IX WATER AND CERTAIN ORGANIC SOLVENTS. DAVIS. 51 



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

 centrated solutions of fuchsine iu methyl and ethyl alcohols, 

 and acetic acid. 



The following table gives the value of a for these three 

 solvents where a is defined as — 



\v 

 Xoc 

 Xv 





Methyl Alcohol Ethyl Alcohol Acetic Acid 

 V a a a 



100 4.60 3.48 0.615 



200 4.79 .3.56 0.680 



400 4.83 3.42 0.635 



800 4.75 (6.00) (0.270) 



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

 expect it to sinc-e at even the greatest concentration used, the 



salt was about 950-' dissociated. 



This investigation was suggested and carried out under 

 the direction of Prof. E. ]\Iackay, and I wish to take this 

 opportunity of gratefully acknowledging his advice and kindly 

 criticism. 



Dalhousif. University, 

 March 8th, 1911. 



