Repository: UIHistories Project: Dedication - New Chemistry Building [PAGE 51]

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exposure and its four windows are fitted with ground glass panes. The equipment includes qualitative reagents and indicator solutions, weight and volume burettes, pipettes, volumetric flasks, cells for electrolytic titration, colorimeters with sets of color standards and suitable balances. The constant temperature room has walls, floor and ceilings insulated with a layer of cork board. The room contains a pier, which is insulated from the earth by a layer of the same material. The tempera ture of the air in the room is controlled by an electric thermostat and heater, and the air is kept in motion by an electric fan. Provision is made for a future installation of brine coils for low temperature work. Along the east side of the building is a series of research laboratories and dark rooms. Two rooms are designed for electrical conductivity and transference investigations. A large constant temperature bath in the doorway between the two rooms serves both of them. The electrical conductance room contains a large sound-proof booth, resting on a thick layer of felt. An adjoining room contains the apparatus for producing and controlling the high frequency alternating current and a still for the production of conductivity water. In this series is to be found also the following special rooms: for the calibration of electrical measuring instruments; for the polarimeter; for the purification, storage and handling of mercury; for investigations in colloid or photochemistry; a dark room for ultramicroscopic investigations and another dark room for photographic work and refractometric measurements. A large laboratory is equipped for the use of students in advanced physical and electrochemistry. In this room is also situated the electrical distribution board for the division. In addition to the regular currents found in other parts of the building this distributing board is provided with 250 volt a. c. and d, c. connections. There are several offices and private laboratories for the instructional staff; the general office of the division is provided with a collection of books and reprints and a large plotting table with drafting equip: ment. Opening off this room is the office and private laboratory of the professor in charge of the division. Two other offices with private laboratories are udvantageously placed.. An ingenious device permits some (48)