-?v: L .-. ..■■- .-»- A. '«-■'■'-''■ -^ ^-^ J) CORNELL UNIVERSITY LIBRARY i^riMAn?3 4>/ ^ Date Due He^ux DEt~^ julu AUG 8 i9io AT '^ ^ iSW^^ 1970 M pi ■ j ' iQ7(rri ^ DEe-tf=^8c^ 6 Cornell University Library D 21.W45 1922a Outline oj hjstor Cornell University Library The original of tiiis book is in tine Cornell University Library. There are no known copyright restrictions in the United States on the use of the text. http://www.archive.org/details/cu31924028328866 THE OUTLINE OE HISTORY THE OUTLINE OF HISTORY Being a Plain History of Life and Mankind BY H. G. WELLS WBITTEN OMGINAIXT WITH THE ADVICE AND EDITOBIAL HELP OF MR. ERNEST BARKER, SIR H. H. JOHNSTON, SIR E. RAY LANKBSTER, AND PROrESSOR GILBERT MURRAY Am) IIXtrSTBATED BY J. P. HORRABIN The Entibe Work, Revised and REABEAB-dsD BY THE AtlTHOll PUBLISHED BY THE MACMILLAN COMPANY FOB THE EEVIEW O:^' EEVIEWS COMPANY New; York 1922 All Rights Reserved E.h, doptRIGliT, 1920 4ND 1921, Bt the MACMItLAN COMPANY. COPTMOHT, 1920 AND 1921, By H, G. wells. Set up and electrotyped. Published November, 1920, Third Edition revjsed' 'and' reatrapged- September, 1921. A-1 F. S. Hare, Mr. Homer B. Hul- bert, Mr. Walter Ingleby, Mr. J. H. Leviton, Mr. H. Comyn Maitland, Mr. Karsten" Meyer, Mr. William Piatt, Mr. F. Gordon Eoe, Mr. Alden Sampson, Mr. Neville H. Smith, Mr. M. Timur, Mr. W. H. Thompson, Mr. A. J. Vogan, Mr. W. A. Voss, Mr. G. F. Wates, and one or two correspondents with viii INTRODUCTION illegible . signatures, have made valuable suggestions since the publication of the second edition. Pamphlets against the Ovi- line by Mr, Gomme and Dr. Downey have also been useful in this later revision. But of course none of these helpers, are to be held responsible for the judgments, tone, arrangement or writing of this Outline. In the relative importance of the parts, in the moral and political implications of the story,; the final decision has necessarily fallen to the writer. The problem of illustrations was a very difficult one for him, for he, had had no previous experience in the production of an illustrated book. In Mr. J. F. Horrabin he has had the good fortune to find not only an illustrator but a collaborator. Mr. Horrabin has spared no pains to make this work informative and exact. His maps and drawings are a part of the text, the most vital and decorative part. Some of them represent the reading and inquiry of many laborious days. The index to this edition is the work of Mr. Strickland Gib- son of Oxford. Several correspondents have asked for a pro- nouncing index and accordingly this has been provided. The writer owes a word of thanks to that living index of printed books, Mr. J. F. Cox^ of the London Library., He would also like to acknowledge here the help he has received from Mrs. Wells. Without her labour in typing and re-typing the drafts of the various chapters as they have been revised and amended, in checking references, finding suitable quotations, hunting up illustrations, and keeping in order the whole mass of material for this bistoi-y, and without her constant help and watchful criticism, its completion would have been impossible. H. G. Wells.' § 2. Flying dragons § 3. The first birds §4. An age of hardship and death , §5. The first appearance of fur and feathers SCHEME OF CONTENTS Chaptbk I. The Eakth in Space and Time ''*°1 Chapter II. The Record of the Rocks § 1. The first living things .5 §2. How old is the world? 10 Chaptee III. Natitbai. Selection and the Changes or Species . 13 Chapteh IV. The Invasion of the Dkt Land by Life § 1. Life and water ........ .19 §2. The earliest animals 21 Chapter V. The Age or Reptiles § 1. The age of lowland life 25 29 30 32 34 Chapter VI. The Age of Mammals § 1. A new age of life . . . . . . . . .37 §2. Tradition comes into the world 38 § 3. An age of brain growth . ... . . .42 §4. The world grows hard again ..... .44 Chapter VII. The Ancestry of Man § 1. Man descended from a walking ape 46 §2. First traces of man-like creatures ,51 §3. The Heidelberg sub-man ,52 § 4. The Piltdown sub-man 53 Chapter VIII. The Neanderthal Men, an Extinct Race. (The Early PALiEOLiTHio Age) § 1. The world 50,000 years ago 55 §2. The daily life of the first men 59 Chapter IX. The Later Postglacial Palaeolithic Men, the First Trpe Men. (Later Paleolithic Age) § 1. The coming of men like ourselves .65 § 2. Hunters give place to herdsmen 7i §3. No sub-men in America 75 X SCHEME OF CONTENTS FAGS Chapteb X. Neolithic Man in Europe § 1. The age of cultivation begins 77 §2. Where did the Neolithic culture arise? .... 81 §3. Everyday Neolithic life 81 § 4. Primitive trade ' 87 § 5. The flooding of the Mediterranean valley . ... 88 Chaptee XI. Eaelt Thought § 1. Primitive philosophy 92 §2. The Old Man in religion 94 § 3. Fear and hope in religion 96 § 4. Stars and seasons 97 § 5. Story-telling and myth-making 99 § 6. 'Complex origins of religion 100 Chapteb XII. The Eaces of Mankind § 1. Ib mankind still differentiating? 106 §2. The main races of mankind 110 § 3. The Heliolithic culture of the Brunet peoples . . . Ill Chapteb XIII. The Languages of Mankind § 1. No one primitive language 117 §2. The Aryan languages 118 § 3. The Semitic languages 120 § 4. The Hamitic languages 121 §5. The Ural-Altaic languages 123 § 6. The Chinese languages 123 §7. Other language groups 124 § 8. A possible primitive language group .... 127 § 9. Some isolated languages 129 Chapteb XIV. The First Civilizations § 1. Early cities and early nomads 131 §2a. The Sumerians 135 § 2b. The empire of Sargon the First 137 § 2c. The empire of Hammurabi . 137 § 2d. The Assyrians and their empire . . . , . .138 §2e. The Chaldean empire 140 §3. The early history of Egypt 141 § 4. The early civilization of India 147 § 5. The early history of China 147 § 6. While the civilizations were growing 152 Chapter XV. Sea Peoples and Trading Peoples § 1. The earliest ships and sailors 155 § 2. The ^gean cities before history 158 SCHEME OF CONTENTS zi IPAOB § 3. The first voyages of exploration . ' 162 §4. Early- traders 164 §5. Early travellers 166 Chaptee XVI. Wbiting^ § 1. Picture wHting 168 §2. Syirdble writing 171 § S. AlpMb'et -WTitiilg .172 § 4. THe pkee of Wi-iting ijl human life 173 Chaptkb XVll. God's and Stabs, Pkiests and Kings § i. Thfe priest cottifeB into history 177 §2. Priests and thfe stars 181 § 3. Priests and the dawn Of Ifearning 184 § 4. King against priests 185 §5. How Bel-liarduk struggled against the kings . . .188 §6. The god-kings of Egypt 191 §7. Shi Hwang-ti destroys the books 195 Chaptee XVIII. Serfs, Slaves, Social Classes, and Free In- dividuals § 1. The common man in ancient times 196 § 2. The earliest slaves . 198 § 3. The first "independent" persons 201 §4. Social classes three thousand years ago .... 204 § 5. Classes hardening into castes 207 § 6. Caste in India 210 § 7. The system of the Mandarins 212 § 8. A s'ummUry of flVe thousand years 214 Cha*teb XIX, The Hebbew Scbiptubes and the Pbophets § 1. The place of the Isritfilitfes in history 217 §2. Saul, IJavid, and SolomOn 225 §3. The Jfew6 a people 6f mixfed origin 230 §4. liie importance of the Hebrew prophets . , . > 232 Chai'teb XX. The Aetan-speAkino Peoples in Prehistobic Times § 1. The spreading of the Aryan-speakers ..... 236 §2. Primitive Aryan life 240 § '3. Early Aryan daily life 245 Chapter XXI. The Gbeeks and the Pebsians § 1. The Hellenic peoples 252 § 2. Distinctive features of the Hellenic civilization . . . 255 §3. Monarchy, aristocracy, and democracy in Greece . . 258 § 4. The kingdom of Lydia 265 § 5. The rise of the Persians in the East 266 §6. The story of Croesus 270 xii SCHEME OF CONTENTS PAGE §7. DariuB invades Russia; . . . • ; ■• • ■ 274 §8. The battle of Marathon . . ....-• . . 280 § 9. Thermopylae and Salamis , , . • . ■ 282 §10. Platsea and Mycale - . ..... 288 CtAPTEE XXII. Greek Thought in Relation ToHuMAjf Sooibtt- §1. The Athens of Pericles . . . ,. ■ . . . . 291 §2. Socrates .: .- • . • ■• . . '■■ . 298 " ■ p3. Plato and the Academy , , . •'..,.. ., ...,■■.. , . .299 8 4. Aristotle and. the Lyceum . . . . ._ , . .301 §5. Philosophy becomes unworldly , , . ,. , '. • ,- 303 §6. The quality and lim.itations of Greek thought . . . 304 Chapteb XXIU. The Cabebe OF AxEstANDEB THE Great .. § 1. Philip of .Macedonia , . . . . ■ . .. . ■ . 310 §2. The murder of King Philip . •: ;■,.■■•. • • . • 3^5 §3. Alexander's first conquests . ... ■ - . . 319 §4. The wanderings of Alexander. . .• . . . 327 §5. Was Alexander indeed great? ..... . 331 §6." The successors of Alexander . . •.,.'■ • ' • 337 §7. Pergamum a refuge of culture. ...... ..... • . 338 § 8. Alexander as a portent of world unity . . , . . , 340 Chapter XXIV. Science and Religion at Alexandria . ' §1. The science of Alexandria . . .• '; . '. ■ ; ' ; 342 §2. Philosophy of Alexandria . '■. ■ '. ■ '■■■;■ . . . 349 §3. Alexandria as a factory of religions •;''.• i-'- : . . 349 Chapter XXV. The Rise and Spread or Buddhx.sm ' '' § 1. The story of Gautama .' 354 §2. Teaching and legend in conflict . . . ..'s . ■. ,359 §3. The gospel of Gautama Buddha ■ . ■.'■■.••';•"■. ;' 361 §4. Buddhism and Asoka . .■ '. ■;- .'■;■• .. ■■■ . . 365 §5. Two great Chinese teachers ' . ' . •■■-•- ,■ ■ . . 371 §6. The corruptions of Buddhism". ■ ;■ '. : , 376 §7. The present range of Buddhism ,. . .,.,.,. . . 378 Chapter XXVI. The Two Webtben Repltblics §1. The beginnings of the Latins . . . •• . . . 330 § 2. A new sort of state . . . ' . . • . . _ 338 § 3. The Carthaginian republic . of rich men .... 399 §4. The First Punie War . . . . . 400 §5. Cato the Elder and the spiri^ of. Catp,. .... , . . 404 §6. The Second Punic, War ,,, . . .., ' . 407 §7. The Third Punic War . . . -,.. . ..'."..'. '. 412 ■ ■ §8. How the Punic War. undermined Roman.,liber4;y. , . . .. 417 § 9, Comparison of the Roman republic Xfith a. modern state ., 418 SCHEME OF CONTENTS xui CHAPTEat §1- §2. §3. §4. §5- §6. §7. Ceaftes il- ia, ia. i4. §5. §6. Chapteb il- ia. §3. i4. §5. §6. i7. §8. §9. §10. Chapter il- ia. i3. i4. §5. §6. i7. §8. i9- Chapteb il- ia. crumples up XXVII. Feom TiBEBius Gkacchtts to the God-Empebob IN Rome The science of thwarting the common man Finance in the Boman state . The last years of republican politics . The era of the adventurer generals The end of the republic The coming of the Princeps . Why the Boman republic failed . XXVIII. The C^esaes between the Sea and the Great Plains of the Old World A short catalogue of emperors Roman civilization at its zenith . Limitations of the Roman mind . The stir of the great plains . The Western (true Roman) Empire The Eastern (revived Hellenic) Empire XXIX. The Beginnings, the Rise, and the Divisions OF Christianity Judea at the Christian era .... The teachings of Jesus of Nazareth . The universal religions .... The crucifixion of Jesus of Nazareth . Doctrines added to the teachings of Jesus . The struggles and persecutions of Christianity Constantino the Great The establishment of official Christianity . The map of Europe, a.d. 500 The salvation of learning by Christianity . XXX. Sb^ten Centuries in Asia (cieca 50 A.D. 650) Justinian the Great .... The Sassanid empire in Persia . The decay of Syria under the Sassanids The first message from Islam Zoroaster and Mani .... Hunnish peoples in central Asia and India The great age of China .... Intellectual fetters of China The travels of Yuan Chwang XXXI. Muhammad and Islam Arabia before Muhammad . Life of Muhammad to the Hegira . Muhammad becomes a fighting prophet 424 427 429 435 439 443 446 451 458 467 469 480 487 493 496 505 507 509 516 520 522 526 530 535 537 540 544 545 547 550 555 561 567 570 574 XIV SCHEME OF CONTENTS §4. §5. §6. §7. §8. Chapter §1- §2. §3. §4. §5. §6. §7. §8. §9. §10. §11. §12. §13. §14. The teachings of Islam .... The caliphs Abu Bekr and Omar The great days of the Omayyads . The decay of Islam under the Abbasids The intellectual life of Arab Islam XXXII. Christendom and the Cetjsades The Western world at its lowest ebb . The feudal system ..... The Prankish kingdom of the Merovingians The Christianization of the western barbarians Charlemagne becomes emperor of the West . The personality of Charlemagne . The French and the Germans become distinct The Nprmans, the Saracens, the Hungarians, and I'lirks How Qqnstantinople appealed to Rome The Crusades The Crusades a te^t of Christianity . The Emperor Frederick II . Defects and limitations of the papacy A list of leading popes .... the S. eljuk PAGB 579 582 588 596 599 605 607 610 613 619 623 626 028 637 640 648 650 654 660 Chapter XXXIII. The Great Empire of Jengis Khan and his §1- §2. §3. §4. §5. §5A. §5b. §.5o. §5D. §5e. §5F. Successors (The Age of the Land Ways) Asia at the end of the twelfth century The rise and victories of the Mongols . The travels of Marco Polo .... The Ottoman Turks and Constantinople Why the Mongols were not Christianized . Kublai Khan founds the Yuan dynasty The Mongols revert to tribalism . The Kipchak empire and the Tsar of Muscovy Timurlane The Mongol empire of India .... The Mongols and the Gipsies Chapter XXXIV. The Renascence op Western Civilization (Land Ways Give Place to Sea Ways) § 1. Christianity and popular education § 2. Europe begins to think for itself § 3. The Great Plague and the dawn of communism . § 4. How paper liberated the human mind §5. Protestantism of the princes and Protestantism of the peoples 666 609 675 681 687 688 688 688 690 693 697 699 707 712 717 719 § 6. The reawakening of science 725 SCHEME OF CONTENTS XT § 7. The new growth of European towns . § 8. America comes into history . §9. What Machiavelli thought of the world §10. The republic of Switzerland § llA. The life of the Emperor Charles V . § 11b. Protestants if the prince wills it . § lie. The intellectual under-tow . Chapteb §1- §2. §3. §4- §S. §6. §7. §8. §9. §10. §11. §12. Chapter Il- §3. §4. §5. §6. §7. §8. §9. §10. §11. §12. §13. XXXV. Princes, Parliaments, and Power? Princes and foreign policy . The Dutch republic .... The English republic .... The break-up and disorder of Germany The splendours of Grand Monarchy in Europe The growth of the idea of Great Powers The crowned republic of Poland and its f: The first scramble for empire overseas . Britain dominates India Russia's ride to the Pacific . What Gibbon thought of the world in 1780 The social truce draws to an end te PAOE 734 740 749 753 754 765 765 767 769 773 783 786 793 798 801 805 809 811 818 XXXVI. The New Democratic Kepubi,ics or America AND France Inconveniences of the Great Power system .... 826 The thirteen colonies before their revolt . . . . 828 Civil war is forced upon the colonies 833 The War of Independence 838 The constitution of the United States 840 Primitive features of the United States constitution . . 847 Eevolutionary ideas in France 853 The Revolution of the year 1789 856 The French "crowned republic" of '89-'91 . . . .859 The Revolution of the Jacobins 866 The Jacobin republic, 1792-94 876 The Directory 881 The pause in reconstruction and the dawn of modern Socialism 883 Chapter XXXVII. The Career or Napoleow Eonapabte § 1. The Bonaparte family in Corsica . §2. Bonaparte as a republican general §3. Napoleon First Consul, 1799-1804 §4. Napoleon I Emperor, 1804-14 §5. The Hundred Days .... § 6. The map of Europe in 1815 . 892 893 898 903 911 916 xvi SCHEME OF CONTENTS PAOK Chapter XXXVIII. The Kbalities and Imaginations of the Nineteenth Centuby §1. The mechanical revolution • .922 § 2. Relation of the mechanical to the industrial revolution . 931 §3. The fermentation of ideas, 1848 . . ' . • • .936 §4. The development of the idea of Socialism . . . .938 § 5. Shortcomings of Socialism as a scheme of human society . 946 §6. How Darwinism affected religious and political ideas . 951 §7. The idea of Nationalism 959 § 8. Europe between 1848 and 1878 963 §9. The (second) scramble for overseas empires . . .977 § 10. The Indian precedent in Asia 987 § 11. The history of Japan 991 § 12. Close of the period of overseas expansion . . . • . 996 §13. The British Empire in 1914 997 Chapter XXXIX. The Inteenationai, Catastrophe of 1914 § 1. The armed peace before the Great War .... 1000 §2. Imperial Germany 1002 §3. The spirit of Imperialism in Britain and Ireland . . 1011 § 4. Imperialism in France, Italy, and the Balkans . . . 1023 §5. Russia still a Grand Monarchy in 1914 .... 1025 § 6. The tTnited States and the Imperial idea .... 1027 §7. The immediate causes of the Great War .... 1031 § 8. A summary of the Great War up to 1917 .... 1036 §9. The Great War from the Russian collapse to the armistice 1Q46 § 10. The political, economic, and social disorganization caused by the Great War 1053 § 11. President Wilson and the problems of Versailles . . . 1061 § 12. Summary of the first Covenant of the League of Nations 1072 § 13. A general outline of the treaties of 1919 and 1920 . . 1076 § 14. A forecast of the next war 1081 Chapter XL. The Next Stage op History § 1. The possible unification of men's wills in political matters 1086 § 2. How a, Federal World Government may come about . . 1090 §3. Some fundamental characteristics of a modern world state 1092 § 4. What this world might be were it under one law and justice 1094 A Crbonolooicai, Table fboii 800 b.c. to 1920 .... .1102 Five Time Charts of the World's Affairs from 1000 B.C. to A.D. 1920 1122 lOTJKX . . . 1127 LIST OF MAPS AND ILLUSTRATIONS PAGE Life in the Early Palaeozoic 9 Time Cliart from earliest life to present age 11 Life in the Later Palseozoic Age 16 Australian Lung Fish . . .22 Some Keptiles of the Later Paleozoic Age 23 Some Mesozoic Reptiles . . . . . ■. . . .27 Later Mesozoic Reptiles . 30 Pterodactyls and Archaeopteryx . . ' 31 Hesperornis 35 Some Oligocene Mammals . . . . . • • • .39 Miocene Mammals . . . ...... .41 Time Diagram of the Glacial Ages • .47 Early Pleistocene Animals, contemporary with Earliest Man . . 48 The Sub-Man Pithecanthropus 49 Map of Europe and Western Asia 50,000 Years Ago .... 56 Neanderthal Man 58 Early Stone Implements . . . ... . . .60 Australia and the Western Pacific in the Glacial Age ... 62 Cro-magnon Man ^^ Europe and Western Asia in the Later Palaeolithic Age ... 68 Reindeer Age Articles ®^ A Reindeer Age Masterpiece . . . . ■• . • .72 Reindeer Age Engravings and Carvings 73 Neolithic Implements . . "^ Pottery from Lake Dwellings . . . • • • ' ' ^^ Hut Urns ' " os A'Meahir of the Neolithic Period . . . . . . . ' . 98 •Bronze Age Implements . . . .■.-.. . . 1 i Diagram showing the Duration of the' Neolithic Period . . .' 103 Heads of Australoid Types "^ Bushwoman Negro Types ' ' 113 Mongolian Types • * -nq Caucasian Types Map of Europe, Asia, Africa 15,000 Years Ago ..... 114 The Swastika ]]^ Belationship of Human Races (Diagrammatic Summary) . . .lib xvii XVIU LIST OF MAPS AND ILLUSTRATIONS FAQB Possible Belationship of Languages 122 Racial Types (after ChampoUion) 128 The Cradle of Western Civilization 133 Sumerian Warriors in Phalanx 136 Assyrian Warrior (temp. Sargon II) 139 Time Chart 6000 B.C. to A.D. 142 Egyptian Hippopotamus Goddess 143 The Cradle of Chinese Civilization (Map) 149 Boats on Nile, 2500 b.c ' 1S7 Egyptian Ship on Eed Sea, 1250 b.o. 158 -SIgean Civilization (Map) . . . 160 A Votary of the Snake Goddess 161 American Indian Picture-Writing 171 Egyptian Gods — Set, Anubis, Typhon, Bes 179 Egyptian Gods — ^Thoth-lunus, Hathor, Chnemu ..... 182 An Assyrian King and his Chief Minister 186 Pharaoh Chephren 190 Pharaoh Eameses III as Osiris (Sarcophagus relief) . . . 192 Pharaoh Akhnaton . . .194 Egyptian Peasants (Pyramid Age) .,■..... 199 Brawl among Egyptian Boatmen (Pyramid Age) . . . ; 201 Egyptian Social Types (from Tombs) 203 The Land of the Hebrews 219 Aryan-speaking Peoples 1000-500 B.C. (Map) 237 Combat between Menelaus and Hector 246 Archaic Horses and Chariots 247 Hellenic Races 1000-800 B.C. (Map) 253 Greek Sea Fight, 550 B.C. 254 Atheniaa Warship, 400 b.c 257 Scythian Types 269 Median and Second Babylonian Empires (in Nebuchadnezzar's Reign) 270 The Empire of Darius 276 Wars of the Greeks and Persians (Map) 280 Athenian Foot-soldier 282 Persian Body-guard (from Frieze at Susa) 286, The World according to Herodotus 287 Athene of the Parthenon 296 Philip of Macedon 311 Growth of Macedonia under Philip 313 Macedonian Warrior (Bas-relief from Pella) ..... 316 Campaigns of Alexander the Great ....... 323 Alexander the Great 333 Break-up of Alexander's Empire 335 Seleucus I 336 LIST OF MAPS AND ILLUSTRATIONS xk Later State of Alexander's Empire 339 The World according to Eratosthenes, 200 B.o 344 The Known World, 250 b.c , 346 lais and Horua 35I Serapis 352 The Rise of Buddhism . 358 Hariti 366 Chinese Image of Kuan-yin 369 The Spread of Buddhism 370 Indian Gods — Vishnu, Brahma, Siva 374 Indian Gods — ^Krishna, Kali, Ganesa 377 The Western Mediterranean, 800-600 u.c 381 Early Latium 382 Burning the Dead: Etruscan Ceremony 384 Statuette of a Gaul 385 Ronian Power after the Sanmitc Wars 386 Italy after 275 B.c • . ... 387 Koman Coin Celehrating the Victory over Pyrrhus .... 389 Mercury 391 Carthaginian Coins 400 Boman As ...'. 404 Rome and its Alliances, 150 B.c 414 Gladiators 421 ■ Roman Power, 50 B.O. 438 Julius Caesar ... 442 Roman Empire at Death of Augustus 448 Roman Empire in ■ Time of Trajan 453 Asia and Europe: Life of the Period (Map) 471 Central Asia, 200-100 b.c. 477 Tracks of Migrating and Raiding Peoples, a.d. 1.-700 . . . .483 Eastern Roman Empire 488 Constantinople (Map to show value of its position) .... 490 Galilee 495 Map of Europe, a.d. 500 529 The Eastern Empire and the Sassanids ...... 541 Asia Minor, Syria and Mesopotamia 543 Ephthalite Coin . . , 549 Chinese Empire, Tang Dynasty 552 Yuan Chwang's Route from China to India 562 Arabia and Adjacent Couptries 569 The Beginnings of Moslem Power 583 The Growth of Moslem Pov/er in 25 Years 587 The Moslem Empire, A.D. 750 590 Europe, a.d. 600 609 XX LIST OF MAPS AND ILLUSTRATION'S PAGE Frankish DominionB in the Time of Charles Martei ' . . . .611 England, a.d. 640 ' . . . • .615 England, a.d. 878 . . . 617 Europe at the Death of Charlemagne 620 France at the Close of 10th Century 629 Empire of Otto the Great 633 The Coming of the Seljuks (Map) 634 The First Crusade (Map) 641 Europe and Asia, 1200 668 Empire of Jengis Khan, 1227 . . ' 671 Travels of Marco Polo 676 Ottoman Empire, 1453 684 Ottoman Empire, 1566 686 Empire of Timurlane . . . . ' 692 Europe at the Fall of Constantinople 701 "We have the payne . . ." John Ball's Speech . , . . . .714 Ignatii^ of Loyola '^22 European Trade Icoutes in the 14th Century 738 The Chief Voyages' of Exploration up to 1522 . . . . 745 Mexico and Peru 748 Switzerland 753 Europe in the Time of Charles V 756 Martin Luther 757 Francis I 759 Henry VIII 760 Charles V 761 Central Europe, 1648 784 Louis XIV 787 Europe in 1714 790 The Partitions of Poland 800 Britain, France and Spain in America, 1750 804 Chief Foreign Settlements in India, 17th Century .... 807 India in 1750 810 American Colonies, 1760 830 Boston in 1775 837 U.S.A. in 1790 .841 The U.S.A., showing Dates of the Chief Territorial Extensions . . 845 Benjamin Franklin g4g George Washington 850 The Flight to Varennes (Map) 867 North Eastern Frontier of France, 1792 874 Napoleon's Egyptian Campaign 89j Napoleon as Emperor qq^ Tsar Alexander 1 _ _ gQg LIST OF MAPS AND ILLUSTRATIONS xxi Napoleon's Empire, 1810 908 Trail of Napoleon 912 Europe after the Congress of Vienna 918 Tlie Natural Political Map of Europe 921 Tribal gods of the 19th Century 961 Map of Europe, 1848-1871 966 Italy, 1861 967 Bismarck 970 The Balkans, 1878 974 Comparative Maps of Asia under different projections . . . 976 The British Empire in 1815 978 Africa in the Middle of 19th Century 985 Africa, 1914 986 Japan and the East Coast of Asia 995 Overseas Empires of European Powers, 1914 999 Emperor William II 1006 Ireland 1016 The Balkan States, 1913 . 1024 The Original German Plan, 1914 . . . . , . . .1035 The Western Front, 1915-18 1039 Time Chart of the Great War, 1914-18 1052-53 President Wilson 1066 M. Clemenceau 1067 Mr. Lloyd George 1068 Germany after the Peace Treaty, 1919 1075 The Turkish Treaty, 1920 1077 The Break-up of Austria-Hungary 1079 Time Chart 1000 B.C.-300 b.c 1122 400 B.C.-A.D. 300 1123 A.D. 200-A.D. 900 1124 " " A.D. 800-A.D. 1500 1125 « « A.D. 1220-A.D. 1920 1126 ,THE OUTLINE OF HISTORY THE OUTLINE OF HISTORY THE EAKTH m SPACE AND TIME THE earth on which we live is a spinning globe. Vast though it seems to us, it is a mere speck of matter in the greater vastness of space. Space is, for the most part, emptiness. At great intervals there are in this emptiness flaring centres of heat and . light, the "fixed stars." They are all moving about in space, not- withstanding that they are called fixed stars, but for a long time men did not realize their motion. They are so vast and at such tremendous distances that their motion is not per- ceived. Only in the course of many thousands of years is it appreciable. These fixed stars are so far off that, for all their immensity, they seem to be, even when we look at them through the most powerful telescopes, mere points of light, brighter or less bright. A few, however, when we turn a telescope upon them, are seen to be whirls and clouds of shining vapour which we call nebulse. They are so far off that a movement of millions of miles would be imperceptible. One star, however, is so near to us that it is like a great ball of flame. This one is the sun. The sun is itself in its nature like a fixed, star, but it differs from the other fixed stars in appearance because it is beyond comparison nearer than they are ; and because it is nearer men have been able to learn some- thing of its nature. Its mean distance from the earth is ninety-three million miles. It is a mass of flaming matter, hav- ing a diameter of 866,000 miles. Its bulk is a million and a quarter times the bulk of our earth. These are difficult figures for the imagination. If a bullet fired from a Maxim gun at the sun kept its muzzle velocity unimpaired, it would take seven years to reach the sun. And 1 2 THE OUTLINE OF HISTORY yet we say the sun is near, measured by the scale of the stars. If the earth were a small ball, one inch in diameter, the sun would be a globe of nine feet diameter; it would fill a small bedroom. It is spinning round on its axis, but since it is an in- candescent fluid, its polar regions do not travel with the same velocity as its equator, the surface of which rotates in about twenty-five days. The surface visible to us consists of clouds of incandescent metallic vapour. At what lies below we can only guess. So hot is the sun's atmosphere that iron, nickel, copper, and tin are present in it in a gaseous state. About it at great distances circle not only our earth, but certain kindred bodies called the planets. These shine in the sky because they reflect the light of the sun ; they are near enough for us to note their movements quite easily. ITight by night their positions change with regard to the fixed stars. It is well to understand how empty is space. If, as we have said, the sun were a ball nine feet across, our earth would, in proportion, be the size of a one-inch ball, and at a distance of 323 yards from the sun. The moon would be a speck the size of a small pea, thirty inches from the earth. Nearer to the sun than the earth would be two other very similar specks, the planets Mercury and Venus, at a distance of 125 and 250 yards respectively. Beyond the earth would come the planets Mars, Jupiter, Saturn, Uranus, and Neptune, at distances of 500, 1,680, 3,000, 6,000, and 9,500 yards respectively. There would also be a certain number of very much smaller specks, flying about amongst these planets, more particularly a num- ber called the asteroids circling between Mars and Jupiter, and occasionally a little puff of more or less luminous vapour and dust would drift into the system from the almost limit- less emptiness beyond. Such a puff is what we call a comet. All the rest of the space about us and around us and for un- fathomable distances beyond is cold, lifeless, and void. The nearest fixed star to us, on this minute scale, be it remem- bered — ^the earth as a one-inch ball, and the moon a little pea — would be over 40,000 miles away. Most of the fixed stars we see would still be scores and hundreds of millions of miles away. The science that tells of these things and how men have come to know about them is Astronomy, and to books of astronomy the reader must go to learn more about the sun and TRE EARTH l^ SP^CE AND TIJVIE 3 stars. The science and degcription Off th.e world on which we live are called respectively Geology and Geography. The diameter of our world is a little under 8,000 miles. Its surface is rough, the more projecting parts of the roughness are mountains, and in the hollows of its surface there is a film of water, the oceans and seas. This film of water is about five miles thick at its deepest part — that is to say, the deepest oceans have a depth of five miles. This is very little in com- parison with the bulk of the world. About this sphere is a thin covering of air, the atmosphere. As we ascend in a balloon or go up a mountain from the level of the sea-shore the air is continually less dense, until at last it becomes so thin that it cannot support life. At a height of twenty miles there is scarcely any air at all — not one hun- dredth part of the density of air at the* surface of the sea. The highest point to which a bird can fly is about four miles up — ■ the condor, it is said, can struggle up to that ; but most small birds and insects which are carried up by aeroplanes or bal- loon^ drop off insensible at a much lower level, and the greatest height to which any mountaineer has ever climbed is under five miles. Men have flown in aeroplanes to a height of over four miles, and balloons with men in them have reached very nearly seven miles, but at the cost of considerable physical suffering. Small experimental balloons, containing not men, but recording instruments, have gone as high as twenty-two miles. It is in the upper few hundred feet of the crust of the earth, in the sea, and in the lower levels of the air below four miles that life is found. We do not know of any life at all except in these films of air and water upon our planet. So far as we kno^y, all the rest of space is as yet without life. Scientific men have discussed the possibility of life, or of some process of a similar kind, occurring upon such kindred bodies as the planets Venus and Mars. But they point merely to question- able possibilities. Astronomers and geologists and those who study physics have been able to tell us something of the origin and history of the earth. They consider that, vast ages ago, the sun was a spinning, flaring mass of matter, not yet concentrated into a compast centre of heat and light, considerably larger than it is now, and spinning very much faster, and that as it whirled, 4 . THE OUTLINE OF HIST^OBY a series of fragments -detaehed themselves from it, which. lie- came the planets. Our earth is one of these planets. , The flaring mass that was the material of the earth broke into two masses as it spun; a larger, the earth itself, and a smaller, which is now the dead, still moon. Astronomers give us- con- vincing reasons for supposing that sun and earth and moon and all that system were then whirling about at a speed much greater than the speed at which they are moving to-day, and that' at first our earth was a flaming thing upon which no life could live. The way in which they have reached these conclusions is by a very beautiful and interesting series of observations and reasoning, too long and elaborate for us to deal with here. But they oblige us to believe that the sim, incandescent though it is, is now much cooler than it was, and that it spins more slowly now than it did, and that it continues to. cool and slow down. And they also show that the rate at which the earth spins is diminishing and con- tinues to diminish — ^that is to say, that our day is growing longer and longer j and that the heat at the centre of the earth wastes slowly. There was a time when the day was not a half and not a third of what it is to-day; when a blazing hot sun, much greater than it is now, must have moved visibly — ^had there been an eye to mark it— from its rise to its setting across the skies. There will be a time when the day will be as long as a year is now, and the cooling sun, shorn of its beams, will hang motionless in the heavens. It must have been in dstys of a much hotter sun, a far swifter- day and night, high tides, great heat,, tremendous storms and earthquakes, that life, of which we are a part, begaii upon the world. The moon also was nearer and brighter in those days and had a changing face. n THE RECORD OF THE ROCKS ^'1. The First Living Things. § 2. How OU Is -the World? § 1 WE do not know how life began upon the earth.^ Biologists,,, that is to say, students of life, have made guesses about these beginnings, but we will not discuss theni here. Let us only note that they all agree that life began where the tides of those swift days spread and receded over the steaming beaches of mud and sand. > The atmosphere was much denser then, usually great cloM masses obscured the sun, frequent storms darkened the heavens. The land of those days, upheaved by violent volcanic forces, -was. a barren land, without vegetation, without soil. The almost .incees,ant rain7Storrns. swept, down upon it, and rivers .and. torrents ■ .ca.rri.ed. ..great loads ,of seclimesnt out 'to sea,' to become muds that hardened later into slates and' shales/ and sandsu. that, became sandstones.. The geologists have' studied the whole accum.u.lfttign of these .pediments, as it remains to- day, ..from those ..of the earliest ages to the most recent. Of course the oldegj, deposits are the most distorted and changed and worn, an,d in them there, is now no certain trace to be found: of life at all. Probably the earliest forms of life were small and soft, leaving no evid.enee of their existence' behind 'Here iii this history of life we are doing our best to give only known and established facts in the broadest way, and to reduce to' a minimum the speculative element that must necessarily enter into our account. The reader who 1b curious upon this question of life's beginning will find a very good.-summary .of ,current suggestions done by Professor L. L. Woodruff in. President Lull's exce.llent compilation The Evolution of the Earths (YaXe University Ptess);' Professor H. F. Osborn's Origin and Evolution of. Life is-also avery .dgorous-and suggestive book upon -this subject, but it de- mands .a fair knowl^dge of physics and chemistry. Two very stimulating essays for the ktudent"a.T'e A. H. Church's SotcmtdoJ MemoirB. NoolSS, -els'.' -tlliiv;- Press.' ' -•" ' ---'•.-• . ....,■,.. . . , (B THE OUTLINE OF HISTORY them. It was only when some of these living things developied skeletons and shells of lime and suoh-like hard material that they left fossil vestiges after they died, and so put themselves on record for examination. The literature of geology is very largely an account of the fossils that are fofiifd ifl thy r'ocks, aifd of tHe order in which Uyfeir'^ kfter layers of rtoclii lid bnti on tooifier. Th^ very olde'at i^dckg must have Ijeell formed before there was ariy sea at sllf .when the earth was iao hot for a sea id exist, ktii when the Wate thai iS fiow sea was kn atliiospliere of sfeam mixed with the air. tt'S highet levels were dense with clouds, from which a hot rain fell towards the roeks below, to be eonve!rted again into Steam long before it reached their incandescence. Be- low this steam atmosphere the molten world-stuff solidified ias the first rocks. These first rocks must have solidified as a cake over glowing liquid material beneath, much as cooling lava does. They must have appeared first aa crusts and clinkers. They must have been constantly remelted and re- crystallized before any thickness of them became permanently solid. The name of Fundamental Gneiss is given to a great underlying system of crystalline rocks which probably formed age by age as this hot youth of the world drew to its close. THe scenery of the world in the days when the Fundamental Gneiss was formed must Have been more like the interior of a fiiriiace thttn anything else to be fburid ttpdn earth at the pres- ent time. After long ages the steam in the atmrtsi^here beg;an also to condense ahd fkll right down tb ^arthj poufiiig at la^^ over theS"^ warm liriitiordial tdckS iji riiriilets df hot watgl* arid gdtHei-irig iri depressions as peels arid lake^ ahd the flr^t sfes. Into those seas the streams that poured over the rocks' brbc'ght with them dust and particles to form a sediment, and this sedi- ment accumulated in layers. Or as geologists call them, strata, and formed the first Sedimentary Rocks. Those earliest s'edi^ mentary rocks sank into depressions and were covered by others; they were bent, tilted upj and torn by great volcanic disturbances and by tidal strains that swept through the rocky crust of the earth. We find these first sedimentary rocks still coming to the surface of the land here arid there, either not covered by later strata or exposed after vast ages of conc^al- ment by the weairing off of the rock that covered them iaier — THE RECORD OF THE ROCKS 7 there are great surfaces of them in Canada especially; they are cleft and bent, partially remelted, recryatallized, hardened and compressed, but rect^izable for what they are. And they contain no single certain trace of life at all. They are frequently called Azoic (lifeless) Eocks. But since in some of these earliest sedimentary rocks a substance called graphite (black lead) occurs, and also red and black oxide of iron, and since it is asserted that these substances need the activity of living things for their production, which may or may not be the case, some geologists prefer to call these earliest sedi- mentary rocks ArchoBozoic (primordial life). They suppose that the first life was soft living matter that had no shells or skeletons or any such structure that could remain as a recog- nizable fossil after its death, and that its chemical influence caused the deposition of graphite and iron oxide. This is pure guessing, of course, and there is at least an equal probability that in the time of formation of the Azoic Eocks, life had not yet begun. Overlying or overlapping these Azoic or Archseozoic rocks come others, manifestly also very ancient and worn, which do contain traces of life. These first remains are of the simplest description ; they are the vestiges of simple plants called algae, or marks like the tracks made by worms in the sea mud. There are also the skeletons of the microscopic creatures called Eadio- laria. This second series of rocks is called the Proterozoic (be- ginning of life) series, and marks a long age in the world's history. Lying over and above the Proterozoic rocks is a third series, which is found to contain a considerable number and variety of traces of living things. First comes the evidence of a diversity of shellfish, crabs, and such-like crawling things, worms, seaweeds, and the like ; then of a multitude of fishes and of the beginnings of land plants and land creatures. These rocks are called the Palaeozoic (ancient life) rocks. They mark a vast era, during which life was slowly spreading, increasing, and developing in the sea^ of our world. Through long ages, through the earliest Palaeozoic time, it was no more than a proliferation of such swimming and creeping things in the water. There were creatures called trilobites ; they were crawling things like big sea woodlice that were probably re- lated to the American king-crab of to-day. There were also sea scorpions, the prefects of that ear}y world. The individuals 8 THE OUTLINE OF HISTORY of feertain species of these were nine feet long. These were the very highest sorts of life. There, were abundant different sorts of an order of shellfish called brachiopods, . There were plant animals, rooted and joined together like plants, and loose weeds that waved in the waters. It was not a display of life to excite our imaginations. There was nothing that ran or flew or even swam swiftly or skiKuUy, Except for the size of some of the creatures, it was. not very different from, and rather less various than, the kind of lifi a student would gather from any summer-time ditch nowadays for microscopic examination. Such was the life of the shallow sieas through a hundred million years or more in the early Palaeozoic period. The land during that time was apparently absolutely barren. We find no trace nor hint of land lifa Everything that lived in those days lived under water for most, or all of its life. Between the formation of these Lower Palaeozoic rocks in which the sea scorpion and trilobite ruled, and our own time, there have intervened almost immeasurable ages, represented by layers and masses of sedimentary rocks. There axe first the Upper Palaeozoic rocks, and above these the geologists dis- tinguish two great divisions. Next above the Palaeozoic come the Mesozoic (middle life) rocks, a second vast system of fossil- bearing rocks, representing perhaps a hundred millions of swift years, and containing a wonderful array of fossil re- mains, bones of giant reptiles and the like, which we will pres- ently describe ; and above these again are the Cainozoic (recent life) rocks, a third great volume in the history of life, an un- finished volume of which the sand and mud that was carried out to sea yesterday by the rivers of the world, to bury the bones and scales and bodies and tracks that will become at last fossils of the things of to-day, constitute the last written leaf. These markings and fossils in the rocks and the rocks them- selves are our first historical documents. The history of life that men have puzzled out and are still puzzling out from them is called the Eecord of the Rocks, By studying this record men are slowly piecing together a story of life's beginnings, and of the beginnings of our kind, of which our ancestors a century or so ago had no suspicion. But when we call these rocks and the fossils a record and a history, it must not be supiposed that there is any sign of an orderly keeping of a THE RECORD OF THE ROCKS 10 THE OUTLINE OF HISTORY record. It is merely that whatever happens leaves some trace, if only we are intelligent enough to detect the meaning of that trace. 'Not are the rocks of the world in orderly layers one above the other, convenient for men to read. They are not like the books and pages of a library. They are torn, dis- rupted, interrupted, flung about, defaced, like a carelessly ar- ranged office after it has experienced in succession a bombard- ment, a hostile military occupation, looting, an earthquake, riots, and a fire. And so it is that for countless generations this Record of the Eocks lay unsuspected beneath the feet of men. Fossils were known to the Ionian Greeks in the sixth century b.c, they were discussed at Alexandria by Eratos- thenes and others in the third century B.C., a discussion which is summarised in Strabo's Geography ( ?20-10 B.C.). They were known to the Latin poet Ovid, but he did not understand their nature. He thought they were the first rude efforts of creative power. They were noted by Arabic writers in the tenth century. Leonardo da Vinci, who lived so recently as the opening of the sixteenth century (1452-1519), was one of the first Europeans to grasp the real significance of fossils, and it has been only within the last century and a half that man has begun the serious and sustained deciphering of these long-neglected early pages of his world's history. § 2. Speculations about geological time vary enormously. Esti- mates of the age of the oldest rocks by geologists and astronomers starting from different standpoints have varied between 1,600,000,000, and 25,000,000. That the period of time has been vast, that it is to be counted by scores and pos- sibly by hundreds of millions of years, is the utmost that can be said with certainty in the matter. It is quite open to the reader to divide every number in the appended time diagram by ten or multiply it by two; no one can gainsay him. Of the relative amount of time as between one age and another we have, however, stronger evidence; if the reader cuts down the 800,000,000 we have given here to 400,000,000, then he must reduce the 40,000,000 of the Cainozoic to 20,000,000. And be it noted that whatever the total sum may be, most geologists are in agreement that half or more than half of the THE RECORD OF THE ROCKS 11 whole of geological time had passed before life had developed to ike Later Palmozoic level. The reader reading quickly through these opening chapters may be apt to think of them roQO 'S/so 600, %0 ^ ' t^4 " > Azottf or Archaeosottf ^ossihh -wi&iovtt U& cctaR If/tdioixb' vLffiiZe traces df lonxia steads ura. 3a» cP^PcxaxaalxxxLae.,Jeij^ ■RskiT' Green, Sctaci caicL liia. Ixka ' Se&m -Ae appeartaiea. oPamf vertiirais. aiaauJsOjge. of Sea Scairpiaas if TxiiotniM. "haa oP'ReMjes. }CiaxiOZOVC ^^ioa c^Mxmmdls, C^vass, & LcccidL 'Farasts. as a mere swift prelude of preparation to the apparently much longer history that follows, but in reality that subsequent his- tory is longer only because it is more detailed and more in- teresting to us. It looms larger in perspective. For ages that stagger the imagination this earth spun hot and lifeless, 12 THE OUTLINE OF HISTORY and again for ages of equal vastness it held no life above the level of the animalculse in a drop of ditch-water. Not only is Space from the point of view of life and human- ity empty, but Time is empty also. Life is like a little glow, scarcely kindled yet, in these void immensities. Ill NATUEAL SELECTION AND THE CHANGES OF SPECIES NOW here it will be well to put plainly certain general facts about this new thing, life, that was creeping in thei shallow waters and intertidal muds of the early Palaeozoic period, and which is perhaps confined to our planet alone in all the immensity of space. Life differs from all things whatever that are without life in certain general aspects. There are the most wonderful dif- ferences among living things to-day, but all living things past and present agree in possessing a certain power of growth, all living things tdke nourishment, all living things wMve about as they feed and grow, though the movement be no more than the spread of roots through the soil, or of branches in the air. Moreover, living things reprpduce; they give rise to other living things, either by growing and then dividing or by means of seeds or spores or eggs or other ways of producing young. Reproduction is a characteristic of life. No living thing goes on living for ever. There seems to be a limit of growth for every kind of living thing. Among very small and simple living things, such as that microscopic blob of living matter the Anuxba, an individual may grow and then divide completely into 1;wo new individuals, which again may divide in their turn. Many other microscopic creatures live actively for a time, grow, and then become quiet and inactive, enclose themselves in an outer covering and break up wholly into a number of still smaller things, spores, which are released and scattered and again grow into the likeness of their parent. Among more complex creatures the reproduc- tion is not usually such simple division, though division does occur even in the case of many creatures big enough to be visible to the unassisted eye. But the rule with almost all 13 14 THE OUTLINE OF HISTORY larger beings is that the individual grows up to a certain limit of size. Then, before it becomes unwieldy, its growth declines and stops. As it reaches its full size it matures, it begins to produce young, which are either bom alive or hatched from eggs. But all of its body does not produce young. Only a special part does that. After the individual has lived and produced offspring for some time, it ages and dies. It does so by a sort of necessity. There is a practical limit to its life as well as to its growth. These things are as true of plants as they are of animals. And they are not true of things that do not live. Non-living things, such as crystals, grow, but they, have no set limits of growth or size, they do not move of their own accord and there is no stir within thenw Crystals once formed may last unchanged for millions of years. There is no reprodiiction for any non-living thing. This growth and dying and reproduction of living things leads to some very wonderful consequences. The young which a living thing produces are either directly, or after some inter- mediate stages and changes (such as the changes of a cater- pillar and butterfly), like the parent living thing. But they are never exactly like it or like each other. There is always a slight difference, which we speak of as individvulity. A thousand butterflies this year may produce two or three thou- sand next year; these latter will look to us almost exactly like their predecessors, but each one will have just that slight difference. It is hard for us to see individuality in butter- flies because we do not observe them very closely, but it is easy for us to see it in men. All the men and women in the world now are descended from the men and women of a.d. 1800, but not one of us now is exactly the same as one of that vanished generation. And what is true of men and butterflies is true of every sort of living thing, of plants as of animals. Every species changes all its individualities in each generation. That is true of all the minute creatures that swarmed and repro- duced and died in the Archseozoic and Proterozoic seas, as it is of men to-day. Every species of living things is continually dying and being born again, as a multitude of fresh individuals. Consider, then, what must happen to a new-born generation of living things of any species. Some of the individuals will be stronger or sturdier or better suited to succeed in life in NATURAL SELECTION 15 some way than the rest, many individuals will be weaker or less suited. In particular single cases any sort of luck or accident may occur, but on the whole the better equipped in- dividuals will live and grow up and reproduce themselves and the weaker will as a rule go under. The latter will be' less able to get food, to fight their enemies and pull through. So that in each generation- there is as it were a picking over of a species, a picking out of most of the weak or unsuitable and a preference for the strong and suitable. This process is called Natural Selection or the Survival of the Fittest.^ It follows, therefore, from the fact that living things grow and breed and die, that every species, so long as the conditions under which it lives remain the same, becomes more and more perfectly fitted to those conditions in every generation. But now suppose those conditions change, then the sort of individual that used to succeed may now fail to succeed and a sort of individual that could not get on at all under the old conditions may now find its opportunity. These species will change, therefore, generation by generation; the old sort of individual that used to prosper and dominate will fail and die out and the new sort of individual will become the rule, — until the general character of the species changes. Suppose, for example, there is some little furry whitey- brown animal living in a bitterly cold land which is usually under snow. Such individuals as have the thickest, whitest fur will be least hurt by the cold, less seen by their enemies, and less conspicuous as they seek their prey. The fur of this species will thicken and its whiteness increase with every gen- eration, until there is no advantage in carrying any more fur. Imagine now a change of climate that brings warmth into the land, sweeps away the snows, makes white creatures glar- ingly visible during the greater part of the year and thick fur an encumbrance. Then every individual with a touch of brown in its colouring and a thinner fur will find itself at an advantage, and very white and heavy fur will be a handi- cap. There will be a weeding out of the white in favour of the brown in each generation. If this change of climate come about too quickly, it may of course exterminate the species altogether; but if it come about gradually, the species, although it may have a hard time, may yet be able to change ' It mig^t IJe called v?ith mgre exactn?s? the Swvivgi of the Fitter, 16 THE OUTLINE OF HISTORY NATURAL SELECTION H itself and adapt itself generation by generation. This change and adaptation is called the Modification of Species. Perhaps this change of climate does not occur all over the lands inhabited by the species ; maybe it occurs only on one side of some great arm of the sea or some great mountain range or such-like divide, and not on the other. A warm ocean cur- rent like the Gulf Stream may be deflected, and flow so as to warm one side of the barrier, leaving the other still cold. Then on the cold side this species will still be going on to its utmost possible furriness and whiteness and on the other side it will be modifying towa,rds brownness and a thinner coat. ,At the same time there will probably be other changes going on;, a difference in the paws perhaps, because one half of ,th?! species will be frequently scratching through snow for it^ food, while the other will be scampering over brown earth. Probably also the difference of climate will mean differences in the sort of food available, and that may produce differences in the teeth and the digestive organs. And there may be changes in the, sweat and oil glands of the skin due to the changes in the fur, and these will affect the .excretory organs and all the internal chemistry of the body. And so through all the structure of the creature. , A time will come when the two separated varieties of this formerly single species will become so unlike each other as to be recognizably different species. Such a splitting up of a species in the course of gen- erations into two or more species is called the Differentiation of Species. And it should be clear to the reader that given these ele mental facts of life, given growth and death and reproduction with individual variation in a world that changes, life must change in this way, modification and differentiation mvist occur, old species miist disappear, and new ones appear. We have chosCTi for our instance here a familiar sort of animal, but what, is true of furry beasts in snow and ice is true of all life, and equally true of the soft jellies and simple be- ginnings that flowed and crawled for hundreds of millions of years between the tidal levels and in the shallow, warm waters of the Proterozoic seas. The early life of the early world, when the blazing sun rose and set in only a quarter of the time it now takes, when the warm seas poured in great tides over the sandy and 18 THE OUTLINE OF HISTORY muddy shores of the rocky lands and the air was full of clouds and steam, must have been modified and varied and species must have developed at a great pace. Life v?as prob- ably as swift and short as the days and years ; the generations, which natural selection picked over, followed one another in rapid succession. l!fatural selection is a slower process with man than with any other creature. It takes twenty years or more before an ordinary human being in western Europe grows up and re- produces. In the case of most animals the new generation is on trial in a year or less. With such simple and lowly be- ings, however, as first appeared in the primordial seas, growth and reproduction was probably a matter of a few brief hours or even of a few brief minutes. Modification and differentia- tion of species must accordingly have been esctremely rapid, and life had already developed a great variety of widely con- trasted forms before it began to leave traces in the rocks. The Eecord of the Eocks does not begin, therefore, with any group of closely related forms from which all subsequent and esxisting creatures are descended. It begins in the midst of the game, with nearly every main division of the animal kingdom already represented. Plants are already plants, and animals animals. The curtain rises on a drama in the sea that has already begun, and has been going on for some time. The brachiopods are discovered already in their shells, accept- ing and consuming much the same sort of food that oysters and mussels do now; the great water scorpions crawl among the seaweeds, the trilobites roll up into balls and unroll and scuttle away. In that ancient mud and among those early weeds there was probably as rich and abundant and active a life of infusoria and the like as one "finds in a drop of ditch- water to-day. In the ocean waters, too, down to the utmost downward limit to which light could filter, then as now, there was an abundance of minute and translucent, and in many cases phosphorescent, beings. But though the ocean and intei-tidal waters already swarmed with life, the land above the high-tide line was still, so .far as we can guess, a stony wilderness without a trace of life. IV THE INVASION OF THE DRY LAND BY LIFE § 1. Life and Water. § 2. The Earliest Animals. WHEREVER the shore line ran there was life, and that life went on in and by and with water as its home, its medium, and its fundamental necessity. The first jeUy-like .beginnings of life must have pferished whenever they got out of the water, as jelly-fish dry up and perish on our beaches to-day. Drying up was the fatal thing for life in those days, against which at first it had no protec- tion. But in a world of rain-pools and shallow seas and tides, any variation that enabled a living thing to hold out and keep its moisture during hours of low tide or drought met with every encouragement in the circumstances of the time. There must have been a constant risk of stranding. And, on the other hand, life had to keep rather near the shore and beaches in the shallows because it had need of air (dissolved of course in the water) and light. No creature can breathe, no creature can digest its food, without water. We talk of breathing air, but what all living things really do is to breathe oxygen dissolved in water. The air we ourselves breathe must first be dissolved in the moisture in our lungs; and all our food must be liquefied before it can be assimilated. Water-living creatures which are always under water, wave the freely exposed gills by which they breathe in that water, and extract tiie air dissolved in it. But a creature that is to be exposed for any time out of the water must have its body and its breathing apparatus protected from drying up. Before the seaweeds could creep up out of the Early Palaeozoic seas into the intertidal line of the beach, they had to develop a tougher outer skin to hold their moisture. 19 20 THE OUTLINE OF HISTORY Before the ancestor of the sea scorpion could survive being left by the tide it had to develop its casing and armour. The trilobites probably developed their tough covering and rolled up into balls, far less as a protection against each other and any other enemies they may have possessed, than as a precau- tion against drying. And when presently, as we ascend the Palaeozoic rocks, the fish appear, first of all the back-boned or vertebrated animals, it is evident that a number of them are already adapted by the protection of their gills with gill covers and by a sort of primitive lung swimming-bladder, to face the same risk of temporary stranding. Now the weeds and plants that were adapting themselves to intertidal conditions were also bringing themselves into a region of brighter light, and light is very necessary and precious to all plants. Any development of structure that would stiffen them and hold them up to the light, so that in- stead of crumping and flopping when the waters receded, they would stand up outspread, was a great advantage. And so we find them developing fibre and support, and the beginning of woody fibre in them. The early plants reproduced by soft spores, or half-animal "gametes," that were released in water, were distributed by water and could only germinate under water. The early plants were tied, and most lowly plants to- day are tied, by the conditions of their life cycle, to water. But here again there was a great advantage to be got by the development of some protection of the spores from drought that would enable reproduction to occur without submergence. So soon as a species could do that, it could live and reproduce and spread above the high-water mark, bathed in light and out of reach of the beating and distre-ss of the waves. The main classificatory divisions of the larger plants mark stages in the release of plant life from the necessity of submergence by the development of woody support and of a method of reproduction that is more and more defiant of drying up. The lower plants are still the prisoner attendants of water. The lower mosses must live in damp, and even the development of the spore of the ferns demands at certain stages extreme wet- ness. The highest plants have carried freedom from water so far that they can live and reproduce if only there is some moisture in the soil below them. They have solved their problem of living out of water altogether. THE mVASlOM Of THE DRY LAND 21 The essentials of that problem were worked out through the vast aeons of the Proterozoic Age and the early Palaeozoic Age by nature's method of experiment and trial. Then slowly, but in great abundance, a variety of new plants began to swarm away from the sea and over the lower lauds, still keep- ing to swamp and lagoon and water-course as they spread. § 2 And after the plants came the animal life. There is no sort of land animal in the world, as there is no sort of land plant, whose structure is not primarily that of a water-inhabiting being which has been adapted through the modification and differentiation of species to life out of the water. This adaptation is attained in various ways. In the case of the land scorpion the gill-plates of the primitive sea scorpion are sunken into the body so as to make the lung- books secure from rapid evaporation. The gills of crustaceans, such as the crabs which run about in the air, are protected by the gill-cover extensions of the back shell or carapace. The ancestors of the insects developed a system of air pouches and air tubes, the tracheal tubes, which carry the air all over the body before it is dissolved. In the case of the vertebrated land animals, the gills of the ancestral fish were first supple- mented and then replaced by a bag-like growth from the throat, the primitive lung swimming-bladder. To this day there sur- vive certain mudfish which enable us to understand very clearly the method hj which the vertebrated land animals worked their way out of the water. These creatures (e.g. the African lung fish) are found in tropical regions in which there is a rainy full season and a dry season, during which the rivers become mere ditches of baked mud. During the rainy season these fish swim about and breathe by gills like any other fish. As the waters of the river evaporate, these fish bury them- selves in the mud, their gills go out of action, and the creature keeps itself alive until the waters return by swallowing air, which passes. into its swimming-bladder. The Australian lung fish, when it is caught by the drying up of the river in stagnant pools, and the water has become deaerated and foul, rises to the surface and gulps air. A newt in a pond does exactly the same thing. These creatures still remain at the transition ^s THE OUTLINE OF HISTORY stage, the stage at which the ancestors of the higher vertebrated animals were released from their restriction to an under-water life. The amphibia (frogs, newts, tritons, etc.) still show in their life history all the stages in the process of this liberation. They are still dependent on water for their reproduction ; their eggs must be laid in sunlit water, and there they must develoj>. The young tadpole has branching external gills that wave m the water; then a gill cover grows back over them and forms a gill cham- ber. Then as the creature'si legs ap- pear and its tail is absorbed, it begins to use its lungs, and its gills dwindle and vanish. The adult frog can live all the rest of its days in the air, but it can be drowned if it is kept steadfastly below water. When we come to the reptile, however, we find an egg which is pro- tected from evaporation by a tough egg case, and this egg produces young which breathe by lungs from the very moment of hatching. The reptile is on all fours with the seeding plant in its freedom from the necessity to pass any stage of its life cycle in water. The later Palaeozoic Eocks of the northern hemisphere give us the materials for a series of pictures of this slow spreading of life over the land. Geographibally, all round the northern half of the world it was an age of lagoons and shallow seas very favourable to this invasion. The new plants, now that they had acquired the power to live this new aerial life, de- veloped with an extraordinary richness and variety. There were as yet no true flowering plants,^ no grasses nor trees that shed their leaves in winter ; ^ the first "flora" con- sisted of great tree ferns, gigantic equisetums, cycad ferns, and kindred vegetation. Many of these plants took the form of huge-stemmed trees, of which great multitudes of trunks survive fossilized to this day. Some of these trees were over 'Phanerogams. 'Deciduous trees. THE INVASION OF THE DRY LAND 23 a hundred feet high, of orders and classes now vanished from the world. They stood with their stems in the water, in which no doubt there was a thick tangle of soft mosses and green Gahlosaax' J.F.H. slime and fungoid growths that left few plain vestiges behind them. The abundant remains of these first swamp forests constitute the main coal measures of the world to-day. Amidst this luxuriant primitive vegetation crawled ,and glided and flew the first insects. They were rigid-winged, four- winged creatures, often very big, some of them having wings 84 THE OUTLINE OF HISTOEY measuring a foot in length. There were numerous dragon flies — one found in the Belgian coal-measures had a wing span of twenty-nine inches ! There were also a great variety of flying cockroaches. Scorpions abounded, and a number of early spiders, which, however, had no spinnerets for web mak- ing. Land snails appeared; So, too, did the first-known step of our own ancestry upon land, the amphibia. As we ascend the higher levels of the Later Palaeozoic record, we find the process of air adaptation has gone as far as the appearance of true reptiles amidst the abundant and various amphibia. The land life of the Upper Palaeozoic Age was the life of a green swamp forest without flowers or birds or the noises of modern insects. There were no big land beasts at all ; wal- lowing amphibia and primitive reptiles were the very highest creatures that life had so far produced. Whatever land lay away from the water or high above the water was still alto- gether barren and lifeless. But steadfastly, generation by generation, life was creeping away from the shallow sea-water of its beginning. V THE AGE OF EEPTILES § 1. The Age of Lowland Life. § 2. Flying [Dragons. § 3. The First Birds. § 4. An age .of Hardship, amd^ Death. § 5. The first appearance of Fur arid Feathers. WE know that for hundreds of thousands of years the wetness and ■ -warmth, the shallow lagoon • conditions that made possible- the vast accumulations of vegetable matter which, compressed and mummified,^ are now coal', pre- vailed over most of the world. There were some cold intervals, it is true; but they did not last long enough to destroy the growths. Then that long age of luxuriant low-grade vegetation drew to its end, and for a time life on the earth seems to have undergone a period of world-wide bleakness. We cannot dispuss fully here the changes that have gone on and are going on in the climate of the earth. A great variety ' of causes, astronomical movements, changes in the sun and changes upon and within the earth, combine to produce a cease- ' less ;fluctuation of the conditions under which life existsi As these conditions change, life, tooj must change or perish. When the story resumes again after this arrest at the end of the Palaeozoic period we find life entering upon a fresh phase of richness and expansion. Vegetation has made great advances in the art. of living out of water. While this Palseozodc plants of the coal measures probably gi'ew with swamp water flowing over their roots, the Mesozoic flora from its very out- set included palm-like cycads and low-grown conifers that were distinctly land plants growing on soil above the water level. 'Dr. Marie Stopes, Monograph on the Constitution of Coal. 25 26 THE OUTLINE OF HISTORY The lower levels of the Mesozoic land were no doubt covered by great fern brakes and shrubby bush and a kind of jungle growth of trees. But there existed as yet no grass, no small flowering plants, no turf nor greensward. Probably the Mes- ozoic was not an age of very brightly coloured vegetation. It must have had a flora green in the wet season and brown and purple in the dry. There were no gay flowers, no bright autumn tints before the fall of the leaf, because there was as yet no fall of the leaf. And beyond the lower levels the world was still barren, still unclothed, still exposed without any mitigation to the wear and tear of the wind and rain. When one speaks of conifers in the Mesozoic the reader must not think of the pines and firs that clothe the high moun- tain slopes of our time. He must think of low-growing ever- greens. The mountains were still as bare and lifeless as ever. The only colour effects among the mountains were the colour effects of naked rock, such colours as make the landscape of Colorado so marvellous to-day. Amidst this spreading vegetation of the lower plains the reptiles were increasing mightily in multitude and variety. They were now in many cases absolutely land animals. There are numerous anatomical points of distinction between a reptile and an amphibian; they held good between such reptiles and amphibians as prevailed in the carboniferous time of the Upper Palaeozoic; but the fundamental difference between reptiles and amphibia which matters in this history is that the am- phibian must go back to the water to lay its eggs, and that in the early stages of its life it must live in and under water. The reptile, on the other hand, has cut out all the tadpole stages from its life cycle, or, to be more exact, its tadpole stages are got through before the young leave the egg case. The reptile has come out of the water altogether. Some had gone back to it again, just as the hippopotamus and the otter among mam- mals have gone back, but that is a further extension of the story to which we cannot give much attention in this Outline. In the Palaeozoic period, as we have said, life had not spread beyond the swampy river valleys and the borders of sea lagoons and the like; but in the Mesozoic, life was growing ever more accustomed to the thinner medium of the air, was sweeping boldly up over the plains and towards the hill-sides. It is well for the student of human history and the human future to THE AGE OF REPTILES 27 28 THE OUTLINE OF HISTORY note that. If a disembodied intelligence with no knowledge of the future had come to earth and studied life during the early Palaeozoic age, he might very reasonably have concluded that life was absolutely confined to the water, and that it could never spread over the land. It found a way. In the Later Palae- ozoic Period that visitant might have been equally sure that life coujd not go beyond the edge of a swamp. The Mesozoic Period would still have found him- setting bounds to life far more limited than the bounds that, are set to-day. And so to-day, though we mark how life and man are still limited to five miles of air and a depth of perhaps a mile or so of sea, we must not conclude from that present limitation that life, through man, may not presently spread out and up and down to a range of living as yet inconceivable. The earliest known reptiles were beasts with great bellie? and not very powerful legs, very like their kindred amphibia^, wallowing as the crocodile wallows to this day; but in the Mesozoic they soon began to stand up and go stoutly on all fours, and several great sections of them begali to balance them- selves on tail and hind-legs, rather as the kangaroos do now, in order to release the fore limtej for grasping food. The bones of one notable division of reptiles which retained a quadrupedal habit, a division of which many remains have been found in South African and Eussian Early Mesozoic deposits, display a number of characters which approach those of the mammalian skeleton, and because of this resemblance to the mammals (beasts) this division is called the Theriomorpha, (beastlike). Ailother division was the crocodile branch, and another devel- oped towards the tortoises and turtles. The Plesiosaurs and IcMhyosaurs were two groups which have left no living repre- sentatives; they were huge reptiles returning to a whale-like life in the sea. Pliosaurus, one of the largest plesiosaurs, measured thirty feet from snout to tail tip — of which half was neckj The Mosasaurs were a third group of great porpoise-like marine lizards. But the largest and most diversified group of these Mesozoic reptiles was the group we have spoken of as )lsangaroo-like, the Dinosaurs, many of which, attained' enor- mous proportions. In bigness these greater Dinosaurs have never been exceeded, although the sea can still show in the whales creatures as great. Some of these, and the largest among them, were herbivorous animals; they browsed on the THE AGE OF REPTILES 29 rushy vegetation and among the ferns and bushes, or they stood up and grasped trees with their fore-legs while they devoured the foliage. Among the browsers, for example, were the Diplodocus camegii, which measured eighty-four feet in length, and the Atlantosaurus. The Oigantosaurus, disinterred by a German expedition in 1912 from rocks in East Africa, was still more colossal. It measured well oyer a hundred feet! These greater monsters had legs, and they are usually figured as standing up on them ; but it is very doubtful if they could have supported their weight in this way, out of water. Buoyed up by water or mud, they may have got along. Another note- worthy type we have figured is the Triceratops. There were also a number of great flesh-eaters who preyed upon these herbivores. Of these, Tyrannosauriis seems almost the last word in "frightfulness" among living things. Some species of this genus measured forty feet from snout to tail. Appar- entlyit carried this vast body kangaroo fashion on its tail and hindlegs. Probably it reared itself up. Some authorities even suppose that it leapt through the air. If so, it pos- sessed muscles of a quite miraculous quality. A leaping elephant would be a far less astounding idea. Much more probably it waded half submerged in pursuit of the herbivorous river saurians. , § 3 One special development of the dinosaurian type of reptile was a light, hopping, climbing group of creatures which de- veloped a bat-like web between the fifth finger and the side of the body, which was used in gliding from tree to tree after the fashion of the flying squirrels. These bat-lizards were the Pterodactyls. They are often described as flying jreptiles, and pictures are drawn of Mesozoic scenery in which they are seen soaring and swooping about. But their breastbone has no keel such as the breastbone of a bird has for the attachment of muscles strong enough for long sustained flying. They must have flitted about like bats. They must have had a grotesque resemblance to heraldic dragons, and they played the part of bat-like birds in the Mesozoic jungles. But bird-like though they were, they were not birds nor the ancestors of birds. The structure of their wings was altogether different from that of birds. The structure of their wings was that of 30 THE OUTLINE OF HISTORY a hand with one long finger and a weh; the wing of a bird 13 like an arm with feathers projecting from its hind edge. And these Pterodactyls had no feathers. Sovaa, ^y. lUptilc^ .At...... Six-'&ctftiuia. dtaxm ii) rama- ^ seaJU § 3 Far less prevalent at this time were certain other truly bird- like creatures, of which the earlier sorts also hopped and THE AGE OF REPTILES SI clambered and the later sorts skimmed and flew. These were at first — ^by all the standards of classification — Eeptiles. They developed into true birds as they developed wings and as their reptilian scales became long and complicated, fronds rather than scales, and so at last, by much spreading and Splitting, feathers. Feathers are the distinctive covering of birds, and they give a power of resisting heat and cold far greater than 32 THE OUTLINE OF HISTORY that of any other integumentary covering except perhaps the thickest fur. At a very early stage this , novel covering of feathers, this new heat-proof contrivance that life had chanced upon, enabled many species of birds to invade a province for which the pterodactyl was ill equipped. They took to sea fish- ing — if indeed they did not begin with it— and spread to the north and south polewards beyond the temperature limits set to the true reptiles. The earliest birds seem to have been car- nivorous divers and water birds. To this day some of the most primitive hird forms are found among the sea birds of the Arctic and Antarctic seas, and it is among these sea birds that zoologists still find lingering traces of teeth, which have otherwise vanished completely from the beak of the bird. The earliest known bird (the ArchoBopteryx) had no beak; it had a row of teeth in a jaw like a reptile's. It had three claws at the forward comer of its wing. Its tail, too, was pe- culiar. All moderli birds havt their tail feathers set in a short compact bony rump ; the Archoeopteryx had a long bony tail with a row of feathers along each side. ; ;~ .- § 4 ' Thi^. great period of Mesozoie life, this second volume of the book of life, is indeed an amazing story of reptilian life proliferating and developing. But the most striking thing of all the story rcimains to be told. Eight up to the latest Meso- zoic Eocks we find all these reptilian orders we have enumerated still flourishing unchallenged. There is no hint of an enemy or competitor to them in the relics we find of their world. Then .'thie record is broken. We do not know how long a time the break represents ; many pages may be missing here, pages that may represent some great cataclysmal climatic change. When next we find abundant traces of the. land plants and the land animals of the earth, this great multitude of reptile species had gone. For the most part they have left no descendants. They have been "wiped out." The pterodactyls have gone ab- solutely, of the plesiosaurs and ichtkyosaurs none is alive ; the mosasaurs have gone; of thp lizards a few remain, the moni- tors of the Dutch East Indies are the largest ; all the multitude and diversity of the dinosaurs have vanished. Only the croco- ,dijes and the turtles and tortoises carry on in any quantity into THE AGE OF REPTILES 33 Cainozoic times. The place of all these types in the picture that the Cainozoic fossils presently unfold to us is taken by other animals not closely related to the Mesozoic reptiles and cer- tainly not descended from any of their ruling types. A new kind of life is in possession of the world. This apparently abrupt ending up of the reptiles is, beyond all question, the most striking revolution in the whole history of the earth before the coming of mankind. It is probably connected with the close of a vast period of equable warm conditions and the onset of a new austerer age, in which the winters were bitterer and the summers brief but hot. The Mesozoic life, animal and vegetable alike, was adapted to warm conditions and capable of little resistance to cold. The new life, on the other hand, was before all things capable of re- sisting great changes of temperature. Whatever it was that led to the extinction of the Mesozoic reptiles, it was probably some very far-reaching change indeed, for the life of the seas did at the same time undergo a similar catastrophic alteration. The crescendo and ending of the Reptiles on land was paralleled by the crescendo and ending of the Ammonites, a division of creatures like squids with coiled shells which swarmed in those ancient seas. All through the rocky record of this Mesozoic period there is a vast multitude and variety of these coiled' shells ; there are hundreds of species, and towards the end of the Mesozoic period they increased in diversity and produced exaggerated types. When the record resumes these, too, have gone. So far as the reptiles are con- cerned, people may perhaps be inclined to argue that they were exterminated because the Mammals that replaced them, com- peted with them, and were more fitted to survive; but nothing of the sort can be true of the Ammonites, because to this day their place has not been taken. Simply they are gone. Un- known conditions made it possible for them to live in the Mesozoic seas, and then some unknown change made life im- possible for them. 'No genus of Ammonite survives to-day of all that vast variety, but there still exists one isolated genus very closely related to the Ammonites, the Pearly Nautilus. It is found, it is to be noted, in the warm waters of the Indian and Pacific oceans. And as for the Mammals competing with and ousting the less fit reptiles, a struggle of which people talk at times, there 34 THE OUTLINE OF HISTORY is not a scrap of evidence of any such direct competition. To judge by the Record of the Rocks as we know it to-day, there is much more reason for believing that first the reptiles in some inexplicable way perished, and then that later on, after a very hard time for all life upon the earth, the mammals, as conditions became more genial again, developed and spread to fill the vacant world. "Were there mammals in the Mesozoic period? This is a question not yet to be answered precisely. Pa- tiently and steadily the geologists gather fresh evidence and reason out completer conclusions. At any time some new deposit may reveal fossils that will illuminate this question. Certainly either mammals, or the ancestors of the mammals, must have lived throughout the Mesozoic period. In the very opening chapter of the Mesozoic volume of the Record there were those Theriomorphous Reptiles to which we have already alluded, and in the later Mesozoic a number of small jaw- bones are found, entirely mammalian in character. But there is not a scrap, not a bone, to suggest that there lived any Mesozoic Mammal which could look a dinosaur in the face. The Mesozoic mammals or mammal-like reptiles — for we do not know clearly which they were — seem to have been all obscure little beasts of the size of mice and rats, more like a down- trodden order of reptiles than a distinct class; probably they still laid eggs and were developing only slowly their distinctive covering of hair. They lived away from big waters, and per- haps in the desolate uplands, as marmots do now ; probably they lived there beyond the pursuit of the carnivorous dinosaurs. Some perhaps went on all fours, some chiefly went on their hind-legs and clambered with their fore limbs. They became fossils only so occasionally that chance has not yet revealed a single complete skeleton in the whole vast record of the Mesozoic rocks by which to check these guesses. These little Theriomorphs, these ancestral mammals, de- veloped hair. Hairs, like feathers, are long and elaborately specialized scales. Hair is perhaps the clue to the salvation of the early mammals. Leading liveS' upon the margin of ex- istence, away from the marshes mi the warmth, they developed THE AGE OF REPTILES 35 an outer covering only second in its warmth-holding (or heat- resisting) powers to the down and feathers of the Arctic sea- birds. And so they held out through the age of hardship be- jt^espi 'iVOl'lUS (JimQitm. vuu^,z6s waite'-iird) jr.RH. tween the Mesozoic and Oainozoic ages, to which most of the true reptiles succumbed. All the main characteristics of this flora and sea and land fauna that came to an end with the end of the Mesozoic age were such as were adapted to an equable climate and to shallow 86 THE OUTLINE OF HISTORY and swampy regions. But in the case of their Oainozoic suc- cessors, both hair and feathers gave a power of resistance to variable temperatures such as no reptile possessed, and with it they gave a range far greater than any animal had hitherto attained. The range of life of the Lower Palaeozoic Period was con- fined to warm water. The range of life of the Upper Palaeozoic Period was con- fined to warm water or to warm swamps and wet ground. The range of life of the Mesozoic Period as we know it was confined to water and fairly low-lying valley regions under equable conditions. Meanwhile in each of these periods there were types in- voluntarily extending the range of life beyond the limits pre- vailing in that period; and when ages of extreme conditions prevailed, it was these marginal types which survived to in- herit the depopulated world. That perhaps is the most general statement we can make about the story of the geological record ; it is a story of widen- ing range. Classes, genera, and species of animals appear and disappear, but the range widens. It widens always. Life has never had so great a range as it has to-day. Life to-day, in the form of man, goes higher in the air than it has ever done before; man's geographical range is from pole to pole, he goes under the water in submarines, he sounds the cold, lifeless darkness of the deepest seas, he burrows into virgin levels of the rocks, and in thought and knowledge he pierces to the centre of the earth and reaches out to the uttermost star. Yet in all the relics of the Mesozoic time we find no certain memorials of his ancestry. His ancestors, like the ancestors of all the kindred mammals, must have been creatures so rare, so obscure, and so remote that they have left scarcely a trace amidst the abundant vestiges of the monsters that wallowed rejoicing in the steamy air and lush vegetation of the Meso- zoic lagoons, or crawled or hopped or fluttered over the great river plains of that time. VI THE AGE OF MAMMALS § 1. A New Age of Life. § 2. Tradition Comes into the- World. § 3. An Age of Brain Qrowih. § 4. The World Grows Hard Again. § 1 THE third great division of the geological record, the Cainozoic, opens "with a world already physically very like the world we live in to-day. Probably the day was at first still perceptibly shorter, but the scenery had be- come very modern in its character. Climate was, of course, undergoing, age by age, its incessant and irregular variations ; lands that are temperate to-day have passed, since the Cainozoic age began, through phases of great warmth, intense cold, and extreme dryness; but the landscape, if it altered, altered to nothing that cannot still be paralleled to-day in some part of the world or other. In the place of the cycads, sequoias, and strange conifers of the Mesozoic, the plant names that now appear in the lists of fossils include birch, beech, holly, tulip trees, ivy, sweet gum, bread-fruit trees. Flowers had developed concurrently with bees and butterflies. Palms were now very important. Such plants had already been in evidence in the later levels of the (American Cretaceous) Mesozoic, but now they dominated the scene altogether. Grass was becoming a great fact in the world. Certain grasses, too, had appeared in the later Mesozoic, but only with the Cainozoic period came grass plains and turf spreading wide over a world that was once barren stone. The period opened with a long phase of considerable warmth ; then the world cooled. And in the opening of this third part of the record, this Cainozoic period, a gigantic crumpling of 37 38 THE OUTLINE OF HISTORY the earth's crust and an upheaval of mountain ranges was in progress. The Alps, the Andes, the Himalayas, are all Cain- ozoic mountain ranges; the background of an early Cainozoic scene to be typical should display an active volcano or so. It must have been an age of great earthquakes. Geologists make certain main divisions of the Cainozoic period, and it will be convenient to name them here and to indicate their climate. First comes the Eocene (dawn of re- cent life), an age of exceptional warmth in the world's his- tory, subdivided into an older and newer Eocene; then the Oligocene (but little of recent life), in which the climate was still equable. The Miocene (with living species still in a minority) was the great age of mountain building, and the general temperature was falling. In the Pliocene (more living than extinct species), climate was very much as its present phase; but with the Pleistocene (a great majority of living species) there set in a long period of extreme conditions — i^; was the Great Ice Age. Glaciers spread from the poles towards the equator, until England to the Thames was covered in ice. Thereafter to our own time came a period of partial recovery. We may be moving now towards a warmer phase. Half a mil- lion years hence this may be a much sunnier and pleasanter world to live in than it is to-day. § 2 In the forests and following the grass over the Eocene plains there appeared for the first time a variety and abundance of mammals. Before we proceed to any description of these mam- mals, it may be well to note in general terms what a mammal is. From the appearance of the vertebrated animals in the Lower Palaeozoic Age, when the fish first swarmed out into the sea, there has been a steady progressive development of vertebrated creatures. A fish is a vertebrated animal that breathes by gills and can live only in water. An amphibian may be de- scribed as a fish that has added to its gill-breathing the power of breathing air with its swimming-bladder in adult life, and that has also developed limbs with five toes to them in place of the fins of a fish. A tadpole is for a time a fish, it becomes a land creature as it develops. A reptile is a further stage in this detachment from water; it is an amphibian that is no THE AGE OF MAMMALS 3d longer amphibious ; it passes through its tadpole stage — its fish stage that is — in an egg. From the beginning it must breathe in air; it can never breathe under water as a tadpole can do. Sovac OKgpcctie jVIeutitttals' > '\ I _ilK.__ Stx-^oattma Jraxm-to ssxac ecsLe Tltiuumi^re (cxarsacuiL C^uant pig) Uuthiili Ixeum (cormvorouf J J.T'.H. Now a modem mammal is really a sort of reptile that has de- veloped a peculiarly effective protective covering, hair ; and that also retains its eggs in the body until they hatch so that 40 THE OUTLINE OF HISTORY it brings forth living young (viviparous), and even after birth it cares for them and feeds them by its mammae for a longer or shorter period. Some reptiles, some vipers for ex- ample, are viviparous, but none stand by their young as the real mammals do. Both the birds and the mammals, which escaped whatever destructive forces made an end to the Mesozoic rep- tiles, and which survived to dominate the Cainozoic world, have these two things in common; first, a far more effective protection against changes of temperature than any other variation of the reptile type ever produced, and, secondly, a peculiar care for their eggs, the bird by incubation and the mammal by retention, and a disposition to look after the young for a certain period after hatching or birth. There is by com- parison the greatest carelessness about offspring in the reptile. '• Hair was evidently the earliest distinction of the mammals from the rest of the reptiles. It is doubtful if the particular Theriodont reptiles who were developing hair in the early Mesozoic were viviparous. Two mammals survive to this day which not only do not suckle their young,^ but which lay ^gs, the Omithorhynchus and the Echidna, and in the Eocene there were a number of allied forms. They are the survivors of what was probably a much larger number and variety of small egg-laying hairy creatures, hairy reptiles, hoppers, climbers, and runners, which included the Mgsozoic ancestors of all ex- isting mammals up to and including man. Now we may put the essential facts about mammalian re- production in another way. The mammal is a famdly animal. And the family habit involved the possibility of a new sort of continuity of experience in the world. Compare the com- pletely closed-in life of an individual lizard with the life of even a quite lowly mammal of almost any kind. The former has no mental continuity with anything beyond itself; it is a little self-contained globe of experience that serves its purpose and ends; but the latter "picks up" from its mother, and "hands on" to its offspring. All the mammals, except for the two genera we have named, had already before the lower Eocene age arrived at this stage of pre-adult dependence and imitation. 'They secrete a nutritive fluid on which the young feeds from glands scattered over the skin. But the glands are not gathered together Into mammse with nipples for suckling. The stuff oozes out, the mother lies on her back, and the young browse upon her moist skin. THE AGE OF MAMMALS 41 They were all more or less imitative in youth and capable of a certain modicum of education ; they all, as a part of their de- 2Asuxuxials (prunijtive auraii^'cameL) 'Dicrorerzis 1ctrabalc>d