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fteryofVkriolatTartarjand very impertinently prefer itoftcQ 
io their prefcriptiods to the true Vitriolae Tartar it felf. This 
Earth iodced hath a Saline taftc ^ but thefe Salts, as is ufual iq 
all PrecipitatioDSj did only adhereto the matter precipitated 
and may by a repeated ablution be eafily feparated 5 which 
done^thcre remains nothing but an utterly infipid Earthj which 
can have no other virtue but that of cxficcation. Wherefore 
after the fclf fame manner, whilft the Aci^ part of the crude 
Tartaris udited with the Alcalifate of the Salt of Tartar, the 
Earth alfo of the Fixt Salt of Tartar in the faid fermentation 
will be precipitated. 
The greateft difficulty being thus difpatchV^ our Author 
proceeds in the third place to a lefler, yet remaining, which 
is 5 That the Acid part, by means of which the Earth was prc- 
cipitatedj detains the volatil Alcalifat part,and fixeth it anew; 
fo that his Volatil Salt of Tartar hath hitherto acquired do 
greater degree of volatility, than crude Sal Armoniacot the 
Flowers thereof are known to have. For thefe, though Aey 
are made up of volatil parts, yet they diffufe no odour be- 
fore the feparation of the volatil parts 5 they alfo endure the 
Air ; which no volatil falts, truly fucb, will do : Wherefore 
they cannot yet be reckoned among Volatils^ ftriflly fo call'd^ 
Now then, to give to this Volatil Alcali of Tartar the laft 
and bigheft degree of Volatilifation, the Author cfteems it bc- 
ceffary, there ihould be made a New addition of Fixt Salt of 
Tartar, which in the fame manner, as before it had freed the 
Alcalifat part of crude Tartar from its Acid, muft here alfo take 
from the manifcft Acid of crude Tartar the Alcalifat part of the 
^l'^\^,^'l^f ^"^^^^^ y ^^^^^ from Earth 5 whereby 
this Alcalifat part of the Salt of Tartar, truly volatilifed, be- 
ing joined to the water (which was before added for the free 
aaion of the Salts,) will conftitute a moft Volatil Spirit,which 
he faith IS coagulable, without addition, into volatil cryftals, 
having the perfea: tafte of Tartar, 
Sdfar this Author of the Volatilifation ofFix't Alcalies,andp$r'^ 
ticHiarly^ofr^^^ concerning which 'tis wiOi't by fome of 
our Philofophical Chyinifts here.that this Author would pleafe 
to mai^e good proof; i. That all Salts are Volatil before Gal, 
cination, 
