608 



THURASI DENSITY MEASUREMENTS 



ured is 18 mm. in diameter and 15 cm. long, and requires from 

 15 to 30 cc. of the liquid to be tested. 



glass tubes 



Berth 



Terminal -for 

 heat i no coil 



Stirrer 



Inlet for cooling water 



Sea water to 

 be tested 



Bobbin at equilibrium 

 temperature 



volts 



Variable resistance 



Thin copper upon which 

 the heating coil, of 7£- 

 ohms resistance, is 

 wound 



Mercury pack/no 



Bath overflow 



Fig. 1. Apparatus for density determinations. 



The temperature bath is of copper and glass and is made as 

 small as possible; it holds only 270 cc. of water. The lower 

 part of the bath is made of 0.3 mm. copper, on the outside of 



