PHYSICAL CONSTANTS OF SATURATED SOLUTIONS. 



215 



CAESIUM Alum. 



Solubilities in Jena glass bull). 



Numbers in IVth column are derived from 

 assumption that anhydrous salt is ('So, A1 2 (SO,),. 



THALLIUM Alum. 



VI. 



Con- 

 centration. 



1460 

 839-3 

 505-0 

 360-2 

 255 1 

 186-1 

 133-7 



Solubilities in platinum crucibles. Numbers in IVth column are calculated for 

 N 2 A1 8 (SO,),. 



In conclusion, I am glad to have this opportunity of thanking Mr. E. G. HARTLEY 

 for his help in the observations on the densities at the boiling-points, and 

 Messrs. NEVILLE and WHETHAM forthe kind interest they have taken in the work, 

 and for several suggestions. 



