
Led. IV. 

A 
DISCOURSE 
Concerning the 
ESSENTIAL and MARINE 
Salts of Plants. 
Read before the Royal Society, December ir: 
1676. 

CHAY. 1 
In which is fhewed the way of making both an ESSE N- 
TIAL and a MARINE Salt, out of the LIXI- 
V IAL Salt of a Plant. 
yy OMETIME fince, I took the boldnefs to pre- 
72 {ent my thoughts to this Honourable and Learned 
7 Body in a Diféourfe concerning Mixture. Wherein 
Y 1 have endeavoured to lay fuch a Foundation, as 
J, might hereafter reduce the Doéfrine hereofto Ex- 
Y perienceand Praétifes and to demonftrate,the Power 
Ls liad tlas 35,3 Ufe of Artificial Mizcture. And in further proof 
of what is t afferted, I have fince made a continuation of Expe- 
riments upon the fame Subject, in Two Methods. One in the Mix- 
ture of feveral Menftrunms, both Acid and Alkaline, with all Sorts of 
Bodies, ‘The Other, by calcining them, or, as it were, #ixeng them 
with the Fire. 
2. ¢.. I fhall now proceed toa Third, which is, the mixing them 
with the Aer or expofing them to jt another of Natures grand Men= 
firuums 5 which gocs fometimes further than the Fife it felt, in the di 
fohation 

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