On the Affinities of different Earths for Carbon. 31 



their application. Through their assistance we become ac- 

 quainttd with some of the laws by which the omniscient 

 and eternal Creator soverns the universe, and are enabled 

 to predict their effects in distant ages. Our condition be- 

 comes superior to the common lot of humanity, and we 

 may be held out to the world as an example of the perfec- 

 tion to which it is possible for the human species to arrive. 



Arnold, Nottinghamshire, 

 October 13, 1804. 



IV. Experiments to ascertain whether there exists any 

 Affinity betwixt Carbon and Clay, Lime and Silex, se- 

 parately or as Compounds united ivith the Oxide of Iron 

 forming Iron Ores and Iron Stones. By David Mushet, 

 Esq. (f the Colder Iron-lVorks. 



[Continued from our last volume, p. 344.] 



U NDER the same class of mixture the following experi-; 

 inents were performed : 



VIII. Pure silex six parts, or - 120 grs. 

 Oxide of iron four parts, or - 80 

 Charcoal 1 -40th of the compound, or 5 



This mixture was very pcrfcctlv reduced, and a glass ob- 

 tained whose surface possessed a clouded coppcrv green co- 

 lour. The fracture showed a much less perfect, thouah 

 dense glass, the colour of which was a rusty yellowish 



frecn. Beneath was found a verv neat spherule of mallea- 

 le iron which weighed 12 grains^ and equal to 6 per cent. 



IX. Pure silex - - IGOgrs. 

 Oxide of iron . - - 80 

 Charcoal l-20th, or - 10 



The result of the fusion of this mixture was a glass si- 

 milar, though more perfect throughout, to the forujcr. A 

 fine metallic button was found below the glass which 

 weighed 22 grains, and equal to 11 per cent. 



X. Pure silex - - 120 grs. 

 Oxide of iron - - 80 

 Charcoal, 1-lOth, or - 20 



This mixture approached somewhat to infusibility. A 

 rough half vitrified green mass, very cellular, was found in 

 the crucible. Two pieces of iron were found which weighed 

 26 grains, equal to 13 per cent. The colour of the earthy 

 parts was a rich green mixed and spotted with rustv yellow. 



XI. Pure 

 4 



