PLANof SECOND FLOOR PLANofFIRST FLOOR PURDUE UNIVERSITY, LAFAYETTE, INDIANA. SPEED LATHE. The foregoing cut represents a Speed Lathe, designed for light drilling, hand turning and polishing. It will “swing” 10 inches, and has a bed 3 feet long. The bearing surfaces are carefully scraped to fit, and provision is made for “taking up” all wear. The live spindle is hollow, and a plunger is always in position for removing the center. The tail-stock is clamped or released by the movement of a lever, permitting its easy and rapid adjust- ment to suit different lengths of work. The machine, with counter-shaft complete, weighs 220 lbs.; it is very strong and durable. Two such Lathes, tog-ether with patterns for same, have been made complete by students in the Mechanical Department of Purdue University. Horizontal Engine. The foregoing cut represents a 4 in. x 6 in. Horizontal Slide-valve Steam Engine, which, together with patterns for the same, has been wholly made by students in the Mechanical Department of Purdue University. DESCRIPTION OF BUILDING. Mechanical Hall, now in process of construction, will be wholly oc. cupied by the School of Mechanics and Engineering. The building is to be of brick and will contain recitation rooms, drawing rooms, and shop rooms together with other smaller rooms. All a:e high in the walls, well lighted, and well ventilated. The entire building, contain ' nearly 11,000 square feet of available floor surface, is admirably adapt > tue uses for which it has been planned. In the front portion of the building, the ljvw r . >or is occupied by a drawing room 24 ft. x 33 ft., a recitation room 22 ft. x 24 ft., and a small office; the second floor by a drawing room 33 ft. x 44 ft., and a recitation room 16 ft. x 22 ft. The drawing rooms will be provided with high drawing tables at which the students stand while at work. A drawing board and T square will be provided for each table, and there wall be a general supply of large triangles, rubber curves, protractors, beam compasses, etc., for the use of students. The drawing, as well as the recitation rooms will be fitted with black-boards of solid slate set in the walls. In the wings of the building are located the wood-working shop, the foundry, the forge shop, and the machine shops; and connected with these are the tool room, engine room, and a wash and coat room. The wood- working shop, 33 ft. x 80 ft., will contain 20 benches with full sets of bench working tools. 10 turning lathes 3 ft. bed, 1 turning lathe 9 ft. bed, a rotary planer, a circular saw, a scroll saw, and a grindstone. The foundry, 35 ft. x 35 ft., will be equipped with a 16-inch cupola furnace for iron, a crucible furnace for brass, and core ovens, which, with a full supply of sand, flasks, and molder's tools, will afford ample facilities for practice in the art of molding and casting. The forge shop, 35 ft. x 35 ft., will contain 16 forges with anvils and the usual smithing tools for each forge. A part of the whole number of forges have recently been completed by students in the present classes in Practical Mechanics, after a design made specially to meet the requirements of the new shops. They will all be supplied with air blasts by power. The machine shop will contain screw-cutting machine lathes, as follows: 1 of 10" swing, 4 of 14" swing, 2 of 16" swing, and 1 of 28" swing; also a machine planer, a shaper, a universal milling machine, a speed lathe, two vertical drills, an emery grinder, and a grindstone. The machines will be provided with all the small tools necessary to their com- plete and economic action. The same shop will have benches fitted with vises for hand work in metals. Motive power for driving all machinery will be derived from an Atlas Automatic cut-off engine of 35 horse power. The tool room, 8 ft. x 24 ft., will serve as a place of safe storage for small tools and supplies. The coat and wash room is 10 ft. x 35 ft. In one of the lower rooms will be placed a powerful testing machine for determining the strength of materials . By means of this machine, student? will become familiar with the valuable properties of the various woods and metals.