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Exp. 5. A bottle of my own cyder, fent me from 

 a friend in Devonfhire as genuine, was now fub- 

 jedlcd to the above chemical teds, that the refult 

 might be compared. It however underwent no 

 material change, except from the phlogifticated al- 

 cali, which gave a faint grcenifh tinge, but no vi- 

 fible precipitation. 



Exp. 6. Polished Iron. A knife-blade being 

 immerfed a few hours in a glafs of cyder-wine, 

 when dried exhibited a blackijh brown mark, inter- 

 fpeiTcd with fhades of a copper colour. The wine 

 at the fame time afiumcd a darker hue, from a 

 flight impregnation of the iron. 



Exp. 7. Solution of Vitriol of Copper — be- 

 ing dropped on the polifhed part of the blade, when 

 dried gave a fimilar mark, but of a brighter brown. 



Exp. 8. Residuum. A pint of cyder-wine being 

 evaporated in a tin veflel to a thick extradl, was 

 next placed in a crucible, and, with an addition of 

 tallow, was calcined to a black powder. This re^ 

 Jiduum was examined, and as no metallic particles 

 appeared, a pint of fpring water was poured upon 

 it, and after it had flood all night to fubfide, it was 

 decanted into three fcparate glaffcs. 



Into 



