34 On the Affinities of 



The greatest part of this compound was reduced to per- 

 fect fusion. A small portion was found intimately con- 

 nected, but in the state of a powder, upon the surface of 

 the glass. The metallic button was similar to the last, and 

 weighed - . - 120 grs. 



Globules collected - - 5 



Total 125 



Equal to 25 per cent. 



The glass was still more transparent than in the former 

 experiment. The green tinge had entirely disappeared, and 

 was succeeded by a lead blue'colour, which always manifests 

 itself when the separation of the metallic particles has been 

 complete.- 



Recapitulation of experiments with chalk and oxide of iron 

 in the proportion of six of the former to four of the latter. 

 Exp. I. 1 -40th of charcoal, no iron revived. 



The following table of comparison will, at one view, ex- 

 )ribit the very various results that take place in the process 

 of separation, effected entirely by the nature of the earths, 

 ■Cvhich in all cases must inevitably form a chief component 

 part of our iroia ores and iron stones. 



General Table of the Results of' the Fusion of Clay, Slkx, 

 and Lime, and Oxide of Iron j with various Proportiomi 

 of Cliarcoal. 



Were 



