215 



The Effect of Pressi^re on a Cadimum Celi.. 

 By 11. R. Ramsey. 



This work is an extensinii of some \vorIv done in 1901 (Phys. Rev.. 

 Vol. 13, July, 1901), in whicli tlie pressure was raised to 300 atmosptieres. 

 In 1909 there appeared the work of f'olien and Swinge (Zeit. Phys. Chem. 

 07, 5 pp. 513. Sept.. 1909), in wliicli the cell was placed under a pressure 



y*~" 



>.•;. 



Fig. I. 



of 700 atmospheres. "Within the past year the Department of Physics has 

 secured a compression pump extending to 1,000 kilograms per square cent! 

 meter (1 atmosphere^l ,033 kilogram per sciuare centimeter) and inasmuch 

 as Cohen and Swinge's results were not in exact accord witli my former 

 results I thought it well to repeat and extend the work. 



