1238 



Journal of Applied Microscopy 



of light buff pressed brick, laid in mortar of corresponding color, and smoothly 

 finished. For a distance of five feet above the floor the color of the brick is a 

 chocolate. 



Illumination is supplied by rows of windows extending up to the ceiling on 

 the east and west walls ; in addition to which electricity is provided for use on 

 dark days and at night. 



Ventilation is through a large stack heated by steam coils. Heating is in 

 part by direct radiation from steam radiators, and in part indirectly from large 

 steam coils placed beneath the perforated stairways entering the room. Besides 

 a large lecture-table provided with gas, water, and sinks, the instructor has at 

 hand movable racks for the exhibition of diagrams used in the lectures. 



Fig. 4. — Laboratory, (d) desks for microscopical work ; (t) tables; 

 (i. t.) instructor's table ; (h) hood. 



A laboratory for practical work in bacteriology occupies the second floor, 

 immediately above the lecture-room. The walls and floor are similar to those of 

 the room below. The ceiling increases in height from the walls, where it is 14 

 feet, to^the center of the sky -light, where it is about 24 feet. With a large sky- 

 light, and with^windows in the three walls, the illumination of this room is all 

 that could be desired. The room is heated by steam, is well ventilated, and has 

 a capacity of 83 students working at one time. The arrangement of the desks 

 may be seen in Figs. 3, 4, and 5. Parallel with the east and west walls are two 

 rows of desks with an aisle of 5 feet between them, while across the southern 

 end there are three such rows separated by aisles of 3' 6". These desks, each 

 one 3' wide, 2' 3" deep, and 2' 8" high, are made of poplar, and are joined 

 together in sets of from four to six, as convenience required. On the low parti- 

 tion (about 2" high) dividing one desk from another, are gas and water, the 

 latter being syphoned from large bottles, held in suitable iron racks. This plan 

 is regarded as preferable to water-taps from the regular house supply, as the 

 latter, even though filtered, is often objectionable, while the bottles can always be 

 kept filled with distilled water. It also eliminates the frequent annoyance of 



