Minerals mixed Lea. IL 
"the Tartarcous 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 
Laft Chapter. 
23. $. Spirit of Scuruy-grafs maketh no Luitation 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- 
line 3, fuch as this of Scuruygrafs and other like Plants fecms to be: yet 
contrary to an acid; as experience fhews in their efficacy againft the 
acid Scurvy. 
24. $. Reétified Spirit of Wine, both with Spirit of Nitre, and with 
Oil of Vitriol, feverally, maketh a little Luiation. Which argues, that 
there is contained, even in this Spirit, fome portion ofa volatile Alkaly. 
25. $. Spirit of Wine, and double Aqua fortis, as the Jirongef is called, 
make an effervescence fo vehement, as plainly to boil, 
26. $. aes the uehemency hereof, there is another Surprizing cir- 
cumftance. For whereas all other Liquors which make an Effervefcence to- 
gether, will do it in any proportion affigned, although but one drop toa 
thonfand: thefe two, Te. rectified Spirit of Wine and Aqua fortis, re- 
quire a certain proportion the one to the other. For if, fuppofe, into fixe 
drops of Spirit of Wine you put but two or three of Aqua fortis, they flir 
no more than if you put in fo much Water: but drop in about fever or 
eight drops of Aqua fortis, and they prefently boil up with very great vehe- 
mency. Hence we may conceive the reafon of the füdden accefs of an 
acute Difeafe, and of its Crifis. Thefe not beginning gradually with 
the Canfez but then, when the Caxfe is arrived unto fach an dry, Or 
fucha certain Proportion, as is ceceflary to bring Nature to the con- 
teft. And thefe may ferve for Examples upon Vegetables, 
Gi AP MM 
What may be obferved of MINERALS. 
AVING given feveral Inftances of tryal upon 
Sl Vegetables; I next proceed to Minerals, which, 
for fome orders fake, I fhall diftribute into five 
or fix forts, fe. Earths, Stones Ores and Metals, 
Sulphurs, and Salts. 
2. $. Firft for Earths. Oyl of Vitriol upon 
j| Fullers Earth, doth not fiir it, or caufe the leaft 
=] Bullition. Nor upon ‘yellow Oker. Nor upon the 
i Oker which falls from green Vitriol. The Sime 
Oyl of Vitriol and Spirit of Harts-Horn poured feverally upon Bolus’ Ar- 
mena of two kinds, and npon one kind of Terra figillata, ftir none of 
them. Hence Bolus's are the Beds, or as it were, the Materia prima, 
both of opacous Stones, and Metals; into which the faid Bolus’s are 
tranímuted, by being concentred with divers kinds of Salts and Swlphursz 
which fücceflively flow in upon them. 
3. $. 
