The Anaconda Copper Mining Company: brick department; the manufacture of clay and silica brick of the highest degree of refractoriness and of all shapes.

Engineering.

Anaconda New Reduction Works: general power plants;

large triple expansion condensing Corliss engines belted to line shaft; two and four stage air compressors driven by cross compound Corliss engines; rotary blowers of the Connersville and Root types, direct connected to Corliss engines; rotary blowers, rope driven from induction motors; Stirling boilers equipped with plain grates; rotary converters and transformers for the high tension current brought in from the hydro-electric plants.

BUILDINGS.

SIMON GUGGENHEIM HALL-Administration Building.

This building, the gift of Senator Simon Guggenheim, of Denver, was erected and furnished at a cost of $80,000. The corner-stone was laid by the A. F. and A. M. of Colorado, October 3, 1905. It is one hundred sixty-four feet long by fifty-seven feet wide and is surmounted by an ornate tower. The first floor is devoted entirely to the Department of Geology and Mineralogy, and includes lecture room, laboratory, office, two work rooms and public museum; the second floor contains the library, the office of the President, Secretary, and Registrar, the Faculty Room and the Trustees' Room; the third floor contains the Assembly Hall, two lecture rooms for Mathematics and two offices. The building was dedicated October 17, 1906.

HALL OF CHEMISTRY.

This is a continuous group of brick buildings, comprising the buildings of 1880, 1882, and 1890. The combined buildings of 1880 and 1882 contain the main chemical laboratories. In the building of 1890 are located the office and laboratory of the professor of Chemistry, the chemical lecture room, the Museum of Applied Chemistry, two recitation rooms, the laboratories for gas and water analysis, and the Freshman drawing room.

ASSAY BUILDING.

This building, a brick structure forty-six by ninety-two feet, was built in 1900 through funds contributed by the late W. S. Stratton, and enlarged in 1905 to allow for the installation of a new equipment of furnaces of the gasoline type. The design and equipment of this building are such as to make it probably the best of its kind in the country.

GYMNASIUM.

This building, costing $65,000, was completed in September, 1908. The first floor contains a room for boxing and wrestling, besides shower baths, locker room, and swimming pool, finished in white marble and tiling.

The second floor contains the offices and a large club room. The third floor is the gymnasium room proper, fifty-five by one hundred five feet without posts. A gallery accommodates two hundred spectators.

HEATING, LIGHTING, AND POWER HOUSE.

The power plant recently erected at a cost of forty thousand dollars, was designed to furnish light, heat, and power to the entire school. It is a simple but artistic brick building, eighty-three by one hundred and twenty-two feet, with concrete floors and tile roof. The building is divided lengthwise into an engine room thirty-four feet wide, and a boiler room forty-five feet wide. A conduit six feet wide and seven feet high surrounds the engine room below the floor and is used for steam and electric mains. A brick-lined steel stack one hundred twenty-five feet high carries all smoke to the upper air and away from the buildings.

HALL OF PHYSICS.

This building, constructed of red pressed brick, consists of two floors and a basement, and was completed in the fall of 1894. The upper floor contains two physical laboratories, one for electricity and magnetism, and the other for heat and sound, an instrument room and office. The physics lecture and apparatus room, the photometry room, the physical laboratory for mechanics and light, the balance and apparatus room as well as a private office and laboratory occupy the first floor. The basement contains the electrometallurgical laboratory, pyrometry and high temperature laboratory, electro plating room, a magnetic testing laboratory, a laboratory for the study of radio-activity and rare metals by spectroscopic methods, a Junior electrical laboratory, a storage battery room and switch board with connections to all parts of the building.

STRATTON HALL.

The corner-stone of this building was laid by the A. F. and A. M. of Colorado, on November 20, 1902, and was completed in January, 1904. The basement wall and first story are of Lyons sandstone, in broken ashlar, topped by a story of gray Golden brick. The building is finished on the interior with red pressed brick. Little wood is used, except in the floors and staircases. The basement accommodates the metallurgical and ore dressing laboratories. The first floor contains two large lecture rooms, each with apparatus room and private office. The second floor, in one-half, accommodates the surveying and mechanics in one large lecture room, with apparatus room and private office, and in the other half a drafting room. The third floor is devoted entirely to a large drafting room for the Senior class. The structure was named in

honor of the late W. S. Stratton, whose gift of twenty-five thousand dollars made the building possible.

RESIDENCE OF THE PRESIDENT.

This is a brick building of two and one-half stories. built in 1888.

It was

CARPENTER SHOP.

This is well equipped for the special demands which are continually arising in a technical school. The work varies from ordinary repair work to the careful construction of special apparatus needed in the various departments of the school.

MACHINE SHOP.

What has been said of the carpenter shop is equally true of the machine shop. It is imperative that the school have shops of its own, in order to keep its mechanical apparatus in proper working order, as well as to construct such apparatus as is necessary to carry on any new or original work. The machines of both shops are driven by direct connected motors.

LABORATORIES AND EQUIPMENT.

MINERALOGICAL AND GEOLOGICAL LABORATORY
AND CABINET.

Under the name cabinet is embraced not only the distinctively display collections, which may perhaps be called the cabinet proper, but also the other collections that have been prepared mainly for the purpose of class instruction. These collections are necessarily changing rapidly from year to year, as new material is constantly being added. This new material is obtained partly by purchase, but mainly by direct collecting, and by means of exchange with other institutions. The display collections are not classified systematically, but are arranged in different cases with a view to displaying certain groups of minerals or minerals from certain localities.

The college has prepared a printed list of exchange material, covering both minerals and rocks. The list will be sent to all who wish to arrange for exchanges. Correspondents should state what material they are prepared to offer in exchange. Letters should be addressed to Professor H. B. Patton, Golden, Colo.

MINERALOGICAL LABORATORY.

Aside from the special advantages due to location, the Department of Geology is admirably equipped for practical teaching. The