. 



THE BA CTERIOLOOICA L LA BORA TOR Y 9 



on a felt circle, to diminish the risk of breakage 

 when the bell jar is lowered over the microscope/ 



On the second floor there are five rooms, three of 

 which are occupied by the laboratory assistant. Of 

 the other two rooms, one is used as a library and 

 museum ; while the other is the director's private 

 room. The former room is fitted with an Oertling's 

 balance, a barometer graduated in inches and 

 millimetres, a thermometer with Fahrenheit and 

 centigrade scales, and a large spectroscope. This 

 room is also used for the meetings of the committee. 



The third floor (counting from the basement) 

 contains six rooms. ' The first of these, a small one, 

 is used as a still-room ; the still is connected with 

 the water-pipe and is self -feeding, so that to obtain 

 a supply of distilled water all that is necessary is to 

 turn on the tap and light the Bunsen burner.' A 

 second room the chemical room is fitted with a 

 good supply of gas and water, working benches, 

 evaporating chamber, sandbaths, and the necessary 

 apparatus and reagents for the analysis of water, 

 air, food, and for physiological chemical work. The 

 next room is fitted with a table for histological 

 work, but is chiefly used for blow-pipe work, metal 

 injections (Cathcart's method), imbedding in paraffin 

 and celloidin, and section-cutting by means of the 

 microtome, etc. The same room is also used as a 

 store for some of the glass apparatus. The next 

 room is used as a store for chemical reagents. This 

 is followed by another small histological room ; and 

 finally, a room is set apart for the estimation of 

 urea, albumin, and glucose in urines. 



