8 



THE PROPERTIES OF SOLUTIONS. 



[CH. I. 



Use the apparatus shown in fig. i. In the outer chamber (c) 

 place a mixture of ice and water and solid sodium chloride, or a 

 saturated solution of salt. 



Fig. i. Beckmann's freez- 

 ing point apparatus. 



Fig. 2. 

 Beckmann's 



Ther- 

 mometer. 



In the tube A place enough distilled water to cover the bulb 

 of the Beckmann thermometer D. This is graduated to i/iooth C. 

 and can be read by means of a magnifying glass to 1/1000 C. The 

 thermometer must not touch the sides or bottom of the tube A. 



