OX THE QUANTITY OF CARBON IS CARBONIC ACID* QOJ 



peatedly passed from one gasometer to the other .;• the tube The combus- 



did not become white hot, as in tbe experiment with charcoal, 



because in this case the combustion went on more slowly. 



When every thing was cooled to tlue temperature, of the room, 



the gas was'all passed into No. 1, by pressing down the receiver 



of No. 2, and the volume was precisely the same as when we 



began the experiment. O n drawin g out the tray, we observed Residuum an 



that some of the diamonds were reduced to a minute speck, ename ^ 



and all of them resembled opake white enamel: there was no 



discoloration in the tray, nor any residual ash whatever ; the 



unconsumed'parts weighed 1*40' grains; the original weight 



was 3'Qj • 2-49 gr». con- 



,../• sumed. 



1*40 



consequently 2*49 grains' were consumed,. 



i 



We could not perceive any dullness on the surface of the mcr- No moisture- 

 cury in the geometers, or any appearance of moisture. appeared. 



On introducing limewater .to. 100 parts of the gas in the 

 eudiometer^ a dense white precipitate was formed, and 3$ 

 parts absorbed; the test for oxigen absorbed Go, and a.resi- Residual gas 

 iluum of 4 was left. increased -01. 



Correction for temperature. 

 60° 450)49'S4(0:10:3 4<J\84 



56* 4 -41 add for temp. 



4 difference ; 412 80*36 



Correction f6r pressure. 

 30: 30'20 ;:io*25: 50*58. 



The quantity of oxigen at the mean was 50'5S cubic inches. 

 100 :3<i : : 50*58 : 18 '20 cubic inches. 



The quantity of carbonic acid gas produced wasl&*20 cubic 18 2 cub. inch. 

 i ' carbonic acid 



,nchcs - produced, - 



100 : 47-26 : : 1S'20 : : 8'GO grains. 



8*00: 2-49:: 100 : 28;95. " 



Then 100 grains of carbonic acid gas contain 28*95 of dia- containing 



mond. " 2895 b ? wt - 



of diamond. 



Q 2 Calculation 



