194 On the Fujiw of Mallealle iron 



the iron than any formerly obtained. One-half of the piectf 

 dreu' ealily into fliape, and formed a fohd hamJfome bar'.j 

 This was fubjcftcd to various lefts, in all of which it exaftly 

 refembled the produfts obtained with the clay and carbonate 

 formerly defcribed. 



The glafs in this experiment, when compared with a mafs 

 of the fame fufed ferfe, was of a darker green colour, poffeffed 

 of an additional (liade of amber. 



Exp. n. The fame experiment, attended with fimifai' re- 

 fults, was performed with equal portions of matter, and a lofs 

 of ^'-^th part fuftained. Grains, 



Exp. III. Fragments of the fame Swedifli iron - 1103 

 Bottle glafs - 55 1^- grains. 



The refult in ao minutes was a finely formed button, 

 weighing - .4 _ _ 1090 



Lofs, equal to f'-jth part, 13 

 This experiment was performed to afeertain if the quality 

 of iron was afteded by a reduction of the vitrid matter. 

 Nothing materially diffcreiTt as to quality could be inferred. 

 The fraclure of the button approached to a regular cryftal- 

 lization, in which fome very perfect cubes of x'-o^h inch upon 

 the fide were formed. Grains. 



Exp. IW . Fragments of Swedtfli iron - 875 



Bottle glafs - 1750 grains. 

 There refulted from this mixture a very perfe6t fufion, 

 accompanied by a very beautifully cryftallized button 

 of metal, weighing - -« - 85o 



Loft in fufion 15 



equal to —7-7^^ P^rt of the original weight of the iron. The 



frafture ot this produft prefented groups of large flat granu- 

 lated cryftals refembling in point of colour No. 3. One-half 

 of the button forced with every appearance of fo-ftnefs and 

 malleability, and formed a folid bar. In fubfequent lefts, no 

 ftiadc of diftintStion could be found betwixt this and the qua- 

 lity of the three former refults. 



It would therefore appear conclufive, that Swedith iron, by 

 fufion with bottle glafs, forms a fpecies of cajl tnaUeable iron 

 exactly fimilar in its ap/pearance and pr.')pefties to that for- 

 merly obtained when carbfinatc of lime and argil were ufed. 

 It is further inferable that ihe refuhing products are not ma- 

 terially afiedled by various proportions of glafs, feeing that 

 an equal portion, a half, and even a double portion, by 

 weight, to the iron, were produftive of no perceptible altera- 

 tion. 



