22S 



ON THE QUANTITY OF CARBON IN CARBONIC ACID. 



100 : 33S2 : : 18*20 : 6*15 grains of oxigen consumed 

 2*49 grains of diamond. 



8*64 

 Calculation by carbonic acid 8*60 



•04 difference. 



or fr«m the 

 oxigen con 



Exp. 2. 



4'01 grs. of 

 diamonds 



8-64: 2*49 :: 100:28*81. 

 Thus, if we calculate upon the oxigen consumed, 100 grains 

 sumed °288l. °^ carbonic acid gas contain 28'Sl of diamond. 



Second Experiment on Diamond, 



Thermometer 48° Fahrenheit, barometer 30*08. Oxigen 

 gas, made as usual, left a residuum of 3 parts in 100. 



Eleven small diamonds, weighing 4*01 grains, were put 

 into the tray. We began with 49*84 cubic inches of oxigen ; 

 and every thing being properly adjusted, kept the platina 

 tube red-hot for a quarter of an hour, and during this time 

 the gas was passed from one gasometer to the other, as in 

 the former experiments. When the tubes, &c. were cooled 

 down to the temperature of the room, all the gas was trans- 

 ferred to gasometer No. 1, and the volume was exactly 

 the same as before the experiment. On examining the tray, 

 all the diamonds were entirely confumed and not a vestige 

 left. 



Lime water absorbed 57*5 parts from 100 

 The test for oxigen 3.9*5 

 Residuum • • 3 



entirely con- 

 sumed. 



100 



60 e 



48 



Correction for temperature. 



0*103 49*84 



12 1*23 



Correction for pressure. 

 30: 3008:: 51*07*51 -CO. 



12 diff. 1*236 add for temp. 51*07 



The 



