C3S On the AJjimly existing between 



75 grains of the same wood, in the state of raspings, 

 found to he equal to IS grains of prepared coal, being mixed 

 * grains of oxide of iron, they were fused together, 



and the result was a metallic button weighing 59 grains. 

 (Equal to 29} per cent, from the oxide of iron.) 

 With the charcoal, the quantity revived was 40 



Increase (equal to <j\ per cent.) - It) 



Experiment III. 

 Charcoal prepared from Holly, 



Composed of oxide of carbon 94- 1 55 

 Ashes - - 5-848 



J 00 parts. 



15 grains of this carbon and 200 grains of oxide of iron, 

 yielded by fusion a metallic result that weighed 44 grains. 

 (Equal to 22 per cent.) 



7T4 grains of raw holly, being equal to 15 grains of char- 

 coal, and 200 grains of oxide of iron, yielded by fusion 

 A neat metallic button weighing 45 grains. 

 Kevived as above with charcoal 44 



Increase (equal to | per cent.) 1 



Experiment IV. 

 Charcoal prepared from Scotch Pine, 

 Composed of oxide of carbon 

 Ashes 



100 parts. 



15 grains of this charcoal and 200 grains of oxide, of 

 iron, being fused together, yielded a metallic button of iron 

 weighing 40 grains, of 20 per cent. 88 grains of raspings 

 of this wood (equal to 15 of charcoal,) and 200 grains of 

 oxide of iron, yielded a button of iron that weighed 



34 per cent., or - - 68 grains. 



Kevived as above with charcoal 40 



Increase (equal lo 14 per cent.) 28 



Experiment 



