6 On the different "Proportions (/ Carbon 



Gained in fufion, equal to -^th part the weight of Grains^ 



iron employed 43 



Charcoal difappeared - - 97 



Lofs in the fufion 54 

 Collective weight of the mixture - grs. 1247 



W\ ; ght of Gallic button - grs. 1168 

 Charcoal not taken up - - 25 



"93 



Total lofs in this experiment 54 



Exp. VI. Swedifli iron ... 880 



Charcoal — th, or - grs. 73 



This was firfficiently heated to produce fufion. 

 When cold, there was found upon the furface 

 of the metal a portion of very black charcoal 

 weighing - t - 12 



Loft in the fufion, equal to 83 1 per cent. 61 

 The metallic button poflTefTed a uniformly fmooth 

 furface, partially covered with carburet, and weighed 920 



Gained by the combination of charcoal, equal to —d 

 part - - . - - 40 



Collective weight of the mixture originally intro- 

 duced ... grs. 953 

 Charcoal not taken up - grs. 12 

 Iron obtained » *• 920 



932 



Loft in the fufion 21 

 Charcoal difappeared • grs. 61 



Iron gained in weight - - 40 



Total lofs in this experiment 21 

 From the refults of thefe experiments it becomes obvious 

 that bar iron may be converted into the fineft qualities of 

 crude iron by the addition of any portion of charcoal from 

 i to T ' a th P art i ts weight : that in paffing from the malleable 

 to the carbonated crude ftate, it uniformly gains in weight by 



a combination of carbonaceous matter equal to — r , - — j, th, 



20 i 19*10 



rfv th > 77T th > ix tb > ~ d; avtra S c r^P^t * ts °wn 



weight. x 



It is here again worthy of remark, that in all thefe expe- 

 riments 



