528 



Proceedings of the lloyal Physical Society. 



room, where the administrative work of the Laboratory is 

 carried on. 



On the next landing are 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 water and gas. There are eight w^ater taps in the 

 room, seven of which are swan-necked with the double nozzle 

 already described. Two ends of the room and the evapor- 



SEClfNi) FLAT 



Fiff. 8. 



ating chamber are fitted with 10-inch basins. In the 

 corner is a sink with drainers and pegs, similar to those 

 already described. The room is lighted by half a dozen 

 gas brackets, and for the gas supply there are 18 con- 

 nections. On three sides of the room runs a mahogany 

 counter-table, fitted beneath with cupboards, draw^ers and 

 shelves ; and above this on two sides of the room are three 

 shelves at intervals of 9 and 15 inches. On the fourth side 

 of the room is a large evaporating chamber divided into two 

 by a hinged window. The two compartments are ventilated 

 separately into a metal chamber opening into the flue. In 

 this metal chamber a bunsen may be lighted to keep up 

 a current from the evaporating chamber into the flue. At 



