316 On the Quantity of Carlonin Carbonic Acid, 



gas was transferred to gasometer No. 1. and the volume 

 •was exactly the same as before the experiment. On examin- 

 ing the tray, all the diamonds were entirely consumed, and 

 not a vestige left. 



Lime water absorbed 57*.5 parts from 100. 



The test for oxygen 39'5 



Residuum - 3 



Correction for pressure. 

 30: 30-08: :57'07 : 61-20. 

 The volume of gas at the mean was therefore 51-20 cubic 



inches. 



100:57-60: : 51-20:29-44. 

 Then 29*44 cubic inches of carbonic acid gas were 

 produced. 



100:47-26 :: 29-44: 13-91. 

 13'91 : 401 :: 100: 28-82. 

 Then, according to this experiment, 100 grains of carbo- 

 nic acid contain 28-82 diamond. 



Calculation by oxygen. 

 100 : 33-82 : : 29-44 : 9-95 grains of oxygen consumed 

 4-01 of diamond 



13-96 

 Calculation by carbonic acid 13-91 



•05 difference. 



13-96: 4-01 : : 100 : 28-72. 



Then, calculating by the weight of oxygen employed, 

 100 grains of carbonic acid contain 28-72 diamond. 



The precipitate in lime water from the gas produced in 



the combustion of diamond, appeared to us denser than that 



from the combustion of charcoal. 



In 



