1>HYSICAL AND LITERARY. 391 



fediment, 1 dropt fyrup of violets, and 

 flirred all about ; it caufed a tindlure of 

 a deeper green than the clear water : All 

 thefe three mixtures, which did not ex* 

 ceed an ounce and a half, I poured into a 

 chopin of common water ; and the whole 

 became of a deep violet colour. 



16. This falt^ after ol. tartar i p. d. has 

 been dropped upon it, and then dilTolved 

 in a little water, yields a deep green, 



17. .Th e fait of this fpaw, after it is 

 burnt on a hot iron, exhibits the like 

 phasnomena (ij.)* ^^^ always lofes its a- 

 luminous tafte. 



18. This fait turned moid and bub- 

 bled on a hot iron ; and, when calcined 

 in a crucible, it became of a purple co-^ 

 lour, exactly like that of the vitrioli Mar- 

 lis calx rubra ; and there was a manifeft at- 



.1 . tradion of feveral of its particles by the 

 magnet. 



1 9. Nei TH ER the fak nor earth of this 

 fpaw make any efFervefcence with fpiri- 

 tus vitrioli^ oleum viirioli^ or oleum tartaric 

 p» d, when by themfelves, or when dilu- 

 ted 



