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Minerals mixed Le&. IL 
the artarcous part of the Urine 3 the events following the mixture here- 
of with the aforefaid Salts, being quite contrary 5 as willbe feen.in the 
Apex of Scurvy-grafs maketh no Luttation with any Acid, 
Hence (as from a former Experiment was above-noted_) it feems, That 
there may bea kind of volatile Salt, which is neither acid, nor alka- 
“ine fuch as this of Scuroygrafs and other like Plants feems to be: yet 
contrary toan acid; as experience fhews in their efficacy againft the 
re ” Rettified Spirit of Wine, both with Spirit of Nitre, and with 
Oil of Vitriol, feverally, waketh a ttle Luttation. Which argues, that 
there is contained, even in this Spirit, fome portion ofa volatile Alkaly, 
25. §. Spirit of Wine, and double Aqua fortis, 4% the frongeft is called, 
make an effervescence fo vehement, as plainly to boil. aie 5g 
26. §. Befides the vehemency hereof, there is another Sirprizing cir- 
cumftance. For whereas all other Liquors which make an Effervefeence to- 
gether, will do it in any proportion affigned, although but one drop toa 
thoufand: thefé two, fe. rectified Spirit of Wine and Aqua fortis, re- 
quire-a certain proportion the one to the other. For if, Seppofe, into fix 
drops of Spirit of Wine jou put but two or three of Aqua fortis, they ftir 
20 wore than if you put in fo much Water : but drop in about feven or 
eight drops of Aqua fortis, and they prefently boil up with very great vehe- 
dency. Hence we may conceive the reafon of the fudden accefs of an 
acute Difeafe, and of its ae Thefe not beginning Sradually with 
the Cafe but then, when the Caufe is arrived unto fuch an dx, or 
fucha certain Proportion, as is neceffary to bring Nature to the con- 
teft. And thefe may ferve for Examples upon Vegetables, 


CHAP? ILE 
What may be obferved of MINE RALS. 
JA V ING given feveral Inftances of tryal upon 
Vegetables; I next Proceed to Mixerals, which, 
Z| for fome orders fake, I thall diftribute into five 
VYo\| or fix forts, Je. Earths, Stones Ores and Metals, 
Sulphurs, and Salts, 
2. §. Firft for Earths, Os! of Vitriol upon 
Ny] Fullers Earth, doth not fiir it, or canfe the leaf 
<< A Bullition. Nor upon yellow Oker, Nor upon the 
Oker which falls from green Vitriol. The fame 
ore poured feverally upon Bolus Ar- 
mena of two kinds, and apon one kind of Terra ENO has none of 
aberia prima, 
both of opacous Stones, and Metals; into which the faid Bolus’s are 
and Sulphurs, 

3. §. 

