( 287 ) 



wore , proparod and the ('oin|)i-ossil)ilil v «lolcriiiiiicd in (lie iiiixiim' 

 ap[)ai'atiis and xoIiinuMionielcr dcscrÜKMl in ('(unin. X". .S4, March 

 '03. Tli(> nuMliod of ()l)S('r\ati(iii and caicnlalinn lias Ixmmi Irealcd in 

 detail by Kkksom, ('onnn. X". -S.S, ,lan. "04. 



The .ii'ases were prepared l»y (Hslidalion lii-st in ice, sid)se(|n<Milly 

 ill solid carbon dioxide. Vnww pre\ ions conininincalions il will appear 

 thai ill this way pnre carbon dioxide is obtained. Of methvl chloride 

 the same will be j>ro\-e(l in the continnation of this papcM' (§ <S). 



The ^'ables fonnd at the tenqxM-atnre / of the pi'essni-e j», \'olnnie 

 I" and molecnlar composition of nuMhyl chhu-ide .r ai'e uiven in 

 tabic I. 



The values for .v = may be borrowed from Comm. N", 88. 

 For the calculation of these observations we shall ns(^ the ein|iirical 

 reduced equation of state of Comm. N". 71, .buie "01, which is 

 particularly suited for the investij^ation of the degree of validity 



