relief maps geologically colored. There is a similarly extensive suite of petrological specimens affording a fairly good illustration of the subject of Petrology; and many specimens illustrative of the more interesting features of structural geology.

Agriculture. A collection of more than two thousand specimens of the soils of this State, to which frequent additions are made, fully illustrates the character of the several agricultural regions of California. This material forms the basis for continuous investigations in the agricultural laboratory. It includes also a large number of complete vertical sections of typical soils of the State taken to depths of ten and twelve feet, each foot being separately shown. A general collection of seeds is being formed, for the purpose of study as well as of a seed-control station.

By Act of the Legislature the College of Agriculture received on January 1, 1896, the collection of viticultural and enological apparatus and the library gathered during fourteen or fifteen years by the State Viticultural Commission.

Donations to the museums of the University are gratefully received. Messrs. Wells, Fargo & Co. will transport such gifts to the University gratis if the weight of the package does not exceed twenty pounds. Special instructions for collecting and forwarding any particular kind of material will be furnished to any who may desire them.

LABORATORIES.

The Psychological Laboratory is well equipped for instruction and for research. The entire second and third floors and part of the basement of the Philosophy Building are set apart for this use. The laboratory contains a demonstration room furnished for class instruction, which can be darkened when necessary, and an office used also for conferences. For research and special demonstrations there is an optical room, provided with north light; a special dark room, which may also be used as a silent room, being protected with double walls, floors, and doors; an acoustical room, with a specially devised contrivance for the direct transmission of sound to the silent room; and three other rooms, which can be adapted to any special problems. In addition to these, there is an apparatus room, a photographic room, a battery room, and a shop in which those working in the laboratory can construct the simpler contrivances for special researclf. Besides its own batteries, the laboratory is connected with the central electric power-plant of the University; and a switchboard having terminals of from four to eight wires in each of the above rooms makes electric power from either source available in any part of the laboratory. In addition to this, an independent circuit provides light throughout the building.

The equipment includes the more important psychological instruments, of late pattern, from the best makers. There is also a good collection of models, casts, and charts, of the brain and the sense organs, and a full assortment of materials for demonstration and experiment.

The

The Physical Laboratory occupies the entire basement floors of South Hall and East Hall, and thus secures favorable conditions as regards stability and evenness of temperature. There are set apart rooms for elementary and for advanced work, for photometry, for spectroscopic research with a Rowland grating, for dynamos, and for a workshop. apparatus includes many instruments and standards for fundamental measurements from makers of the best reputation, and the laboratory employs two competent mechanicians, who are continually increasing the equipment from original designs. It offers good facilities to students who wish to pursue the study of physics beyond the limits of the prescribed courses, whether for the sake of physics itself, or in connection with other subjects, like electrical engineering, astrophysics, the practical uses of polarized light, and physical chemistry. Such students may make special arrangements for using the laboratory.

The Students' Observatory (Berkeley Astronomical Department). The equipment of the observatory consists of the following instruments: An eight-inch reflector, gift of the Hon. Wm. M. Pierson; a six-inch refractor with position micrometer; a five-inch refractor, gift of Mr. and Mrs. Herman Oelrichs; a six-inch photographic telescope and a five-inch photographic telescope with a three-inch guiding telescope, all equatorially mounted with driving clocks; a three-inch Davidson combination transitand-zenith telescope; a two-inch altazimuth instrument; a surveyor's transit with solar attachment; spectroscopes; a Repsold measuring engine for measuring astronomical photographs; a Gaertner microscope for measuring spectrograms; an electro-chronograph; a Harkness spherometer; a leveltrier; six sextants; three chronometers; a Howard M. T. clock; all necessary electric connections for recording time and determining longitude by the telegraphic method; a set of meteorological instruments with which observations are regularly recorded and forwarded to the United States Weather Bureau in Washington, D. C.

For particulars concerning the organization and aims of the undergraduate and graduate instruction in the various branches of astronomy in the Berkeley Astronomical Department, consult the "Special Announcement to Students," issued in 1901 by the Lick and Berkeley Astronomical Departments.

Visitors are received at the Students' Observatory on the first Friday of each month, in the evening from eight to ten o'clock.

The Lick Observatory. For circular of information concerning this department of the University, address the Recorder of the Faculties, Berkeley, California, or The Director of the Lick Observatory, Mount Hamilton, California.

The Chemical Laboratories are large and commodious, well lighted and well ventliated, and offer excellent facilities for the study of chemistry. They comprise the following: An Elementary Laboratory for beginners; a Qualitative and a Quantitative Laboratory, each containing all the usual appliances; an Organic Laboratory for special and advanced studies in organic chemistry; a well equipped laboratory for Physical Chemistry; a laboratory for Physiological Chemistry; and two large Research Laboratories. Special rooms are devoted to volumetric analysis, gas analysis, spectrum analysis, and electrolysis. Ample facilities are provided for chemical analysis and for investigations in foods, drinking waters, mineral waters, poisons, etc. A chemical museum, with a large collection of chemical products and apparatus, is open daily for inspection and study.

A Botanical Garden furnishes abundant material for the classes in botany, and affords favorable opportunities for original studies and experimentation. About three and one-half acres are under cultivation. Over two thousand species of plants, one-half of these California species, are being grown, and this number is being constantly increased through the donations of friends and the efforts of the various members of the Botanical Department.

The Botanical Laboratories are well lighted and equipped with the necessary instruments and reagents for work in morphology, histology, and physiology both of flowering and flowerless plants. Special facilities are provided for students desiring to pursue research work.

The Conservatory is situated on the slope between the Botanical Garden and the Students' Observatory. The structure has five subdivisions, arranged for different temperatures, according to the needs of different classes of exotics. The Conservatory, in connection with the old plant houses (which are now used as propagating houses), is used for the important work of plant introduction which has been carried on by the Department of Agriculture for a number of years. In the Conservatory a large collection of exotic plants is kept for illustration in horticultural and botanical instruction. All the decorative plants used at University functions are supplied from the Conservatory collection and whenever possible cut flowers are furnished to the Students' Infirmary.

The old propagating houses, lately improved by the building of an addition to the potting rooms, now serve also as a horticultural laboratory.

The Zoological Laboratories occupy the greater part of the first floor and part of the second of East Hall. The laboratories, both for elemen

tary and advanced work in general morphology, microscopical anatomy, and embryology, are large and well lighted.

Special facilities are offered to students who wish to pursue their studies beyond the limits of the undergraduate courses.

By provision of the Regents, the work of the department may be transferred to the seaside during the summer vacation, it being the purpose of the University to make use of the exceptional advantages in this field offered by the California coast.

The Rudolph Spreckels Physiological Laboratory. Undergraduate instruction is given in the east and west wings of the building erected for the University by Mr. Rudolph Spreckels, of San Francisco. There are laboratory facilities for about forty students. The central part is reserved for research. This part corresponds in its arrangements with the traditional physiological laboratory, and offers all the facilities for work in special physiology. Provision is also made for work in general physiology and experimental biology.

The Department Library, situated in the central part of the building, contains complete sets of all the important physiological journals, and the more important monographs on physiological and related subjects.

The Mineralogical Laboratory is provided with a large collection of minerals, and is well equipped with the necessary apparatus for research work in crystallography both as regards goniometric work and the determination of physical constants.

The Petrographical Laboratory contains a large collection of rocks, and several thousand thin sections. It is supplied with all necessary apparatus for instruction in petrography and for detailed research.

Mechanical and Electrical Laboratories. The Mechanical and Electrical Engineering Building contains the laboratories of steam engineering, hydraulic engineering, and electrical engineering. The equipment of these laboratories is unusually complete in all departments of experimental engineering.

The Machine Shops have, in the aggregate, a floor area of 6000 square feet and comprise the following:

1. The main machine room, fully equipped with metal working machines, and with bench and hand tools.

2. The wood working, carpentry, and pattern rooms, which contain a complete equipment of wood working machines and tools.

3. The blacksmith room.

4. A room for delicate metal work, especially equipped with the finer machines and tools for the construction of special instruments.

Much of the apparatus for use in the laboratories is from original designs, and has been constructed entirely in the machine shops.

The laboratories have a total area of approximately 12,000 square feet, of which 6300 square feet consists of a covered court in which are installed the apparatus and equipment of the hydraulic laboratory. The east wing of the building is set apart for the electrical engineering laboratories, while the north wing of the building is used for steam engineering laboratories.

The mechanical engineering laboratories contain a number of experi mental steam engines, gas engines, and an air compressor, including condensers, hot wells, and apparatus and instruments for obtaining quantitative results in steam and gas engine experiments. Two water tube, high pressure boilers, having an aggregate capacity of 300 H. P., are available for experiments in the generation of steam, these boilers being equipped with oil burning furnaces.

In electrical engineering, the dynamo laboratory contains a 100 H. P. Ball engine which is used to drive through a countershaft electrical generators of various types. In addition, there is also a 50 H. P. Straight Line engine which may be belted to alternating or direct current generators as desired. For constant speed, a 100 H.P., 4000 volt, 3 phase, synchronous motor, directly connected to a countershaft, is available for the driving of smaller alternating and direct current generators. When a variable speed is desired for tests, current is available from the central power station on the south side of the campus and the electrical machinery is driven by motors. The machines in the dynamo laboratory range in size from 100 K. W. down. Direct current, constant potential and constant eurrent types, and single and polyphase alternating current generators, and induction and synchronous motors are all represented in this laboratory, including many dynamo electrical machines constructed by students in the machine shops. Dynamometers of various types are used for efficiency tests. The multiple plug switchboards, of which there are four, may be used either for alternating or direct current and contain in all more than 2000 terminals.

These switchboards are connected with the machines and also with the instrument table, so that tests may be readily and accurately conducted.

These switchboards are connected with the machines and also with the ammeters, voltmeters and wattmeters. A special bank of transformers for the transformation of polyphase currents, including single, 2 phase, 3 phase, and 6 phase current, is connected permanently with the alternating current switchboard, the aggregate normal rating of the transformers being 100 K. W. For high voltage and insulator tests a 10 K. W., 100,000 volt, oilinsulated transformer is used.

The standardizing laboratories contain Kelvin Electric Balances, electrostatie voltmeters, Weston laboratory standard ammeters and voltmeters, Wheatstone and Nalder bridges, and a full equipment of dead beat astatic galvanometers.