4 On the different proportions of Carbon 



Collective weight of the iron and charcoal originally Grs$i 

 introduced - grs. 1327 



Iron obtained in the fulion - grs. 928 

 Charcoal not taken up - 290 



121S 



Total lofs in this experiment 109 



Exp, II. Svvedifh bar iron - - 925 



Charcoal Jth part, or - grs. 231^ 

 This mixture, after a fimilar expofure, was 

 completely fufed. When cold, the crucible 

 was found to contain of very fine charcoal - 125^ 



Charcoal difappeared in the fufion, equal to 



45 per cent. - 106 



The metallic button was richly carbonated, and weighed 972 



Gained in weight by the union of charcoal, ecjual to 



— 5-th part of the original weight of the iron, - 47 



Charcoal difappeared - - - 106 



Loft in fufion 59 

 Collective weight of iron and charcoal originally in- 

 troduced - - grs. 1156^ 

 Iron obtained in the fufion grs. 972 

 Charcoal not taken up - 125^ 



1097 



Total lofs in this experiment 5 ( > 

 Exp. III. Swedifli bar iron - - 915 



Charcoal 7 'th, or - grs. 152 



This mixture was fubjected to a fimilar heat, 

 and a perfect fufion effected . There was found 

 of charcoal not taken up 6$ 



Charcoal difappeared, equal to 57 per cent. 87 

 The metallic button refembltd the produce of No. I, 

 and II., and weighed - - - 960 



Gained by the fufion, equal to — rth part the firft 



2 °T5 



weight of the iron - 45 



Charcoal difappeared - - Sy 



Loft in the fufion 42 

 Collective 



