OF GASES AT CONSTANT VOLUME. 
951 
Table IX.—W = 3'0962 grammes. Mean Density = 0'0377. Mean Pressure = 21 'G 
Atmospheres. 
h- 
A. 
- q. 
IV. 
1717 
If •,•00 
17-32 
15-90 
17-01 
15-90 
15-70 
100-12 
100-15 
100-11 
100-09 
100-04 
99-93 
100-25 
536-4 
536-4 
536-4 
536-4 
536-5 
536-5 
536-5 
82-95 
84-15 
82- 79 
84-19 
83- 03 
84- 03 
84-55 
O-lOlO 
0-10405 
0-1031 
0-1038 
0-1032 
0-10395 
0-1046 
16-43 
100-10 
536-4 
83-67 
0-10338 
Correction for spheres = — 0-02031. 
Other corrections = — 0-00030. -sr = 0-08277. 
Dednccd specific heat = O'l 7138. 
The unsteadiness of the results with 3 grammes of CO 3 caused me to carry the 
reduction of mass no further. A test of purity applied to the remaining gas aftbrded 
a result the same as the former test. Both samples were from the one bottle. 
The following experiments were now made on the empty vessel : 
Table X.—Comparison of the Empty Spheres. 
q. 
q. 
q - q. 
'^1- 
16-34 
99-95 
83-61 
-0-0201 
17-29 
99-93 
82-64 
-00202 
17-30 
100-01 
82-71 
-0-0209 
15-60 
99-94 
84-34 
-0-0202 
15-11 
100-07 
84-96 
-0-0201 
83-65 
-0-0203 
These apply to the results in Tables III.-IX., as well as to the results in Tables XI. 
and XII. Some (additive) alterations had been made to the platinum catchwater. 
To these I in part ascribe the discrepancies between Tables II, and X. It is probable, 
too, that a small quantity of the phosphoric anhydride had been carried into the 
sphere in filling it with gas‘for the experiments of Tables III.-IX,, for it was 
observable that the mass introduced, according to the weighings made upon its 
insertion, appeared to be 9’6513, while the addition of all the quantities liberated, 
gave 9‘6339 grammes. As there was certainly no leakage at any time, the Aveights 
obtained upon release of gas were adopted as true weights. 
