J 35 tn the different Propof lions bf Carhori, &c. 



The ctiarcoal had totally difappeared. The metallic bnttot! 

 was regularly cryftallizedj and vveighed looo grains, being 

 exadly the fatlie weight introduced. Befides the button, 

 fome thoufands of metallic globules entirely covered the tides 

 and concave top of the crucible. It was found iniprafticablc 

 to colleiil them all. By eRimation they appeared to be from 

 15 to 20 grains. The frafture of this button was whitifii 

 blue, clear, and polTeffed a luftre fimilar to the fraAure of 

 zinc. An appre.'iimation to grain was vifiblc, and, from mi- 

 nute comparifon, a very early llage of Iteel was indicated. 



Grains. 



The aggregate of the mixture weighed - 1066 

 Button of iron tcoo_, globules taken at 20, - 1020 



Total lofs in the fufion 46 



Exp. VI. Swedifli iron _ _ _ 103^5 



Charcoal ~th, or - 51' grains. 

 The mixture yielded, by fulion, a metallic button 

 partially cryftallized, weighing - - 1032 



Loft in fufiori, equal to ^-fyth part, 3 

 The charcoal had entirely difappeared. The frafture of this 

 button difplayed a very regular grain, fimilar to that of fteel. 

 In fubjefting it to forging and other tefts, it proved to be 

 fleel of a foft quality. Grains. 



Original weight of mixture - ioS6'^ 



Iron obtained _ > _ io'.2 



Total lofs in fufion 54 [- 



jExp. VII. Swedilh iron - _ _ 1055 



Charcoal y\ th part, or 35 grains. 

 A very perfeft fufion was obtained from this expo- 

 fare. The metallic button was found beneath a co- 

 vering of glafs poflefiTed of a white Itreaky furface, 

 the mafs of which was of the tranfparency and colour 

 of a fnioky topaz : it was found to weigh - 105a 



Loft in fi.fion, equal to y4T part the original iron 3 

 In this experiment, alfo, the charcoal had completciv dif- 

 appeared. The prefent produft was minutely examined, but 

 gave no indications of iteel. After being deeply cut with a 

 chifel, it was broken with very great difficulty acrofs the 

 anvil. It was then forged, and plunged hot into water; but 

 did not harden. It generally refembled thofe qualities of iron 

 obtained by fufion with earths and glaffes. This cxperimeiU 

 was repealed four times, and always attended with a fimilar 



rcfultj 



