358 PROCEEDINGS OF THE AMERICAN ACADEMY. 



1.811 



In addition to these tables, Pfeiffer made a few measurements on 

 amylalcohol, monochlor-, dichlor , and trichloracetic ester in the pres- 

 ence of alcohol and water. The solubility of amylalcohol in water is 

 given by Roscoe and Schorlemmer as two parts in a hundred, and I 

 have used this value. I could find no data whatsoever in rej^ard to 

 the chloracetic esters, so I have calculated the values on the false 

 assumption that they are non-miscible with water. The effect of this 

 error is seen very markedly in the case of the monochloraceticester, 

 which is undoubtedly the most soluble of the three. I give these tables 

 in spite of the known inaccuracy, because the absolute values of the 

 constants are, for the time being, of little value, whereas it is essential 

 to show that the same general law covers all substances and that the 

 substitution of chlorine for hydrogen does not affect the action of 

 the Mass Law. The coincidence of the three choraceticesters hav- 

 ing the same exponential factor is probably only superficial, as the 

 correction for the solubilities would alter the exponential factor 

 somewhat. 



TABLE XXXII. 



y = Z c.c. Amylalcohol ; x — c.c. Water ; z — c.c. Alcohol. 

 Formula x {y = 0.02 xf'^ / -i ^ = C ; log C = 0.100. Temp. 9.1o. 



0.097 



