and studies of the departments of civil and of municipal engineering and the office of the department of electrical engineering. The third story contains the elementary laboratory of the department of physics, the drawing rooms, lecture rooms, cabinets, and studies of the mechanical department, as well as the dean's offices, the faculty parlor, and library. The fourth story is devoted to the department of architecture, and contains drawing and lecture rooms, cabinets, a photograph studio, a blue-print laboratory, and the architectural library.

The Laboratory of Applied Mechanics is a brick building. The materials testing laboratory occupies the front, while the rear wing contains the hydraulic laboratory.

The Mechanical Engineering Laboratory is a brick building with a frontage of 120 feet and a total depth of 182 feet. The front section is two stories high, and contains offices, lecture and computation rooms, and a large instrument room. Back of this are three bays with sawtooth roof construction. The middle bay is provided with a concrete testing floor and a 10-ton three-motor traveling crane of 38-feet span. The north bay contains a 5-ton traveling crane and for the present will be used for laboratory work in connection with the departments of civil and electrical engineering and theoretical and applied mechanics.

The Library Building contains the general University library and, temporarily, some administrative offices. The main floor contains the reference room, the reading room, the cataloguing room, and the delivery room, which opens into the second story of the book-stack. The second floor contains the Library School study room, seminary rooms, the Bolter collection of insects, and the administrative offices of the University. The Library School lecture rooms are in the basement. The book-stack is a rear wing to the building, separated from the rest of it by a fireproof wall. The stack will eventually contain five stories, and

will accommodate 150,000 volumes. At present but three stories are fitted with shelving.

The Men's Gymnasium is a three-story building of stone and pressed brick, 100 by 150 feet. On the first floor there is a swimming pool, lined with white enamel bricks, 26 feet wide, 75 feet long, and 8 feet deep at the lower end. This floor contains, also, the general locker room, which is fitted up with all-metal lockers, and with shower, tub, and steam baths; rooms for the University athletic teams; a room for visiting teams; a special dressing room for members of the faculty; and offices for the physical director and athletic instructors. The entire second floor is one large room, which is fitted up with all the modern appliances for gymnastic exercises. The third floor contains an elevated running track, 15 laps to the mile, which is properly banked on the turns to secure the greatest speed and comfort in running.

The Metal Shops is a one-story brick building, containing a lecture room, two office rooms, a machine shop, and a forge shop. The machine shop is 48 by 140 feet. Power is supplied by a 20 H. P. electric motor. A threeton traveling crane of 12 foot span covers the center of the floor for the entire length.

Natural History Hall is occupied by the departments of botany, zoology, physiology, mineralogy, and geology, for each of which there are laboratories, lecture rooms, and offices. There are six laboratory rooms on each of the main floors,-sufficient altogether to accommodate 200 students, besides offering abundant facilities for the private work of the instructors.

The Pumping Station of the University water-works is a brick building, 38 by 73 feet, connected with the Central Heating Plant. Two 8-inch wells, 145 feet deep, supply the University with wholesome water. A ma

sonry reservoir provides for a fire-reserve supply. The pumps, tanks, and connections are arranged to give opportunities for experimental work and also to vary the working conditions in the adjacent hydraulic laboratory. University Hall occupies three sides of a quadrangle, devoted almost exclusively to class rooms.

The Woman's Building, which was opened for use in the fall of 1905, is in pure New England colonial style of architecture, of reddish brown brick, with white stone trimmings. The central part of the structure is the woman's gymnasium. On the lower floor there is a swimming tank, abundant room for lockers, dressing rooms and baths. The upper floor is devoted to the main gymnasium, which is 92 by 50 feet. The play ground adjacent to the gymnasium includes basket ball, tennis, and hockey courts, with ample room for other games. The north wing of the building is given to the department of household science, and the south wing provides rooms for the social life of the women students.

The Wood Shop and Foundry occupies a brick building. The part of the building devoted to the wood shop contains a bench room, lathe room, machine room, and various smaller rooms for lectures, exhibition purposes, etc. The part devoted to the foundry has a large molding floor traversed by a 5-ton traveling crane, and a large basement room for storage of materials.

LABORATORIES*

SCIENCE LABORATORIES

The botanical, geological, physiological, zoological, and ceramic laboratories are in Natural History Hall. The chemical laboratory occupies the building of the same name, already described.

*For a more detailed account of these laboratories, see under the appropriate College.

The physical laboratory is in Engineering Hall.

The psychological laboratory, in University Hall, is well provided with apparatus of many different kinds for use in experimental study, research, and instruction.

ENGINEERING LABORATORIES

The cement laboratory of the department of civil engineering occupies rooms in the basement of Engineering Hall.

The electrical engineering laboratory and the mechanical engineering laboratory each occupies its own building, as already described under "Buildings and Grounds."

The hydraulic laboratory and the materials testing laboratory occupy the Laboratory of Applied Mechanics.

SPECIAL LABORATORIES FOR RESEARCH

The chemical laboratory of the 'Agricultural Experiment Station and the physical and bacteriological laboratories for the examination of soils are situated on the third floor of the Agricultural Building.

The laboratory rooms of the State Laboratory of Natural History are in Natural History Hall.

A Biological Station, equipped for field and experimental work in aquatic biology, is maintained on the Illinois River by the State Laboratory of Natural History. It has its separate staff, but is open to students of the University at all times, on application, and during the summer months to special students not connected with the University.

A laboratory for sanitary water analysis has been equipped with all necessary appliances, and chemical investigation of the water supplies of the state is carried on.

A laboratory of economic geology, for the investigation of clays, lime and cement-making materials, building stones, road metal, and all other mineral substances of

economic value, has been equipped with the necessary appliances for such investigations.

A fully equipped laboratory of ceramics has been recently established for the study of clays and clay products with reference to their properties and the methods of treatment which will produce the best wares.

COLLECTIONS

AGRICULTURAL.-The various agricultural departments maintain collections illustrative of their work, prominent among which are those showing typical specimens of standard varieties of corn, wax models of fruit and vegetables, an extensive horticultural herbarium, specimens of many breeds of live stock, a large collection of farm machinery, and exhibits of negatives and samples showing progress of certain investigations, especially with fruit and corn.

BOTANICAL.-The herbarium contains about 50,000 mounted specimens of plants. The flora of North America is fairly well represented, the collection of species of flowering plants indigenous to Illinois is particularly complete, and a considerable collection of foreign species has been made. The collections of fungi amount to 32,000 named specimens and include a full set of those most injurious to other plants, causing rusts, smuts, moulds, etc. There are specimens of wood from 200 species of native trees and shrubs, which well illustrate the varieties of native wood.

COMMERCIAL.-For its courses in industrial economics and commerce the University has a good working collection of the materials of commerce. A lantern and several hundred slides, a liberal supply of political and industrial maps, diagrams and stereoscopic views illustrating various phases of commerce and industry. The bulk of the articles constituting the commercial museum is the gift of the Philadelphia Commercial Museum.