SPECIFIC GRAVITY AND DISPLACEMENT OF SOME SALINE SOLUTIONS. 55 



§ 24. The room in which the work is carried out is 16x8 by 10 feet high, the 

 16-feet length being almost due north and south. The room is lighted by a fairly large 

 window on the north wall, and there is a door in the south wall. There is a small fume 

 chest projecting half way along the east wall, closed in by a casement window. 



Against the west wall is a strong, well-made table about 48 x 27 inches, whereat 

 all the observations are made. 



The room is fitted with sfas and electric liffht, and a bench runs the whole width 

 of the room under the window, and is fitted with gas fittings. The room is warmed 

 by a steam radiator. The following plan gives an idea of the general disposition of 

 the room : — 



Window recess, 



same level as 



bench. 



Sink. 



Bench. 

 X Compensating luminous flame. 



O 03 

 0> ■ 







•-d 













hrj\^ 





S. 



B 



> 



o 



f 





'^ y/ 





1 







o- 



-Radiator. 



For a typical working day the 6th December 1911 has been selected. 



On arriving at the laboratory about 10.0 a.m. the room temperature was 17'6'C., 

 although the radiator was working at full pressure. 



The meteorological conditions, such as pressure and relative humidity, were noted 

 and recorded for the purpose of reducing weights "to vacuo" where solutions were to 

 be prepared. 



The temperature of the air by this time was about 18-5° C, and the day was cold. 

 A bunsen was lit in the fume chest, which is at the back of the experimenter when 



