144 ® n & e Jyfo**! Proportions of Carlon 



lines from a centre to the edges of the button. Here it was 

 nioft obvious, that from the final lnefs of the proportion of 

 carbon presented to the iron, the refulting product was found 

 aifuming the earlieft ft age of -granulation approaching to the; 

 fteelv {tale. The brilliant concretions obfervable in the fur- 

 face of the button were too indiftinct and ilat for iteel capable 

 of withftanding the hammer. Grams. 



The joint weight of the iron and charcoal amounted to 1393 

 Iron obtain ... 1350, 



Total lofs of weight in the fufion 34 



Ep. XI. Swedifh iron - - 1503 



Charcoal --V th, or 37 grs. 

 The metallic button obtained by the fufion of this 

 mixture weighed - J505 



Gained in weight bv the union of carbon 3 

 equal to ,J th part the firfi weight of iron. The upper fur- 

 lace of this button was fmooth, with a faint impretfion of a 

 chequered cryftalhzation. The under for face pofllued fome 

 large pits, fimilarly, though more perfectly crvftallized. 



The fracture poflefted one {hade of blue beyond that of 

 No. X. A regular granulated furface compofed of flat ob- 

 long cryftals was obfervable, ftill too indiftinct and too much 

 on edire for workable fteel. The weight of charcoal and iron 

 in this experiment amounted to grs. 1539 



Metal obtained - - 1505 



Total lofs of weight In the fufion 34 



Exp, XIT. Swedifh iron - - 1537 



Charcoal f ' th, or 31 grs. 

 From the expofnre of this mixture, a metallic button 

 was obtained, which weighed - - 1533 



Loft in fufion, equal T {-th part. 4 

 The furfaces of this button were uniformly fmooth. The 

 fracture was dLn\k, and dil played a grain peculiar to highly 

 faturated bliltered fteel. When put under the hammer, with 

 a low red heat, it ftood a few blows, but afterwards parted. 

 Weight of mixture employed in the experiment grs, J568 

 $teel obtained - - 1533 



Total lofs of weight 



