of Vegetable Substances. 1 1 7 



blue. The product in coal was clear, and shining, each 

 corn entire, and partially connected in groups, which, how- 

 ever, separated upon being exposed to air. Weight 50 

 grains; having lost by distillation 1QO grains. 



Component parts : Volatile matter 79' \6 

 Oxide of carbon 20*84 



100 parts. 



Experiment XXVI. 



Fine Black Tea, 240 grains— The result of this distillation 

 was a slightly prismatic coal, to appearance very little al- 

 tered in shape, bulk, or colour. It weighed 74 grains. 

 Loss in distillation 166 grains. 



Component parts : Volatile matter 69' 16 

 Oxide of carbon 30*84 



100 parts. 



Experiment XXVII. 

 Gunpowder Tea, 120 grains. — This substance afforded a 

 small portion of flame during the operation of distilling. 

 The result was a firm compact coal, thoroughly welded to- 

 gether by means of a silvery-gray species of coal, perhaps of 

 resinous extraction. The whole surface of the mass, wnich 

 resembled in shape the interior of the retort, was covered 

 with fine prismatic shades. The grains of tea had not^ 

 though welded, lost any part of their shape. The coal thus 

 obtained weighed 39 grains. Loss by distillation 81 grains. 

 Component parts : Volatile matter 67*5 

 Oxide of carbon 32*5 



100 parts. 



Expcrim ent X X V II I . 



Coffee Beans, 240 grains. — The distillation of this substance 

 disengaged a considerable portion of (lame. The beans were 

 found in the state of a beautiful prismatic coal of the most 

 lively and elegant shades. The whole were destitute of ad- 

 hesion, and seemed to possess nothing of the welding pro- 



H 3 perty. 



