ceeded thus ; He took of crude 1 arcar^ 2^ 3 or more pounds 
(according to pleafure) and firft calciDed it flightly and only 
CO fomcblacknelsjtohave, what ismoft neceflaryj a ferment 
to ferment the Tartar with. Having put this into a large por^ 
he poured on it fomuch water^ that it flood an inch high a- 
bove it : Then he gave it at firft a gentle fire to make it luke- 
warm ; which done^ he powred into it half a handful of finely 
pulverifedTartarjand ftiortly after law feme bubbles arife,thac 
increaled more and more. Which perceiving hq continued 
as he had begun^ at feveral times to poare iri more powderof 
Tartar, whereby the fermentation was railed and quickned, 
the bubbles thereupon rifingin fo regular an order^ as if they 
had been natural grapes^ the colour excepted* But here he 
was to keep a very exaft regiment of the Fire^fuch as all Fer- 
mentation requireth, and took care allo^ Icaftby a too copi- 
ous affufion of the laid powder the Ebullition ihould grow toQ 
vehement^ and the pot run over. The fermentation ceafing, 
he put all that was in the pot into an IroQBolt=head;a Glafs one 
being ia danger to be brokenO^o which he often apply'da wet 
linnen cloath^ thereby to hinder a too great boyling up of the 
fermented Tartar^ which elfe will fuddenly runup, and pafs 
into the Recipient it felf. Wherefore the fire is alfo very care. 
fully to be govern'd, and increased by little and little ; though 
at laftit muftbe ftrong,toforceup all the Salt. Which be« 
ing obferv'd by him, he found the grols and feculent Tartar by 
the faid Fermentation fo volatilized^that there remain d nota- 
cy fixt fait in the Caput mortmm. Which he faith he hath expe- 
rienced more than once. He addsj that the liquor obtained 
from thence, having much water in it^ added for the fake of 
the fei'mentatioD3is alio to be muchrecaified^ and that lo far, 
till it appear whitifli 5 which lliews that it holds a dus quantity 
of Volatil Salt. Which Salt, of what value it is^ this Author 
would have us eftimate from the teftimony of Vmi Helmut^ c. 
1% de fd.p, m, 780. and from the wonderful virtuCj himfelf 
laith to have found in both in internal and external affecti- 
ons of the body, and even in Gangreens themfelves ; befides 
that by means thereof he hath prepared forae elTenceSj which 
in vaio he had t^;ied tomrikc by other Menjiruumu 
Another ioftaoce he gives us of the great ufe of Fermentation 
mSeparadnimptm andnoxUmSulphursiv^hich he picfcribethto 
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