﻿694 Mr. D. C. Henry on a 



values obtained for N per gram of charcoal are of the same, 

 and that a reasonable, order of magnitude. 



Ficr. 1. 



3 4 5 b a; 



Schmidt's Observations on the Adsorption of Vapours. 

 (1) Carbon disulphide. (2) Benzene. (3) Chloroform. 



Table II. 



Gas. 



T° C. 



Observer. 



or. 



per gm. per gm. 

 charcoal. charcoal. 



Nitrogen 







Titoff 

 Horn fray 

 Chappnis 

 Horn fray 



3-16 

 3-72 

 3-32 

 4-74 

 5-22 



8-72 XlO" 10 8-22 x'10 20 

 4-89 x 10 - 9 7-12xl0 20 

 1-47 xlO" 8 6-04 xlO 20 

 3-17 XlO- 6 5-37 XlO 20 

 fi-OSxlO- 6 8-90 vlO 20 



Methane 



Carbon Dioxide 



Carbon Monoxide... 



8 



-82 

 15 



Hexane 



15 



5-53 2-95 X 10- u 5-99 xlO 20 

 5-28 1 1-86x10-° 10-36 xlO 20 

 5-79 6-30x10-6 ll-59xl0 20 

 4-75 1 2-34x10-6 .5-52x10" 



Carbon Disulphide . 

 Chloroform 



15 

 15 

 15 



" 



Acetone 











