STUDIES ON MUSEUMS AND KINDRED INSTITUTIONS. 



495 



KENT CHEMICAL LABORATORY. 



The Kent Chemical Laboratory was named for the donor of the 

 building". It cost about $240,000, and was opened in 1894. It has three 

 stories. On the o-round floor are four lecture rooms, the largest hold- 

 ing 300 persons, a museum, and some workrooms; in the second story 

 there are laboratories for advanced students, and a library. In the 

 third are laboratories for beginners. I mention, in all cases, only the 

 principal rooms. Six private laboratories are provided for the pro- 

 fessors and teachers. For ventilation several fans drive in air of a 

 constant temperature below, and one fan expels above. 



RYERSON PHYSICAL LABORATORY. 



The R3"erson Physical Laboratory was named by the donor of the 

 building in memory of his father. It cost $225,000 and was opened in 



Fig. 72. — University of Chicago. Ryersoii rhy.sical Laboratory. 



1894. It has four stories, and is of especially heav}^ and solid construc- 

 tion, in order to diminish tremors. The walls are wainscoted with 

 marble, and the wall shelves of heavy slate on piers of masonry. In 

 the walls and floors arc a system of ducts and channels, so that pipes 

 and wires may be laid from one part of the building to another with- 

 out difliculty. The heating is automatically regulated according to 

 the direct-indirect system. Injurious eflfects are produced by the 

 engines, three dynamos, and workshops in the basement. On the 

 ground floor are la})oratories for advanced students, mechanical work- 

 shops, etc. In the west wing are rooms free from iron devoted to 



