402 



this way about — 80° for the poijit of solidification, when using a 

 pentane thermometer. Like Githhie before them, Dolezalkk and 

 ScHULZK arrive in tiiis way in vii'lue of their observations at the 

 conclusion that in the system elher-chloroform an equimolecular 

 compound makes its appearance, which is nnore or less dissociated 

 in the liquid phase. 



2. In order to be able to answer with perfect certainty the 

 question Avhether or no a com|iound is formed, it is necessary to 

 determine the melting-[)oint figure of the system, and this is the 

 reason why this inquii-y has been taken in hand. 



The results recorded in the adjoined table were obtained by means 

 .of DK Lkeuw and Zernike's quick and sensitive resistance thermometer, 

 a manufactuie of the Amsterdam anorganic-chemical laboratory. 



When these results ai-e represented in a 7',.Y-diagram, we get 

 tiie following figure. 



-«0»3 



T 



\ether. 



40 



X 



Kig. 2. 



60 



8G 



CHLOROFOBH- 



This figure (2) shows in the first place that the supposition of 

 GuTHHiE, DoLEZALEK, and ScHULZE is correct, and that in this system 



