 - PHYSICAL ann LITERARY. 347 
it gave a faint green tinfture: tothe other 
half, I added powder of galls; it flowly 
changed to a violet colour, then to: a purple, 
and, after ftanding all night, it was of a ve- 
ry dark blue, inclining to black: into the re- 
_ maining water, with the fediment, I dropt 
 fyrup of violets, and ftirred all about; it 
 caufed a tincture of a deeper green than the 
clear water: all thefe three mixtures, which 
did not exceed an ounce and a half, I pour- 
ed into a chopin of common water; and 
- the whole became of adeep violet colour. 
16. THis falt, after o/. tartari p.d. has 
been dropt upon it, and then diffolved ina 
little water, yields a deep green. 
17. THE falt of this Spaw, after it is 
burnt on a hot iron, exhibites the like phae- 
nomena (15), and always lofes its aluminous 
tafte. 
18. Tus falt turned moift and bubbled on 
a hot iron; and, when calcined in a crucible, 
_ it became of a purple colour, exactly like 
that of the vitrioli Martis calx rubra; and 
there was a manifeft attra@tion of feveral of 
a its particles by the magnet. 
19: NEITHER the falt nor earth of this 
_ ~Spaw, make any effervefcence with /pirirus 
: iia peice ie 
:. - . wuttrioli, 
oe 
