<'M Difiourfe de^ymg the Pra-exijlme ef AlcaJizate (r 
Fixed Salt in any SubjeB ^ before it were exfofed to the 
AB'ton of the Fire : To which is added a Confirmation of an 
Jjjertion, deliver' d in Numb. ioi./>* 6^ ofthefe Traits^ 
YiZ.That Mc^hz^tcor Fixed Salts extra^ed out of the Afhes 
of Vegetables, do nut differ from each other : The fame like- 
wife affirm d <?/VoIacil Salts and Vinous Sfirits ; by the 
Learned Dr. Daniel Coxe. 
/^|"*'H E Jlcalizateov Fix'dSzks ofVkntSj extrafiedout 
f of cbeir Affies after Incineration, or out of Tartar cal- 
cined, do, in my apprehenfion, utkhcrpra-exifi in the Vege- 
tables that affbrded them, before they were exposed to. the 
adion of the ^^"ire ; nor do they differ confiderably^ (I am cer- 
tain, not ferfibly) from each other. 
former part of this Pofition may be thus made 
Out : 
I.I never jet found, that any Vegetable for indeed Ani- 
mal, or Mineral Jfubftance did in the left raeafure manifeft to 
theTafl:^ or by its EfFefts, that it contained any fuch Salt, 
Many Plants and Roots, lightly bruifed, afFeft the eyes and 
nofe after the manner of re>/^^/7 Salts, and feveral do bite the 
tongue, and ftrike upon the palat. Some herbs yield a copi- 
ous Volatil Salt immediately after they are prcfs'd by aeon- 
fiderable degree of beat : And many: forts of Earths do a- 
bound therewith ; fothat it is highly probable, they do of- 
ten adually exift in Vegetables, in the very fame form, where- 
in they appea^r unto us uppndiftiHation from the Herbs them- 
lelves, or from Soot. And that Acid Sales do really exift in 
many Plants, is difplay'd by xtieir Xafts and Effefts. .They 
may a!fo be obtained without ivct or any .artificial jindlyfisy 
as is evident in Tartar, and therepu :ed Effential Salts of ma- 
ny 'Plant s^i A Vcrjuyce, Vineger, and Verdegri^, vyhofe A- 
ciditiesmay be concentred, and made to appear iq a dry- 
form. Now did jilcalies exift in the Plants before the Ana- 
lyjis, efpeciallyfo copioufly asthey fometimes appear after- 
wards, certainly they would betray themfelves by fome 
vifible 
