has been endowed, that can adopt seemingly oppo- site causes to concur in the same general design, and even SCIENTIFIC ILLUSTRATIONS. 223 where the organs are deficient, that can supply their place by the intervention of assisting instruments. Where reason pre- vails, we find that it scarcely matters what the organs are that give it, direction ; the being furnished with that principle still goes forward, steadily and uniformly successful, breaks through every obstacle, and becomes master of every enterprise. We have seen a man without hands or legs convert by practice his very stumps to the most convenient purposes, and with these clumsy instruments perform the most astonishing feats of dex- terity. We may therefore conclude that it is the mind alone that gives a master to the creation ; and that if a bear or a horse were endowed with the same intellects that have been given to a man, the hardness of a hoof, or the awkwardness of a paw, would be no obstacle to their advancement in the arts of dominion or of social felicity. a. Mind the Seat of Sensations. — So indissoluble is the con- nection of sensation with some distant spot on the surface, that after an arm or a leg has been amputated the patient constantly feels sensation in the lost fingers and toes. In vain, says Mr. G. H. Lewes, experience contradicts the sensation ; in vain he sees that his fingers and toes are not there to feel ; he feels them as distinctly as ever he felt them when they were parts of his living body. Na)^, so urgent is this conviction at times, that men have actually had the feet cut off because of the pain felt there ; and the pain still continuing after the feet were removed, they have had the leg removed from the knee ; this not succeed- ing, they have had the hip-joint removed. Here the seat of injury was not in the foot, but the sensation was referred to the foot. Long after we have learned to refer all sensations to the surface we have but an indistinct conception of the exact spot on that surface where the impression is made ; and through- out life we are totally unable to refer with any accuracy to the particular portions of the viscera, back, neck, and legs, which are affected, whereas the hands, feet, tongue, and face admit of marvelous nicety in this respect. • ph. Mind, The Function of. — Lakes receive water from van-. 2 24 DICTIONARY OF ous sources, and some of the rivers which enter them are tur- bid and muddy. Yet the water which flows out from a lake is limpid and clear as crystal. The reason of this is that the lake precipitates all the sand and mud, and setties it down in deposi- tions of silt. Only water which is bright and pure is sent forth.;^ Now the human mind resembles the lake in that the informa- tion which it receives comes to it, hke streams, from all sorts of sources, pure and impure. Like the lake, it can arrest the further circulation of whatever is bad and base. It can filter everything which passes through it. It can insist that any stream of influence which issues from it shall be pure and good, and free from all that is of the earth, earthy. ad. Mind Requires a Healthy Atmosphere, The Vigorous. — A weak enervated mind may live in a sickly atmosphere of cant or artificiality, which would be incompatible with the life of a healthy mind. In this case, weakness and enervation, paradoxical as it appears, are able to endure more than strength and vigor^_W\ sparrow left in a bell-glass, to breathe over and over again the same air, will live in it for upward of three hours ; but at the close of the second hom", when there is con- sequently still air of sufficient purity to permit this sparrow's breathing it for more than an hour longer, if a fresh and vigorous sparrow be introduced, such an one will, expire almost immedi- ately. The air which would suffice for the respiration of the one sparrow suffocates another.^ Nay more, if the sparrow be taken from the glass at the close of the third hour when very feeble, be restored to activity and to sufficient vigor to fly about again, and then once more in its now healthy state introduced into the atmosphere from which it was taken, it will perish im- mediately. The poisonous action of a A-itiated air is better resisted by the feeble sickly organism than by the vigorous healthy organism. ph. Mind in an Atom, A. — The mind does not demand a vast theater as the scene of its operations. Its essential glory is not bound up with vast mechanical mo\-ements, but is revealed by the quality of acts. What is more interesting than an examina- SCIENTIFIC ILLUSTRATIONS. 225 tion, by means of a first-rate microscope, of a tiny atom that inhabits almost every clear ditch — the Melicerta ? The small- est point which you could make with the finest steel pen would be too coarse and large to represent its natural dimensions ; yet it inhabits a snug little house of its own construction, which it has built up stone by stone, cementing each with perfect sym- metry, and with all the skill of an accomplished mason, as it proceeded. It collects the material for its mortar, and mingles it ; it collects the material for its bricks, and molds them ; and this with precision only equaled by the skill with which it lays them when they are made. As might be supposed with such duties to perform, the little animal i» furnished with an appa- ratus quite unique, a set of machinery to which, if we searched through the whole range of beasts, birds, reptiles, and fishes, and then by way of supplement examined the five hundred thousand species of insects to boot, we should find no parallel. The whole apparatus is exquisitely beautiful. The head of the pellucid and colorless animal unfolds into a broad transpa- rent disk, the edge of which is molded into four rounded seg- ments, not unlike the flower of the heart's-ease, supposing the fifth petal to be obsolete. The entire margin of this flowerlike disk is set with fine vibratile cilia : the current produced runs uniformly in one direction. Thus there is a strong and rapid set of water round the edge of the disk, following all its irregu- larities of outline, and carrying with it the floating particles of matter, which are drawn into the stream. At every circumvo- lution of this current, however, as its particles arrive in succes- sion at one particular point, viz., the great depression between the two uppermost petals, a portion of these escape from the revolving direction, and pass off in a line along the summit of the face toward the front, till they merge in a curious little cup- shaped cavity seated on what we may call the chin. This tiny cup is the mold in which the bricks are made one by one as they are wanted for use. The hemispherical interior is ciliated, and hence the contents are maintained in rapid rotation. These contents are the atoms of sedimentary and similar matter which 2 26 DICTIONARY OF have been gradually accumulated in the progress of the ciliary current ; and these, by the rotation within the cup becoming consohdated, probably also with the aid of a viscid secretion elaborated for the purpose, form a globular pellet, which as soon as made is deposited, by a sudden inflection of the animal, on the edge of the tube or case at the exact spot where it is wanted. The entire process of making and depositing a pellet occupies about t'hree minutes. We say nothing about the other systems of organs contained in this living atom — the arrangements des- tined to subserve the purposes of digestion, circulation, respira- tion, reproduction, locomotion, sensation, etc., though these are all more or less clearly distinguishable in the tissues of the ani- mal, which is as translucent as glass. " For the moment," says Mr. Gosse, " I ask attention only to the elaborate conformation of organs which I have briefly described, for the special pur- pose of building a dwelling. No description that I could draw up, however, could convey any idea approaching to that which would be evoked by one good sight of the little creature actu- ally at work — a most charming spectacle, and one which, from the commonness of the animal, and the ready performance of its functions under the microscope, is very easy to be attained." It is impossible to witness the constructive operations of the Melkerta without being convinced that it possesses mental faculties, at least if we allow these to any animals below man. If when the chimpanzee weaves together the branches of a tree to make himself a bed ; when the beaver, in concert with his fellows, gnaws down the birch saplings, and collects clay to form a dam ; when the martin brings together pellets of mud, and arranges them under our eaves into a hollow recep- tacle for her eggs and young — we do not hesitate to recognize mind— call it instinct, or reason, or a combination of both — how can we fail to see that in the operations of the invisible animalcule there are the workings of an immaterial principle ? There must be a power to judge of the condition of its case, of the height to which it must be carried, of the time when this must be done ; a will to commence and to go on, a will to leave SCIENTIFIC ILLUSTRATIONS. 227 off (for the ciliary current is entirely under control) ; a conscious- ness of the readiness of the pellet ; an accurate estimate of the spot where it needs to be deposited (may I not say also, a mem- ory where the previous ones had been laid, since the deposition does not go on in regular succession, but now and then, yet so as to keep the edge tolerably uniform in height ?), and a will to determine that there it shall be put. But surely these are men- tal powers — -yet mind animating an atom so small that your eyes strained to the utmost can only just discern the speck in the most favorable circumstances, as when you hold the glass which contains it between your eye and the hght, so that the ray shall illuminate the tiny form while the background is dark behind it! ro. Minute, The Mighty in the. — The circulation of the ocean, its phosphorescence, and the coloration of certain seas, make known but imperfectly what can be accomplished by the incalculable numbers, the prodigious fecundity, and the devour- ing activity of the minute animals, scarcely perceptible individu- ally, and of so elementary an organization, with which it teems. Yet geology demonstrates that it was they which laid the foun- dation of animal life in that immense cradle, that inexhaustible nursery (as Maury calls it) ; it is they which maintain a never- varying identity in the composition of its waters, absorbing and elaborating the mineral and organic properties with which these are incessantly loaded. There are some which serve as the food of stronger and superior species, the mollusks and the radiates ; these in their turn nourish the fish and crustaceans, which are themselves devoured, either by far larger fishes or by the cetaceans and amphibians. There are others — indefatigable architects — which construct the fantastic edifices that from the depths of ocean mount to its very surface, and spread afar, ram- ify, and terminate in coral reef and islands. Others, finally, by dying, have accumulated at certain points their silicious or cal- careous wrecks, and formed numerous banks and shallows, and entire beds of deposit, where the geologist to-day may study these first-born of creation. my. 2 28 DICTIONARY OF Minute, The Vast in the. — ^^'e discourse about the little and the great; but these are relative terms. A thing which we may call little a philosopher may declare contains in itself the basis of all life and the germ of worlds. Take, for instance, such an insignificant thing as the stinging-nettle which you are about to tread beneath your feet. Professor Huxley will speak with you about that nettle in a manner which will invest it with astonishing interest forevermore. He commences by telling you that that common nettle owes its stinging property to the innumerable stiff and needlelike though exquisitely delicate hairs which cover its surface ; that each stinging-needle tapers from a broad base to a slender summit, which, though rounded at the end, is of such microscopic fineness that it readily pene- trates and breaks off in the skin. The whole hair, he says, con- sists of a very delicate outer case of wood, closely applied to the inner surface of which is a layer of semi-fluid matter, full of innumerable granules of extreme minuteness. This semi- fluid is protoplasm (the physical basis of life), which thus con- stitutes a kind of bag full of a limpid liquid, and roughly cor- responding in form with the interior of the hair which it fills. When viewed with a sufficiently high magnifying power, the protoplasmic layer of the nettle-hair is seen to be in a condi- tion of unceasing activity. Local contractions of the whole thickness of its substance pass slowly and gradually from point to point, and give rise to the appearance of progressive wa\'es, just as^the bending of successive stalks of corn by a breeze pro- duces the apparent billows of a corn-field. But in addition to these movements, and independently of them, the granules are driven in relatively rapid streams through channels in the pro- toplasm which seem to have a considerable amount of persis- tence. Most commonly the currents in adjacent parts of the protoplasm take similar directions, and thus there is a general stream up one side of the hair and down the other. But this does not prevent the existence of partial currents which take dif- ferent routes ; and sometimes trains of granules mav be seen coursing swiftly in opposite directions, within a twenty-thou- SCIENTIFIC ILLUSTRATIONS. 229 sandth of an inch of one another; while, occasionally, opposite streams come into direct collision, and after a longer or shorter struggle one predominates. The spectacle afforded by the won- derful energies prisoned within the compass of the microscopic hair of a plant, which we commonly regard as a merely passive organism, is not easily forgotten by one who has watched its display, continued hour after hour, without pause or sign of weakening. Currents similar to those of the hairs of the nettle have been observed in a great multitude of very different plants, and weighty authorities have suggested that they probably occur in more or less perfection in all young vegetable cells. If such be the case, the wonderful noonday silence of a tropical forest is, after all, due only to the dullness of our hearing ; and could our ears catch the murmur of these tiny maelstroms as they whirl in the innumerable myriads of living cells which constitute each tree, we should be stunned as with the roar of a great city. l. s. Mistaken Identity — The yellow gum-tree of Western Australia has been compared to a tall native black man with a spear, and to those who have seen it the resemblance is com- plete. The author of " Gatherings of a Naturalist in Australia " says that he has even seen a fellow-traveler "cooing" to one of these trees to make an inquiry. For this reason the trees are often called " Blackboys.'' There have been in England cases of mistaken identity quite as amusing. For instance, there has sometimes been observed in a court of law a man dressed up in all the habiliments of a judge, and sitting as a judge would be ex- pected to sit. Counsel has been heard professionally " cooing " to him, yet all the time the gentleman has been only a jester, or an advocate, and no more a judge than the yellow gum-tree was a black boy. The great Tichborne trial was a good illus- tration of this kind of thing. The position in which a tree or a man is placed, and outside appearances, often conspire to produce an hallucination. G. Moral Relapse. — The pansy only develops its beauty under cultivation, and when neglected soon relapses into its native 230 DICTIONARY OF condition. There are men who keep conspicuously moral so long as they are constantly cultivated by their minister, but who relapse into their former httleness if his care is withdrawn. Such men, like the pansies, give a deal of trouble. But if you want to exhibit either them or the flower, you have no option but to give them constant cultivation.-rl Whether the result, in either case, is worth the trouble is another matter. b. f. Moral Sentinels The Trigonocephalus, or lance-headed viper, is a most poisonous reptile, common in the West Indian Islands. To warn the natives in the Antilles of his presence, Nature has supplied us with numerous watchful sentinels in the small birds, whose not unreasonable hate against this serpent is a remarkable proof of their intelligence. No sooner does the bird, which they have wished to name the nightingale, see from his aerial station the scales of the reptile gliding into the herb- age, or glittering among the large leaves, than he can no longer control himself. He flies to and fro ; he leaps from branch to branch, summoning with a lamentable cry all the feathered tribe from the neighboring trees.J^From far and near the cry widens and is repeated ; from all directions flock nightingales and thrushes, grosbeaks and humming-birds, and hovering above the assassin furiously denounce it, and indicate its lurking-place to man. Irritated by such a concert of maledictions, the ser- pent elevates its crest, but lo ! they are far beyond its reach ! And the cries, the murmurs, the insults are redoubled. It seeks ■to conceal itself, but these cries persistently accompany it. Wherever it drags its slimy, shining bulk, they follow, they harass, and they denounce it. Either night comes on, or it succeeds in completely hiding itself from their watchful gaze, before they reluctantly leave it to its own devices. Great the consternation if their enemy escape them. But what joy, what triumphal sounds, if man appears upon the scene, and slays it ! These birds resemble those moral sentinels in society, the preachers, the teachers, and the philanthropists, who endeavor by their activities and their voices to warn mankind against the insidious movements of " that old serpent the devil." How en- SCIENTIFIC ILLUSTRATIONS. 231 ergetically do these good men perform their noble work ; how wary and indefatigable are they in their labors ; and how exul- tant are they if they can save men from being made victims ! D. Moral Ascendancy, The Advent of. — Contemplate our planet as it must have been when inhabited by the monstrous birds, and reptiles, and quadrupeds which preceded the advent of man. Those were times when animated forms attained dimen- sions which are now wholly exceptionable. That may be de- scribed as the age when physical and physiological forces were dominant, as the force of moral agency dominates over the pres- ent, and is destined, as appearances tend to prove, to dominate more fully hereafter. Can we not recognize an antagonism be- tween the development of brute force and of the quality of mind ? Would it not 'even seem that Nature could not at one and the same time develop mental and corporeal giants ? The physio- logical reign has only declined in order to prepare the advent of moral ascendancy. Giant bodies seem departing from the earth, and giant spirits commencing to rule. Humanity is progressive : is not this progression made manifest by zoological revelations ? The first bone-traces of human beings range back to an epoch posterior to the monstrous quadrupeds entombed in the dilu- vium. Hereafter giants pi'obably will only be seen in the moral world, grosser corporeal giant forms having become extinct. S. N. Moral Truths, The Inextinguishableness of Nothing can be more singular than the manner in which plants spring up on certain occasions. Thus after the great fire of London in 1666, a large portion of the devastated city was in a short time covered with a luxuriant crop of the Sisymbrium Irio, in such profusion that it was calculated that the whole of the rest of Europe did not contain so many specimens of this plant. Again, wherever a salt-spring breaks out at a distance from the sea, its vicinity immediately abounds with salt-plants, although none grew there before. >AVlien lakes are drained, a new vege- tation springs up. Thus when some of those of the Danish 232 DICTIONARY OF island of Seeland were drained, Vilny observed Carex cype- roides springing up, although that species is naturally not a native of Denmark, but of the north of Germany. M'Kenzie, in his North American tour, speaking of the country bordering on the Slave Lake, says : " It is covered with large trees of spruce-pine and white birch ; when these are destroyed poplars succeed, though none were before to be seen." Evelyn notices a fact very similar to this, which is observed in England, in Nova Scotia, and in the United States, that where fires have destroyed the original wood the new saplings which spring up are generally different species of trees. All these phe- nomena indicate the inextinguishableness of vegetable vitality ; and on this point they may be employed to typify the inextin- guishableness of moral truths in our world. No fires of insur- rection, no deluges of persecution, no changes in the forms of human society by kings, or priests, or mobs, have ever had the effect of obhterating moral ideas. They are inextinguishable, and spring up unaccountably in perennial beauty despite all social conflagrations and convulsions. s. Morality Affected by Weather We are played upon by external influences. Vice may be developed by the breezes. Atmospheric changes may affect even the human mind. For example : the police of Buenos Ayres are well acquainted with the fact that quarreling and bloodshed are much more frequent when the wind blows from the north. 1^ Sir W^oodbine Parish informs us, in his narrative of a visit to that place, that a sort of moral derangement prevails while that wind continues. This wind produces headache and disorder of faculty to a great ex- tent, and, of course, leads to increase of crime with all classes of persons who are accu.stomed readily to yield to their bodily impulses. No' doubt the cause as regards Buenos Ayres arises from some malaria engendered in the marshes over which the wind passes. That the cause is chemical is proved by its effects on meat, which soon becomes putrid when exposed to it. The milk also is quickly spoiled, and the bread baked during its con- tinuance is always bad. U. SCIENTIFIC ILLUSTRATIONS. 233 Morality, The Relation of Food to. — The eating by man of bad food, or of good food which is badly assimilated, will account for much of the misery and many of the crimes of the world. Some of the barbarous theology of mankind may be traced to indigestion. The want of food has often supplied the motive for wars and riots. That fasting, even when under the supposed authority of religion, kindles the murderous pas- sions in those who are not habituated to self-control and the devotedness of holy motives, is largely exemplified by the in- formation of those who have traveled in superstitious countries. Thus the author of " Eothen,'' who is evidently well informed, states that the fasts of the Greek Church produce an ill effect upon the character of the people, for they are carried to such an extent as to bring on febrile irritation with depression of spirits, and a fierce desire for the perpetration of dark crimes. Hence the number of murders is greater during Lent than at any other time of the year. u. Multum in Parvo. — When we look on the tiny harvest- mouse, two of which scarcely weigh a quarter of a dollar, and which brings up its large little family of eight hopeful mouselings in a nest no bigger than a cricket-ball, or the still tinier Etruscan shrew, it greatly enhances our interest to know that every essen- tial organ is there which is in the giant rorqual of a hundred feet. The humming-bird is constructed exactly on the same model as to essentials as the condor ; the little sphasrodactyle, which we might put in a quill-barrel and carry home in the waistcoat-pocket, as the mighty crocodile ; the mackerel-midge, which never surpasses an inch and a quarter in length, as the huge basking shark of six and thirty feet. ro. Murderous though Beautiful.^ — Beautiful, innocent-look- ing creatures are sometimes deadly in their influence. The Liuilia hominivorax is rather more than the third of an inch in length; the, head is large, downy, and of a golden yellow. The thorax is dark blue and very brilhant, with gay reflections of purple. The wings are transparent, yet prettily tinged ; their margins as well as the feet are black. This innocent-looking 234 DICTIONARY OF insect is very beautiful, yet it is an assassin. M. Coquerel has informed us that it sometimes occasions the death of those wretched convicts who have been transported to the distant penitentiary of Cayenne. When this fly gets into the mouth or nostrils it lays its eggs there, and when they are changed into larvae, the death of the victim generally follows. The larvae are lodged in the interior of the nasal orifices and the frontal sinuses, and their mouths are armed with two very sharp man- dibles. They have been known to reach the ball of the eye, and to gangrene the eyelids. They enter the mouth, corrode and devour the gums and the entrance of the throat, so as to transform those parts into a mass of putrid flesh, a heap of corruption. What an emblem are these of the pleasures which, in an unsuspicious form, are apt to fasten themselves upon man ■ — beautiful in appearance, yet ruinous in result ! i. Muscular System, Influence of Modulated Sound upon the. — Travelers inform us that the Arabs are in the habit of teaching goats to stand with their feet close together on the top of several little blocks of wood. The manner in which they accomplish this feat beautifully illustrates the influence of modulated sound on the muscular system, as it appears that, however long the goats may have been used to this exhibition, they succeed only during the playing of a tune. If there be any alteration in the movement or time the goat begins instantly to totter, and the moment the music closes the goat falls. A similar effect is felt by dancers on the tight-rope.] This resem- bles what is felt by vain statesmen when the miisic of flattery ceases. u. Music a Natural Inspiration. — The song of the birds must be the expression of some sentiment ; they surely sing as much for their own pleasure as to charm those who listen to them. When they fill the woods with their melodious accents, they direct their looks on all sides, as if proud of their talents, and desirous of gathering the tribute of admiration to which they feel themselves entitled. Their song varies with the season ; but it is in the early spring their efiEorts are the most successful SCIENTIFIC ILLUSTRATIONS. 235 and we are njost disposed to admire the beauty and harmony of their voicesJ^Can anything be more delicious than the warbling of the linnet, the piping of the goldfinch, slowly swelling from die leafy bower, or the melodious cadence of the nightingale as it breaks the silence of the woodland during the serene nights of leafy June ? re. Musical Taste, Caprices of. — Moufet relates that in cer- tain regions of Africa the crickets [Gryllus) are objects of com- merce. They are brought up in little cages, as we do canary- birds, and sold to the inhabitants, who like to hear their amo- rous chant. This song lulls them to sleep. It would be quite irritating to the ears of persons trained to more melodious sounds. But there is no absolute standard of music in the world. That which some persons consider melody others would deem discord. > There are caprices of musical taste which enable people to enjoy the chirping of crickets and the piano and song of the conventional boarding-school young lady. I. Mutual Cooperation. — The animal inhabitant of the Finna marina is a blind slug surrounded with numerous enemies, and particularly obnoxious to the Sepia., or cuttlefish, who watches the motion of the pinna, and no sooner does the latter open his bivalve shell, which occasionally exceeds two feet in length, than he rushes upon him like a lion. It will naturally be asked how such a blind, defenseless creature can either procure food or protect himself from the attack of his implacable enemies. A kind of crab-fish, naked like the hermit, and very quick-sighted, is. the constant companion of the Pinna marina. They live and lodge together in the shell which belongs to the latter. When the pinna has occasion to eat, he opens his valves, and sends out his faithful purveyor to procure food. If any foe ap- proaches, the watchful crab returns with the utmost speed and anxiety to his blind protector, who, being thus warned of dan- ger, shuts his valves, and escapes the rage of the enemy ; when, on the contrary, the crab loads himself with booty, he makes a gentle noise at the opening of the shell, which is closed during 236 DICTIONARY OF his absence, and when admitted the two friends feast together on the fruits of hisriftdusfey:, ph. Mutual Attraction, The Principle of The self-lumi- nous stars which so thickly stud the heavens are probably but the centers of numberless other systems, for it is placed beyond dispute that there is no one mass of matter positively isolated, but that all are alike influenced by extraneous bodies, subject to the same unerring law. This law pervades the universe, and is the principle of mutual attraction, by which these floating worlds, acting and reacting on each other, are buoyed up for- ever in the aerial ocean of space. mar. Mystery, The Veil of. — The veil of mystery hides from our gaze, not only our own future, but our very origin. It envelops the whole problem of life. If we trace animal and physical nature to their beginnings, we come to the borders of a kingdom shrouded in mystery. We meet in the Protista forms of organic life whose characteristics are so indefinite as to make it impossible for us to decide whether the}r are vegeta- bles or animals ; they are organisms without organs. If we try to lift the veil of mystery from protoplasm, we can discover nothing more than that it is a naked contractile mass of seem- ingly homogeneous jelly, the substratum for all the life-move- ments of the lowest living things. No one can detect any rigid line which separates what we call life from that which we sup- pose to have no hfe. The veil of mystery prevents our finding any absolute barrier between the living and the not hving. We know nothing of an absolute commencement of life. The veil of mystery hides all the primordial collocations. However much we may wish it, we cannot be present at the genesis of life ; the veil is still there. The gradual transition from the not hving to the living is ever hidden from our view by its mysterious folds. b. l. Name Adheres, Though Undeserved, a Bad. — Give a man a bad name, and no one credits him with the many good things he does. Give an animal a bad name, and people omit to notice whether it be appropriate and just. The ass is al- SCIENTIFIC ILLUSTRATIONS. 237 ways esteemed as the stupidest of animals, yet if one be shut up in the same inclosure with half a dozen horses of the finest blood, and theyparrty^ escape, it is infallibly the poor donkey that has led the way. It is he alone that penetrates the secret of the bolt and latch'J5%nd he may be often seen snuffing over a piece of work to which all other animals are incompetent, p. Nastiness its own Defense. — The skunk, being slow of motion, can be easily overtaken and captured ; but neither man nor dogs care to go near it. It is comparatively safe from them by reason of the filthy and noisome stench which it has the power to discharge at pleasure, a stench which is supposed to be one of the most powerful in Nature, and so durable that it will remain for days.;^ It is so horrible as in some cases to produce actual illness. And the creatiure has the power to eject the irritant fluid which contains it to a distance upward of five feet. We have seen men and women in society who have de- served punishment for their offenses, but who have nevertheless remained safe because, like the skunk, they were too nasty to attack. The ordinary rules for the pvu'suit and chastisement of wrong-doers did not apply to their case. Had they been cleaner natures they might have been castigated according to their deserts. Constituted as they were, even the dogs of the law refused to follow their loathsome track, and all pure men stood aloof from the work. Of such beings we may say that they have been exceptionally safe because they were exception- ally pestiferous. ' mu. Nasty, The Conquests of the. — The burrowing owl, which flies by day, derives its name from the place where it makes its nest in the pampas of South America, or the prairies of North America. It does not dig buiTows for itself, but simply takes possession of those belonging to other animals after having driven them away by its disgusting odor. This is its mode of conquering a territory .t' There are some men who seem to push their way in life by the power which they possess of making themselves objectionable. They do not enjoy sufficient genius to command influential positions, yet they acquire them ; and 238 DICTIONARY OF their compeers make Avay for them. It is because of their in- sufferable offensiveness. The persons around them cannot work with them or near them ; they resign, and the burrowing-owl man obtains the place he wants/ He is keen enough to know the situation which he does want, and he makes for it. He does not need to do any struggling or fighting. There is that in him which drives others away and leaves him master, re. Natural Selection. — Natural selection, or the survival of the fittest, does not necessarily include progressive develop- ment ; it only takes advantage of such variations as arise and are beneficial to each creature under its complex relations of hfe.4.' And it may be asked. What advantage, so far as we can see, would it be to an infusorian animalcule, to an intestinal worm, or even to an eartliworm, to be highly organized ? If it were no advantage, these forms would be left by natural selec- tion unimproved or but little improved, and might remain for indefinite ages in their present little-advanced condition, o. Nature's Plans, The Completeness of. — Philosophy teaches us when the little snowdrop, which in garden walks is seen raising its beautiful head to remind us that spring is at hand, was created, that the whole mass of the earth, from pole to pole, and from circumference to center, must have been taken into account and weighed in order that the proper degree of strength might be given to the fibers of even this little plant. > Botanists tell us that the constitution of this plant is such as to require that, at a certain stage of its growth, the stalk should bend and the flower should bow its head, that an operation may take place which is necessary in order that the herb should produce seed after its kind ; and that after this, its vegetable j health requires that it should lift its head again and stand erect.V Now if the mass' of the earth had been greater or less, the force of gravity would have been different ; in tliat case the strength of fiber in the snowdrop, as it is, would have been too much or too little ; the plant could not bow or raise its head at the right time, fecundation could not take place, and its family would have become extinct with the first individual that was SCIENTIFIC ILLUSTRATIONS. 239 planted, because its "seed" would not have been "in itself," and therefore it could not reproduce itself. t. Nature Affords Assistance, The Plan on which. — There are two ways in which Nature affords aid : one is by directly doing the particular thing required ; the other is by giving a crea- ture the power to perform it himself. And as a rule Nature refuses to do for a creature that which she has endowed him with power to do for himself. ^Jln^ the Arctic regions, where the cold of winter is intense, Nature has furnished most animals with an efficient protection against its influence. She has given its warm coat of fur to the bear, and has provided the whale and walrus with a stratum of blubber, whose non-conducting pow- ers enable the animals to retain their vital warmth in a medium which would seem to be inconsistent with life. All animals, except man, in fact, are provided with more or less covering to enable them to resist coldffi,nd accordingly we find that where they are naturally the inhabitants of countries exposed to con- siderable varieties of temperature, they appear to suffer very little inconvenience during the winter. Not so man ; utlpro- vided with any natural covering to shelter him from the chill- ing influence of a wintr)? atmosphere, ^ra must have become to a certain extent a hybernating animal, had not his reason and his industry supplied him with clothing and fire to protect him from cold, ij Nature for this purpose was content with bestow- ing on him the compensating faculty of reason, leaving the rest to his own ingenuity and diligence. s. Nature's Marvelous Prevision. — When a coral reef, says Chamisso, is of such a height as to be almost wholly uncovered at low water, the zoophytes discontinue their toils. Below the line which they have traced you then discover a continuous stony mass, composed of shells, mollusks, and Echinidce, with their bristling spikes and fragments of coral connected by a calcareous sand proceeding from the pulverization of the shells. It often happens that the heat of the sun penetrates this cal- careous mass when it is dry, and causes it to spht open in many places ; the waves then possess sufficient force to divide it into 240 DICTIONARY OF blocks of coral about six feet long by three or four and a half feet broad, and to hurl them upon the reef; this operation ter- minates in the elevation of such a crest that the high tides only wash over it at certain ^ periods of the year. The calcareous sand does not experience any further change, and offers to the seeds brought thither by the waves a soil wherein vegetation flourishes with sufficient rapidity to speedily overshadow its dazzling white surface. Whole trunks of trees, transported by the rivers from other' countries and other islands, find there at length, after a protracted voyage, a resting-place. Some small animals, such as insects or lizards, are conveyed among them, and usually become the first inhabitants of these reefs. Even before the trees are thick and leafy enough to form a wood, the sea-birds build their nests among them ; stray terrestrial birds seek refuge in the copses ; and finally, long after the polyps have accomplished their work, man appears and erects his hut on the fertile soil. my. Nature is a Book. — Nature is a book, and a most profound and splendid book. Those who will read it will be completely fascinated and wisely taught. To one who looks abroad to contemplate the agents of Nature as he sees them at work upon our planet, no expression uttered nor act performed by them is without meaning. By such a one the wind and rain, the vapor and the cloud, the tide, the current, the saltness and depth, and warmth and color of the sea, the shade of the sky, the tempera- ture of the air, the tint and shape of the clouds, the height of the tree on the shore, the size of its leaves, the brilliancy of its flowers — each and all may be regarded as the exponent of cer- tain physical combinations, and therefore as the expression in which Nature chooses to announce her own doings, or, if we please, as the language in which she writes down or chooses to make known her own laws. To understand that language and to interpret aright those laws is at once delightful and profitable. No fact gathered in such a field as this can, therefore, come amiss to those who tread the walks of inductive philosophy, for in the handbook of Nature every such fact is a syllable ; and SCIENTIFIC ILLUSTRATIONS. 241 it is by patiently collecting fact after fact, and by joining sylla- ble after syllable, that we may finally seek to read aright from the great volume which the mariner at sea and the philosopher on the mountain see spread out before tliem. t. Nature, Purity of Vesture a Principle in — Purity of ves- ture seems to be a principal precept of Nature, and observable throughout creation. Fishes, from the nature of the element in which they reside, can contract but little impurity. Birds are unceasingly attentive to neatness and lustration of their plu- mage. All the slug race, though covered with slimy matter cal- culated to collect extraneous things, and reptiles, are perfectly free from soil. The fur and hair of beasts in a state of liberty and health are never filthy or sullied with dirt. Some birds roll themselves in dust and occasionally cover themselves with mire ; beasts have the same habit ; but this is not from any lik- ing or inclination for such things, but to free themselves from annoyances, or to prevent the bites of insects. The Meloe and some of the Scarabai, upon first emerging from their winter's retreat, are commonly found with earth clinging to them ; but the removal of this is one of the first operations of the creature ; and all the beetle race, the chief occupation of which is crawl- ing about the soil and such dirty employs, are, notwithstanding, remarkable for the glossiness of their covering and freedom from defilements of any kind. j. Nature, The Music of. — Birds associate themselves with all sounds and voices, add their own poesy, their wild and sim- ple rhythms. By analogy, by contrast, they augment and com- plete the grand effects of Nature. To the hoarse beating of the waves the sea-bird opposes his shrill strident notes ; with the monotonous murmurings of the agitated trees the turtle- dove and a hundred birds blend a soft sad cadence ; to the awakening of the fields, the gaiety of the country, the lark responds with his song, and bears aloft to heaven the joys of earth. Thus then everywhere, above the vast instrumental concert of Nature, above her deep sighs, above the sonorous waves which escape from the divine organ, a vocal music springs 242 DICTIONARY OF and detaches itself — that of the bird almost always in vivid notes, which strike sharply on this solemn base with the ardent strokes of a bow. t. b. Nature's Secrets, Man's Power to Elicit. — By the aid of Brooke's invention the entire orography of the Atlantic has been mapped out with sufficient exactness. This most simple instrument has already rendered unappreciable service? to science. The bed of the ocean has been explored to a depth of fourteen thousand and fifteen thousand feet ; and specimens, perfectly intact, have been collected of the wreck of shells and zoophytes with which it is carpeted. my. Nature's Method of Developing New Races. — A breeder, says Lyell, finds that a new race of cattle, with short horns or without horns, may be formed in the course of several genera- tions by choosing varieties having the most stunted horns as his stock from which to breedipso Nature, by altering in the course of ages the conditions of life, the geographical features of a country, the climate, the associated plants and animals, and consequently the food and enemies of a species and its mode of life, may l)e said by this means to select certain ^-arieties best adapted for this new state of things. Such new races may often supplant the original type from which they may have diverged, although that type may have been perpetuated without modification for countless anterior ages in the same region, so long as it was in harmony with the surrounding con- ditions then prevailing. s. l. Nature, The Laboratory of Organic— It is in plants that the true laboratory of organic Nature resides : carbon, hydrogen, ammonium, and water are the elements they work upon ; and woody fiber, starch, gums, and sugars on the one hand, fibrin, albumin, caseum, and gluten on the other, are the products that present themselves as fundamental in either organic kingdom of Nature — products, howe\-er, which are formed in plants, and in plants only, and merely transferred by digestion to tlie bodies of animals. The vegetable world is the great originator and source of that pabulum which is necessary for the existence of SCIENTIFIC ILLUSTRATIONS. 243 animals. Animals use the materials which are elaborated for them. They alter tliem by degrees ; they destroy or decom- pound them ; they bring them back toward the state of car- bonic acid, water, azote, and ammonia, a state which admits of their ready restoration to the air. b. l. Nature is Upheld by Antagonisms. — The great primary object which Nature intended to serve by the universal diffu- sion of the grass seems to be the protection of the soil. Were the soil freely exposed to heaven without any organic covering it would speedily pass away from the rocks on whose surface it is deposited. The floods would lay bare one district and encumber another with accumulated heaps ; the sun would dry it up and deprive it of all its noiuishing constituents ; the winds would scatter it far and near, and fill the whole atmosphere with its blinding, choking clouds.^^ It is impossible to imagine all the disastrous effects that would be produced over the whole earth were the disintegration of the elements not counteracted by the conservative force of vital growth, and the destructive powers of Nature not kept in check by the apparently insignifi- cant but actually irresistible emerald scepter of the grass. The earth would soon be deprived of its vegetation and inhabitants, and become one vast desert catacomb, a gigantic lifeless cinder, revolving without aim or object round the sun. b. Nature's Police, Some of. — So numerous are the " green- oak moths " that their progeny would shortly devastate a forest were they not subject to the attacks of another insect. This insect is a little fly, of a shape something resembling that of a large gnat, and which has, as far as we know, no English name. Its scientific title is Empis. There are several species of this useful fly, one attaining some size ; but the one that claims our notice just at present is the little empis, scientifically Empis tes- sellata. He is a terrible fellow, this empis, quiet and insignifi- cant in aspect, with a sober brown coat, thin and genteel legs, and just a modest little tuft on the top of his head. But sad is it for the gay and very green insect that flies within reach of this very estimable individual ! The great hornet that comes 244 DICTIONARY OF rushing by is not half so dangerous for all his sharp teeth and his terrible sting. The stag-beetle may frighten our green young friend out of his senses by his truculent aspect and gigantic stature. But better a thousand stag-beetles than one little empis. For when once the thin and genteel legs have come on the track of the litde moth, it is all over with him. Claw after claw is hooked on him, gradually and surely the clasp tightens, and when once he is hopelessly captured, out comes a horrid long bill and drains him dry. c. o. Nemesis, The Dastard's. — The pike is reputed to be afraid of the perch, its strong prickly spines deterring him from attack- ing so well armed a prey. And in proof of this assertion it is said that if an angler has been unsuccessfully attempting to catch a pike, he can mostly succeed by taking a rather small perch, cutting off its prickly fins, and using it as bait. The pike, seeing that the perch is defenseless, will not lose so excellent an opportunity, : he accordingly darts at the bait and is straight- way hooked. L Here is a parallel to a transaction constantly seen in commercial circles. A dastard, when he sees it defense- less, will often attack a creature of which, at any other time, he lias been afraid. But this truculence sometimes leads him to his own ruin. For Nemesis angles for him with the victim which he desires, and then captures him in the moment when he is about to gratify himself by appropriating it. Intriguers, wreckers, adventurers, and money-lenders, beware ! The waters of human life have snares even for your rapacity. f. Nervousness Initiates Bad Policy. — The great enemy of the earthworm is the mole. The pewit bird knows this, and in order to make the worms fancy a mole is near, it taps the ground with one leg. No sooner do the worms perceive a vibration or shaking motion in the earth than they make the best of their way to the surface, and thus constantly fall into greater and more certain peril, as die pewit feeds on those he catches. How many nervous persons, through yielding to un- necessary terrors, in like manner frighten themselves away from situations of comparative safety into the very presence of need- less dangers ! j hi. SCIENTIFIC ILLUSTRAriONS. 245 Nonchalance Assumed as a Stratagem. — The dark and somber litde bee termed Mellinus an Of evil things everywhere, the eggs should be destroyed. Some- times it is necessary to employ objectionable beings to do the business. We must, therefore, tolerate such, for the sake of the work which they accomplish. It is preferable to endure even an upstart magistrate and a vulturelike policeman than it is to have nests of crime left to incubate in the midst of our popula- tion. :f- A. Offensiveness the Aliment of Some. — There are men whose livelihood is obtained by performing acts which, even were they necessary, are simply offensive to think of. Their subsistence is derived often from sources which are morally offensive. The cheating lawyer, the swindling accountant, the dishonest beggar, are of this tribe. Their food is obtained by means, and is made up of things, which clean creatures could 248 DICTIONARY OF not touch ; and they do not scruple to rob even those who are of their own horrible nature. They are in one respect worse than the caracara of South America, for in gratifying its great appetite for snakes it does not injure mankind ; but they resem- ble it in the versatility of their depraved tastes, for it does not confine itself to this diet, but feeds indifferently upon carrion, insects, and Mollusca, and also, like many vultures, attacks quite new-born lambs. According to some writers, the caracaras, like mean men, are not above taking their prey at second hand ; they are said to watch for one of the vultures returning from his repast of carrion, when they fly out upon him and pursue him until he finds it necessary to disgorge his food, upon which the conspirators immediately descend, like a number of schemers and rogues, whose disgusting taste for oflensiveness and capa- city to enjoy all sorts of prey have stimulated them to the suc- cessful plunder of some one who is less wary than themselves. IL. Officious Services, The Routine of. — The honey-guides (indicators) are little birds inhabiting the interior of Africa. They feed on insects, and especially dehght in the pupae of bees. They employ very curious manoeuvers in order to pro- cure them, which denote perfect intelligence. When one of these birds discovers a hive, it endeavors to attract the atten- tion of the first person it meets by frequently repeated cries. When observed, it proceeds to fly till it reaches the place where the hive is, sometimes a great distance, and it takes care to point it out by every means in its power, for which service the Hottentots esteem the indicators so highly that they scruple to kill them. While the honey is being taken, the bird remains in the neighborhood, observing all that passes, and when that work is accomplished, it approaches to reap the fruit of its trouble, the pupae of the bees. The bees flutter about trying to sting it, but its skin is impervious to their efforts. Often, however, the despoiled bees attack its eyes, and sometimes suc- ceed in bhnding it ; the unfortunate bird, incapable of guiding itself, then perishes 1 in sight of the place which witnessed its SCIENTIFIC ILIUSTRAriONS. 249 triumph. Here is an epitome of the officious services of inter- meddlers. Whether among birds and bees, or among men and women, the routine of this class of oflficiousness is always the same. The intermeddler comes forward without any apparent selfishness, and shows us how to secure a real benefit for our- selves. We accept his guidance, and feel greatly indebted to him for his kindness. Presently we find out that he only had his own personal ends in view all the time, and that, though we may have been benefited, he was never in the least concerned about that matter. Then, we have the unpleasantness of beholding him getting into a scrape in connection with the same transaction. Officious intermeddlers are generally not very thin-skinned, so that we are able sometimes to see them get out of their scrape without real injury ; but sometimes they get terribly hurt and, it may be, ruined. In that case, unlike the honey-guides, they put all blame for their calamity upon our shoulders, and, without referring to their own selfishness, or to the fact that they make us their cat's-paw, protest that their ruin has come upon them by reason of their good nature in doing us a good turn. A man who has self-respect, and who is sensitive to the sufferings of others, had better always avoid officious intermed- dlers. If the honey of life cannot be obtained without their aid, it is best to leave it alone. RE. Opportunists, The Not only some men, but also some of the lower creatures, are endowed by Nature with a wonder- ful faculty for triumphing over unpropitious circumstances and seizing favorable opportunities. For example, the Gordiacea, or hairworms, live as parasites in the bodies of various species of insects. When mature, they quit the bodies of the insects at whose expense they have been nourished, and seek some piece of water or moist situation, where they deposit their ova in long chains. If by any chance, on breaking out of their insect home, they find that dry weather has produced a state of things incompatible with their notion of comfort, they quietly allow themselves to be dried up, when they become perfectly hard and brittle ; but, strange to say, the moment a shower of rain 2 50 DICTIONARY OP comes to refresh the earth with its moisture, the dormant hair- worms immediately recover their activity, avail of the^ new op- portunity, and start off in search of a suitable placd.in which the great object of their visit to solid earth may be effected. N. D. Opportunity, The Power of. — The opportunity often makes the man. No personal praise is due to some men for having vigorous and well-developed minds, and in other cases no per- sonal blame is due to those who are feeble and inapt. The question is. What is the opportunity which the individual has had ? "Now there are many minds which have been dwarfed and stunted by circumstances, though possessing in themselves spkndid powers which only needed proper opportunity to de- velop. So also there are minds which have expanded to sur- prising proportions in consequence almost entirely of the oppor-, tune influences by which they have been surrounded. The op- portunity is to the man what the climate is to the vegetable. For example : in the forests of Brazil vegetation remains in a state of continual activity because excited by the ceaseless action of the two agents, humidity and heat. Hence certain vegeta- ble forms, which' assume in our land very humble proportions, present I themselves with a floral pomp unknown in temperate climesS^some Boraginacea become shrubs ; many Euphorbia assume the proportions of majestic trees, offering an agreeable shelter under their thick umbrageous foliage. And while we are thus noticing this powerful effect of opportunity, in forma- tion and development, the observation naturally occurs that, as regards mankind, we are obviously unable to form any ade- quate conception of man's potentialities from what we see of him in his present condition ; for it may well be that under a new state of circumstances, in another world, he may be able to exhibit powers and \drtues which fail to flourish here, but which amid congenial influences will become grand and glorious. v. Opportunity, The Selection of — When it is wished to in- troduce into a hive of bees a stranger queen bee, after having SCIENTIFIC ILLUSTRATIONS. 251 removed the original queen bee, every precaution must be used before putting her into the common home. It is only after some time that the bees become aware of the disappearance of their queen ; but they then manifest great emotion. They run hither and thither as though mad, leaving off their work, and making a peculiar buzzing sound.^ If you return to them their original sovereign, they recognize her, and calm is immediately restored. But the substitution of a new queen for the original sovereign does not produce the same effect in every case. If you intro- duce the new queen half a day only after the removal of the old queen, she is very badly received, and is at once surrounded, the workers trying to suffocate \\ffijpX^trL>txdXbj she sinks under this bad treatment. But if you allow a longer interval to elapse before you introduce the substitute, the bees, rendered intrac- table by the delay, are better disposed toward her. If you allow an interregnum of twenty-four hours, the stranger queen is al- ways received with the honor due to her rank, a general buzz- ing announcing the event to the whole population of the hive. They assign to their adopted queen a train of picked atten- dants, and draw up in line on her passing by ; they caress her with the tips of their antennae ; they offer her honey.* A little joyful fluttering of the escort announces that every one in the little republic is satisfied. The labors out of doors and indoors then begin anew with more activity than ever. It is with bees as with mankind : " There is a season when to take occasion by the hand." For want of recognizing this fact many a good enterprise in human government has been utterly wrecked. The premature appearance of a hero among men has often resulted in his annihilation. Reformers should learn that there is an appropriate moment for the introduction of any change, i. Opposite Qualities Often Found in the Same Substance. — In contemplating Nature we shall often find the same sub- stances possessed of contrary qualities, and producing opposite effects. Air which liquefies one substance dries up another. Fire, which is seen to burn up the desert, is often found in other places to assist the luxuriance' of vegetation ; and water, 252 DICTIONARY OF which next to fire is the most fluid substance upon earth, never- theless gives all other bodies their firmness and durability. MY. Opposites, The Combination of. — Men of opposite tastes and repugnant sympathies are not unfrequently found in close association and even in actual combination. This apparent anomaly is generally explained by the existence of some object which exerts a powerful moral influence over all within its reach. This object acts upon them somewhat as the porous platinum acts on gases. We know the porous platinum absorbs them, and condenses them so powerfully together into its pores that the atoms of two different gases often approach each other suffi- ciently near to combine together chemically. Hydrogen and oxygen are in this instance compelled to unite, and it can force many other gases, which will not directly combine with each other, to enter into combination. So a noble object draws into the bonds of the closest association individuals who, but for its influence, would remain forever in isolation or perhaps in oppo- sition to each other. Welcome, then, to the combining forces of society ! pr. Opposites, The Resemblance of. — The crocodile's egg will be about two inches and five lines in its greatest diameter, and in its least diameter one inch and eleven lines ; o\-al and whi- tish. It is cretaceous in substance, and like the "eggs of birds. Yet with this resemblance, what a horrid contrast there is ! The egg gets hatched without any attention of the parent ; and in due time, instead of a beautiful singing-bird, it produces an infant crocodile about six inches in length, which ^-ery rapidly becomes a monster fourteen feet long. Its teeth are formida- ble, and the scales on the back are proof against even a bullet from a gun. It is amphibious, and watches even in the night for its prey. Such is the outcome of an egg resembling that of the world's loveliest songstersr) 1 Here we have a lesson upon the resemblance of opposites. Do not be guided only by the shell of things. Consider all the surrounding circumstances. If your egg has not been found in a place associated with ideas SCIENTIFIC ILLUSTRATIONS. 253 of goodness and beauty, but in a suspicious locality, beware lest it belongs to a moral crocodile. Two human faces may look to the uninitiated very much alike, but as the developing period advances, the one character will become harmonious and spiritual, and the other hard, rapacious, and crocodile-like. RE. Opposites, The Transformability of Since the noblest attribute of water is its blandness, who would be prepared to find that, chemically speaking, it is remarkable for its fiery com- position ? When its two constituents are burned in the oxy- hydrogen blowpipe, they produce a flame of extraordinary ferocity. Such is the violence with which they combine that it is necessary to keep them from mingling, except in small quantities, unless they are just at the point of ignition. Dr. Clarke placed a brick screen between himself and the danger- ous gases when he first experimented on their power, but was nearly killed by an explosion. Perhaps, when the world and all the works that are therein shall be burned up, the ocean may really be the magazine from which fuel may be drawn to support the great conflagration. But let this be as it may in God's good counsel, is it not a startling thought that water, the uncompromising adversary of fire, should be compounded of two elements whose conjunction is accompanied by a passion- ate burst of flame and a terrible eruption of caloric ? po. Organ by Disuse of Function, Loss of. — One of the most interesting discoveries of modern science is that of a subterra- nean fauna, all the members of which are bhnd. The transi- tion from the illuminated tenants of this upper world to those darkened subjects of Pluto is indeed facilitated by certain in- termediate conditions. Such is the guacharo, or fruit-eating nightjar, found by Humboldt inhabiting, in immense hosts, a deep sepulchral cavern in South America, shut out far from the remotest ray of hght, coming forth under the cover of night, and invested with superstitious terrors by the natives. Such, too, is the Aspalax or mole of Eastern Europe, which habitually lives underground ; and such is the proteus, a strange sort of 254 DICTIONARY OF salamander found in the lakes of immense caverns in Illyria. They are believed to come from some great central inaccessible reservoir, where no ray of light has ever penetrated, and whence occasional floods may have forced the individuals that have been discovered. Investigations in various parts of the world have revealed the curious circumstance of a somewhat extensive series of animals inhabiting vast and gloomy caves and deep wells, and perfectly deprived even of the vestiges of eyes. Enormous caves in North America, some of which are ten miles in length, and other vast and ramified grottoes in Central Europe, have yielded the chief of these ; but even in Great Britain there are at least four species of minute shrimps, three of which are absolutely blind, and the fourth (though it has a yel- low speck in the place of an eye) probably so. All these have been obtained from pumps and wells in the southern counties of England, at a depth of thirty or forty feet from the surface of the earth. The Mammoth Cave in Kentucky consists of ' innumerable subterranean galleries in the limestone formation, some of which are of great extent. The temperature is constantly throughout the year 59° Fahrenheit. A darkness, unrelieved by the least glimmer of light, prevails. Animals of various races inhabit these caves, all completely blind : for though some have rudimentary eyes, they appear useless for purposes of vision.jf Among these are two kinds of bats, two rats (one found at a distance of seven miles from the entrance), moles, fishes, spiders, beetles, Ci'ustacea, and several kinds of Infusoria. Mr. Charles Darwin has alluded to these singular facts in confirmation of his theory of the origin of species by means of natural selection, or the preservation of favored races in the struggle for life. He takes the view that in the subter- ranean animals the organs of sight have become (more or less completely) absorbed, in successive generations, by disuse of the function. In some of the crabs the footstalk remains, though the eye is gone ; the stand for the telescope is there, though the telescope with its glasses has been lost. As it is difficult to imagine that eyes, though useless, could be in any SCIENTIFIC ILLUSTRATIONS. 255 way injurious to animals living in darkness, we attribute their loss wholly to disuse. On Mr. Gosse's view, we must suppose that American animals, having ordinary powers of vision, slowly migrated by successive generations from the outer world into the deeper and deeper recesses of the Kentucky caves, as did European animals into the caves of Europe. We have some evidence of this gradation of habit ; for as Schiodte remarks, animals not far remote from ordinary forms prepare the tran- sition from light to darkness. By the time that an animal has reached, after numberless generations, the deepest recesses, dis- use will on this view have more or less perfectly obliterated its eyes. ro. Overcrowding, Nature's Provision against The natu- ral safeguard against overcrowding is emigration. We see this beautifully illustrated in the case of the starfish. The larva of the starfish is an active, free-swimming animal, having a long body with six slender arms on each side, from one end of which the young starfish is (so to speak) budded off ; and when this has attained a certain stage of development, the long twelve- armed body separates from it and dies away, its chief function having apparently been to carry the young starfish to a dis- tance from its fellows, and thus to prevent overcrowding by the" accumulation of individuals in particular spots, which would be liable to occur if they never had any more active powers of locomotion than they possess in their adult state. mi. Pain to Pleasure, The Relation of. — Sensation is modified both by the condition of the body and by the state of the mind with regard to it. Thus we find that in the peculiar condition of mind and body attending mesmeric sleep (according to the testimony of honest witnesses, who are to be believed),' persons may have their limbs removed without pain, and the exposed extremities of the divided nerves being roughly handled causes only a sensation of titillation, under which the patient laughs like a tickled child. Pain, indeed, is but the excess of an im- pression which, in a milder form, is pleasure ; and the same degree of impression is either one or the other, according to 256 DICTIONARY OF the State of attention at the time, or according to the associa- tion of the mind. (Ivi many respects pain is really an acquired " feeling, hke fear, and it arises from the mind being taught to associate certain sensations with the idea of danger. Thus when the Esquimaux first had razors given to them, they used to gash their tongues for the pleasure of the new sensation of being cut with so keen an instrument ; but after they learned there was danger in such wounds, they never cut themselves without an expression of pain. '^ u. Pain Terminates in its Contrary, Excessive. — It ap- pears that bodily pain, when excessive, generally terminates in pleasure of a nature and kind just the reverse of that which causes the nervous exhaustion. Thus we are informed that Theodosius, a youthful confessor, was put to such exquisite tor- ture for singing a psalm that he hardly escaped with his life ; but being asked how he could endure such extreme torment, he said, " At first I felt some pain, but afterward there stood by me a beautiful young man who wiped away my sweat, and so refreshed me with cold water that I was delighted, and grieved only at being let down from the engine." These effects of nervous exhaustion may be illustrated by reference to those experiments on the efl[ects of light upon the retina, first men- tioned by Darwin in his "Zoonomia." It is remarkable that the contrary color is produced when, the sight is fatigued; thus if we look with a fixed stare at a bright green figure until a lit- tle wearied, and then look on a white surface, we shall see a red figure. If, however, we continue to look at the red until the nerve is thoroughly exhausted, we shall see green. The direct sunshine quickly exhausts the optic nerve-power, and by looking' on it we become for a time quite blind. It is probable that every part of the nervous system is subject to the same law or mode of action, and the brain under mental excitement, as well as physical, is apt to take a contrary condition, by which ideas are suggested to the mind the very reverse of those which exhausted the attention. u. Panic, The Peril of. — The bison is found only in the great SCIENTIFIC ILLUSTRATIONS. 257 prairies of the American continent. When he is hunted he will frequently turn upon his adversary, and in speed he can outstrip the swiftest horse. jT He finds a formidable enemy in the white wolf. Hunting in packs of one or two hundred, the latter fling themselves upon two or three solitary bisons, and surrounding them, woiTy the huge brutes to death. The bisons, when they catch sight of wolves, manifest the greatest alarm, form into battle array, and are only prevented by excess of terror from tak- ing to flight. This panic-stricken feeling the Indian often turns to his advantage. He clothes himself in the skin of a white wolf, and, with bow and arrows in his hands, boldly faces a herd, crawHng toward them on his hands and knees ; the affrighted bisons press closely together to receive the supposed foe, who, on arriving at a convenient proximity, suddenly springs to his feet, and utters an unearthly yell. They fall into a frenzy of terror, which enables him to select several victims, -il d. Paradoxes. — Many persons are accustomed to apply "para- dox " as if it were a term of reproach, an implied absurdity or falsity. But, as Whately has shown, all that is properly imphed by the term is that the burden of proof lies with him who main- tains the paradox, since men are not to be expected to abandon the prevailing belief until somereason is shown. And Dr. Thomas Brown expressly cautions those engaged in philosophical inves- tigations not to be easily terrified by the appearance of a para- dox, inasmuch as it may traly be regarded as a necessary con- sequence that every accurate and original analysis must afford a result which will appear paradoxical. If we say sorrow is joy, death is life, weakness is might, loss is profit, we utter paradoxes which may appear startling. But in preparing our minds to be unprejudiced before we enter into a consideration of their truth, we may as well observe that Nature herself is full of paradoxes. The water which drowns us as a fluent stream can be walked upon as ice. The bullet which, when fired from a musket, carries death, will be harmless if ground to dust before being fired. The crystallized part of the oil of roses, so grateful in its fragrance — a solid at ordinary temperatures, though readily 258 DICTIONARY OF volatile — is a compound substance containing exactly the same elements, and in exactly the same proportions, as the gas with which we light our streets. The tea which we daily drink with benefit and pleasure produces palpitations, nervous tremblings, and even paralysis if taken in excess ; yet the peculiar organic agent called theine, to which tea owes its qualities, may be taken byjtself (as theine, not as tea) without any appreciable effect. (Th^ water which will allay our burning thirst augments^ it when congealed into snow ; so that Captain Ross declares that the natives of the Arctic regions prefer enduring the utmost extremity of thirst rather than attempt to remove it by eating snow. Yet if the snow be melted, it becomes drinkable water ; and it is melted in the mouth ! Nevertheless, although if melted before entering in the mouth it assuages thirst like other water, when melted in the mouth it has the opposite effect.!; To render this paradox more striking, we have only to remem- ber that ice, which melts more slowly in the mouth, is very effi- cient in allaying thirst. l. p. Parallax Movement, The. — Parallax movement is that ap- parent shifting of bodies which arises from changing our own position. We cannot stir a step without producing examples of it. If we pace up and down the street opposite to any object on the other side, as a door or a lamp-post, the angular direc- tion or parallax of the object changes at e\-ery moment. If we sail down a river, and fix our eyes on some church spire at a distance from its bank, we find that the direction in which we see it is always altering. At first the spire appears in advance of us, then to our side, and lasdy it lies behind. If, instead of limiting our attention to one object, we look at several that can be easily obser\'ed together, we find that as we move they move, or rather seem to move, and the angles formed by their lines of direction are changed relatively to each other and to us. In these instances of this parallax shifting it must have been re- marked that the effect of a change of our position in altering the direction of objects is greater when they are near than SCIENTIFIC ILLUSTRATIONS. 259 when they are distant. A few paces will sensibly alter the angular position or direction of the door or lamp-post, or the opposite side of the street. But ' if we look at a church some miles off, or at ships anchorea in the offing, we find that we re- quire to move much more than a few paces — in other words, the length of the bases needs to be considerably increased — before we can make any sensible change in the angle or direc- tion in which we see them. If when surveyed from a short base-line objects appear to have changed much, we may infer that they are near ; but if the base requires to be long in order to produce an effect, we may equally infer that they are distant.^ BE. Parasites, Social. — The family of parasites is large, and in- cludes representatives both small and great. Some of the least powerful of animals live as parasites in or upon -the bodies of others, and hardly any are entirely exempt. Such as are too weak to seize and slaughter their peculiar prey seek it in a dead state ; and hardly has an animal perished before the car- rion-feeders begin their attacks. According to Audubon, the turkey-buzzard gloats harmlessly over recumbent and sleeping animals in a healthy state, but watches patiently by such as are wounded, perishing in a morass, are ill and dying, until life is extinctiLand will not leave them. p. Parasites, The Uncertain Pleasures of Parasites who expect any consideration at the hands of their patron are fre- quently deluded. The patron treats them in the spirit in which the fox treats fleas. When the fox is troubled with fleas, he will go into the water, at first to a small depth, the water rising veiy little above the bottom of his belly ; the flieas, to avoid the water, will creep up toward the top of his back. Gradually he will go deeper and deeper, till the fleas actually gather upon his back, when he will sink his hinder parts, gently and by degrees, below the surface of the water, till the fleas are driven forward, and he will at length. merge every part of his body, in the same quiet way, beneath the water, except his nose, on which the 26o DICTIONARY OF fleas will congregate as on an island. At last he will suddenly sink his nose also and withdraw, leaving the parasites to be drowned. R. Parasites' Offerings, Tiie. — Parasitic plants send their roots into the substance of another plant, and derive their food from its juices ; but though, like some of the human kind, they live upon their neighbor's bounty, it must be admitted that they sometimes reward their benefactor by adorning it with their beautiful flowers. The Rafflesia Arnoldi, for example, whose flower is three feet across, and whose ciip will contain several ^ pints of fluid, grows attached to the stem of a climbing -eisttts in Sumatra. (The mistletoe also, whose silvery berries adorn the oak. Whether these offerings of the parasite bear any rea- sonable proportion to the amoUnt of damage done by it must be a question- open to doubt, i' Certaiii^ it is that the offerings of the social parasite to his benefactor, consisting as they do of subservience, flattery, and petty traits, are no real benefit to anybody ; while, on the other hand, the injury which the para- site does to honesty and manliness is most unmistakable.). On the whole, we are inclined to think that all the productions of parasites, whether vegetable or human, are not suflicient to make us value the producers very highly. v. Parliamentary Tactics. — It is stated that the shocks pro- duced by fishes possessed of electrical organs are sometimes suffi- ciently intense to kill the animal at once. Hence it is a com- mon practice with the conductors of convoys in South America, to collect a number of wild horses and drive them across the rivers in order to exhaust tlie ,,^fnTot?^ of their electricity be- fore the convoy passes.trParliamentary leaders in St. Stephen's ' understand the wisdom of^adopting an analogous policy. They are aware that the slippery eels of the Government Opposition possess considerable power during their early sessional attacks. They therefore so arrange their measures as to induce the Op- positionites to discharge their most fatal shafts upon those whose ruin will not be of much consequence. Then, when the Opposition electricity is exhausted, and toward the end of the SCIENTIFIC ILLUSTRATIONS. 261 session, the parliamentary leaders carry forward without any dangerous resistance all that they deem of most importanccyt 8. Paroxysmal Methods. — Nature has her paroxysms. Sir Roderick Murchison affirms that by no possible extension of gradual and insensible causes could huge masses of tertiary rocks have been so thrown over as to pass under the older rocks of the Alps, out of which they were formed. That opera- tion, he says, must have been paroxysmal, and no slow process could have accomplished it. The crust and outline of the earth are, in short, full of evidences that many of the ruptures and overthrows of the strata, as well as great denudations, could not even in millions of years have been produced by agencies like those of our times. si. Partizan Colors. — The political color ife determined by the political light in which the elector has been reared. The man who has had to grub in ignorance must wear a hue very differ- ent from that of his opponent who has lived in the bright light of educated thought. The narrow cells of ecclesiastical bigotry prevent their occupant from acquiring the ruddy color of the unimprisoned truth-seeker. But it is not only among voters at election times that we observe the effect of light in settling the question of color among active workers. We know that certain animals whose natural hue is white, if bred and brought up in darkness, become completely altered in texture and color. The cockroach in its norinal state is intensely black. If this insect be taken at an early stage of its existence, and carefully reared in darkness, instead of assuming an inky hue when it arrives at full growth, it becomes nearly white. The larvae of most insects that burrow in the cavities of the earth, of plants, or of animals, are white from the same cause. When confined under glasses that admit the light, they exchange their white- ness for a brownish hue. The influence of solar light and of moral light explains many mysteries among men and maggots. I. L. Party Idiosyncrasies, The Neutralization of. — In the 262 DICTIONARY OF early life of political parties their colors and peculiarities are most conspicuous. In the early life of rehgious sects their par- ticular and denoting specialties are sharp and clear. As time advances the colors begin to blend with other colors ; the pecu- liarities shrivel as the principles expand ; the specialties are soft- ened down into less harsh outlines. The vital power in both cases becomes stronger and stronger with time, though its acci- dents, badges, and accompaniments are less and less observable. We see this same fading away of individual distinction in the presence of healthy growth if we look at Nature. It is worth notice that several varieties of the hawthorn, as well as of the lime and juniper, are very distinct in their foliage and habit when young, but in the course of thirty or forty years become extremely like each other, thus reminding us of the well-known fact that the deodar, the cedar of Lebanon, and that of the Atlas are distinguished with the greatest ease while young, but with difficulty when old. va. Party Secession. — By a rather curious structure of the mus- cles and bones of the spine, the blindworm is able to stiffen itself to such a degree that on a slight pressure or trifling blow, or even by the voluntary contraction of the body, the tail is snapped away from the body, and on account of its propor- tionate length looks just as if the creature had been broken in half. The object of this curious property seems to be to insure the safety of the animal. The severed tail retains, or rather acquires, an extraordinary amount of irritability, and for sev- eral minutes after its amputation leaps and twists about with such violence that the attention of the foe is drawn to its singu- lar vagaries, and the blindworm itself creeps quietly away to some place of shelter.-^ Even after the movements have ceased, they may again be excited by touching the tail with a stick, or even with the finger, when it will jump about with a vigor ap- parently undiminished. On frequently repeating the process, however, the movements become perceptibly less active, and after a while the only sign of movement will be a slight convulsive shiver. It sometimes happens in the life of a political party SCIENTIFIC ILLUSTRATIONS. 263 that there comes to it a moment of great danger. The enemy presses hard upon the organization. " The tail of the party " seems to , be selected for special attack, because it is supposed to have given special provocation. Thereupon the " central body " manages to dissociate itself from " the tail. " " The tail " naturally shows signs of the greatest irritability. The public are pleased that the " central body " has become discredited, and since " the tail of the party '' continues to exhibit signs of great vivacity, they assume that the vital force of the association has been seriously affected. In due time they find that " the de- tached tail " has never had an independent life, but has per- formed merely mechanical movements under the influence of unnatural irritability. They further have to observe that even these soon cease because the section is dead, and that the po- litical party itself lives on as well and vigorously as ever. i. l. Passion, The Absurdity of. — There is a passion which is the result of adequate causes, and there is a blind, brutelike passion. We see men under the influence of the latter, furious without a cause, and with great waste of power scattering in- juries around upon perfectly inoffensive objects. These men are like the black rhinoceroses which C. J. Andersson says are subject to sudden paroxysms of unprovoked fury, rushing and charging with inconceivable fierceness animals, stones, and bushes — in short, every object that comes in their way. v^Gor- ^ don Gumming describes them as often plowing up the ground for several yards with their horns, and assaulting large bushes in the most violent manner. On these bushes they work for hours with their horns, at the same time snorting and blowing loudly, nor do they leave them in general until they have broken them to piecesJi> Passionate men are invited to look at these animals and set them up as their models or their monitors, whichever they, in their judgment, may deem more wise. M. Passion, Tlie Batteries of .^ — Regular ill temper is altogether a different thing from passion. The one corrodes incessantly like an acid or metal ; the other discharges desperate shocks, &^ 264 DICTIONARY OF like the electric shocks of the gymnotus, and spends itself. Do not get in the way of passionate men till their batteries are dis- charged. The exhaustion of these batteries is only a matter of time and opportunity. And you may watch the process calmly, and be instructed by Humboldt's description of the way in which the gymnotes use their batteries, and see if you discover therein any resemblance to and lesson for passionate persons. He tells us that the gymnotes abound in the vicinity of Calabozo in South America, and the Indians, well aware of the danger of encountering them when their powers are in vigor, collect from twenty to thirty horses, drive them into the pools, and when the gymnotes have exhausted their electric batteries on the poor horses, they can be taken without i^sk. Time and repose are needed before the batteries' are ready to act again. The first assault of the gymnotes, says Humboldt, was chiefly to be dreaded. In fact after a time the eels resembled dis- charged batteries. Their muscular motion continued active, but they had lost the power of giving energetic shocks. When the combat had endured for a quarter of an hour, the horses seemed to be less in fear. They were no longer seen to fall backward, and the gymnotes, swimming with their bodies half out of the water, were now flying from the horses and making for the shore. The Indians then began to use their harpoons, and by means of long cords attached to them drew the fish out of the water. When the batteries of his passion have been dis- charged, many a passionate man has also afforded a similarly easy conquest to those who have just watched and waited. MU. Passionate Character, The The panther rarely attacks man without being provoked ; but it is irritated at the merest trifle, and its anger is manifested by the lightning rapidity of its onset, which invariably results in the speedy death of the imprudent being who has aroused his, fury. Avoid passionate people, for they are like the panther. ] They may appear harm- less, but they are easily provoked, and when rage has taken possession of them they are reckless of your destruction. SCIENTIFIC ILLUSTRATIONS. 265 Patriotism, Genuine. — We may see genuine patriotism in the beehive. While some bees go off to the fields to perform the labor allotted to them there, let us see what the others are doing in the hive. Some are clustering about the top ; and now they fix themselves to the roof by the fore legs, while the hin- der legs hang down. Upon these other bees suspend them- selves, and leave their legs similarly to the disposal of the new- comer, and thus a ladder is rapidly formed, reaching at last to the bottom of the hive.ij: To facilitate operations, and perhaps strengthen as well as elaborate their scaffolding, they also hang themselves in festoons, each end attached to the roof ; and be- fore the actual commencement of labors, there is a series of such festoons formed, so that the bee workmen may ascend and descend in every direction. The entire weight of this Kv- ing staircase is borne by the individual bees at the top, and cheerfully borne too. Sydserff (reprinted in Cotton) says they will suffer their legs to be disjointed before they will let go their hold. Such is the patriotism of the hive ; and such is the sort of patriotism which merits emulation. It is a better sort than that which consists in fighting others. It is more useful. These patriots, if hurt, get their injuries in an endeavor to be of ser- vice to their community, and in a work which they know to be necessary. This is more nobly patriotic than getting wounds in endeavors to injure your fellows in a war. b. w. People who are Pampered. — Probably in no class of society do you find such crass stupidity, dense ignorance, and ludicrous imbecility as among people who pamper themselves — gluttons who feed their whims, ailments, and appetites until their mawkishness, obesity, and selfishness are revolting to the eye of common sense, and their senile prattle is offensive to all but idiot ears. It is almost too complimentary to compare these self-indulgent people to the goose ; but the resemblance between a natural man, and man after years of pampering, and the goose before and after domestication, is very startling. The wild goose is a pattern of sagacity : it must be content with the grasses, snails, fish, grains, berries, etc., which it finds in the 266 DICTIONARY OF open fields — in short, with whatsoever niggard winter has left behind, and to travel from stream to stream in quick flight, through darkness and frost. The domestic goose, on the con- trary, hving solely on potatoes and nourishing corn food, and transformed into a quiet household and pasturage animal, and having no work to do, has become the archetype of stupidity. With these animals all depends on their activity ; in slothful gluttony they lose their natural demeanor and energy ; the flash- ing ardor of liberty and nature is extinguished in imbecility. The goose has become a slave to its appetite, but all that is tragical in such a situation is here turned into comedy. The goose is a cavalry soldier on foot, a swimmer upon land. Not for one single moment does that heavy bod)r, snatched from its native element, find its original equilibrium ; all center of gravity is lost. On broad oarlike feet she trails along her clumsy body, grown fat in captivity, at every step rocking on one side or half tumbling forward ; the neck alone is stretched' out stiffly, and the eyes stare stupidly right before them. If you drive her, she never knows whither to go ; now turning hesitat- ingly to the right, and now to the left, always at a loss, always cackling. If you drive her more quickly, the noise becomes a confused shrill scream ; the bewildered animal spreads out its wings, beats them violently together, without, however, rising an inch above the ground, for long disuse has weakened the strength of its pinions. ST. People, Making Use of. — There are expert persons who are always making use of us. They constantly delude us into the notion that we are doing something which will benefit ourselves ; and at the moment we imagine we are to enjoy some of the best results of our work, they obtain and appropri- ate them. They never cease to offer us some benefit for the large proportion of our time which they consume, and a long habit of obedience to their superior authority constrains us to continue at the work, though we well knovv the inducement is a selfish sham, and our labor is the tax an extortioner is exact- ing. In the hands of these plausible fellows, we resemble a cer- SCIENTIFIC ILLUSTRATIONS. 267 tain bird which isKiised in an interesting mode of fishing much practised in China.