32a On the Quantity of Carbon in Carlonic Acid^ 

 100 : 55: : 51'37 : 28-25. 

 Therefore 28*25 cubic inches of carbonic acid gas were 



produced. 



100 : 47-26 : : 28-25 : 1335 grains. 

 13-35 : 3-8 : : 100: 28-46. 

 Then, according to this experiment, 100 grains of carbonic 

 acid contain 28-46 of the carbonaceous part of the plumbago. 

 Calculation by oxygen. 

 100 : 33-82 : : 28-25 : 9-55 grains of oxygen 

 consumed 3-80 plumbago. 



13-35 

 Calculation by carbonic acid 1 3-35 



First Experiment on Animal Charcoal. 

 Thermometer 60° Fahrenheit, barometer 30-23. 

 Muscular fibre distilled in a coated glass retort left a black 

 shining coal, 4 grains of which were put into the tray. Our 

 oxygen left a residuum of 2 parts in 100. The tray and its 

 contents being placed in the platina tube, was heated to 

 redness for 8 minutes. The first time the gas was passed, a 

 lambent flame filled the whole length of the glass tube, and 

 the gas became turbid or milky. It was passed frequently 

 through the heated tube, but we observed no repetition of 

 the flashes. Hence we conjecture, that if the diamond had 

 contained hydrogen we should probably have had a similar 

 appearance. After the experiment all the apparatus was, 

 as usual, perfectly tight, and the volume of gas unaltered. 

 On examining the platina tray a minute portion of charcoal 

 remained, and a quantity of saline matter adhered to it so 

 firmly, that it became difficult to ascertain the quantity of 

 carbon consumed, and we forbore to make the calculation ; 

 we however examined the gas. 



Lime water absorbed 40 parts from 100 



The tests for oxygen 54 



Residuum - 6 or an increase of 4 per cent. 



100 



Second 



