18 
MR. J. W. CAPSTICK ON THE RATIO OF THE SPECIFIC HEATS 
Table II. 
t. 
^ Contr'^ 
2 cOo ■ 
Air, &c. 
7- 
r -9954 1 
1 .1-003 / 
Per’ cent. 
I. 
19-2 
Air 1-88 
1-314 
11 . 
20 
1-009 
„ 1-15 
1-314 
III. 
IG-G 
1-002 
„ 1-71 
1-313 
IV. 
19T 
1-012 
/ SOo -5 1 
1 Aid 2-6 / 
1-332 
Y. 
18-3 
-999 
» -8 
1-300 
VI. 
17-4 
1-002 
„ 1-4 
1-305 
Mean 
1-313 
Method of preparation. 
^Gladstone and Tkibe 
Fean KL AND 
I have no data from whicli to calcidate the correction factor 1 — Ijp. dpvjdv. 
From the fact that the gas is at ordinary temperatures far above its boiling point, 
d pvjdv is probably small and has been neglected. 
§ 5. Methyl Chloride. 
The material was made by passing a stream of hydrochloric acid gas into a boiling 
solution of zinc chloride in methyl alcohol, contained in a flask with a reversed 
condenser. 
In the first two experiments recorded below the issuing gas was passed through 
potash solution, and collected in a gas-holder over strong brine, as it is too soluble in 
water. 
_ 
was admitted into the Kundt apparatus through one set of Geissler bulbs con¬ 
taining potash, and. one containing sulphuric acid. 
As the gas liquefies at — 17° it seemed desirable in order to have greater certainty 
