6* Some Experiments on the Distillation 



common vegetable charcoal. The mass was found to weigh 

 32 grains. Loss by distillation 168 grains. 



Component parts : Volatile matter 84 

 Oxide of carbon 1 6 



1 00 parts. 



Experiment X. 

 Horse-Hoof, 180 grains. — The coal afforded by the distil- 

 lation of hoof was light, spongy, and of a silver- gray co- 

 lour. It was formed by a perfect fusion of the pieces into 

 one mass, and weighed 24 grains. Loss by distillation 156 

 grains. 



Component parts : Volatile matter 86*6 

 Oxide of carbon 13-4 



100 parts. 



Experiment XI. 

 White Horse Hair, 202 grains-. — This operation was car- 

 ried on with a small discharge of flame. The hair was- found 

 resolved by fusion into a light porous coal, of a silvery-gray 

 colour, which weighed 28 grains, having lost by distillation. 

 1 74 grains. 



Component parts : Volatile matter 86*13 

 Oxide of carbon 13-87 



100 parts, 



Experiment XII. 

 Black Horse Hair, 200 grains yielded by distillation a 

 very fine coal largely honeycombed, and of a silvery-gray 

 colour, weighing 38 grains, having lost in distillation l.fi£* 



grains. 



Component parts : Volatile matter 8 1 

 Oxide of carbon 1 9 



100 parts. 



A portion of hair taken from the mane of the same horsey 

 yielded of oxide of carbon 25"14 per cent. 



The subjects of these experiments all afford coal, which 



partakes 



