IN WATER AND CERTAIN ORGANIC SOLVENTS. DAVIS. 51 



Ostw aid's dilution law holds fairly well for the more con- 

 centrated solutions of fuchsine in methyl and ethyl alcohols, 

 and acetic acid. 



The following table gives the value of a for these three 

 solvents where a is denned as 



a = 



('- 



It does not hold for the solutions in water, nor should we 

 expect it to since at even the greatest concentration used, the 

 salt was about 95$ dissociated. 



This investigation was suggested and carried out under 

 the direction of Prof. E. Mackay, and I wish to take this 

 opportunity of gratefully acknowledging his advice and kindly 

 criticism. 



DAI.HOUSIR UNIVERSITY, 

 March 8th, 1911. 



