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Minerals mixed Lea IL. 
Z 
32. §. Thefe things confidered, and other obfervations added here- 
unto, may poflibly give fome directions, not only for the ordering and 
ufing, but even for the making, imitating and tranfmuting of Metals. 
Thus far of Metals. 
33. §. Iwill next give one or two Inftances of tryal upon sulphurs. 
And firft Sulphur vive, with Aqua fortis, maketh an apparent Bulition, 
but it is fome time, before it begins. But the factitious or common Brim- 
ftine, maketh fearce any, if any at all. So that there is no fmall dif 
ference betwixt them. 
34. §. White and yellow Arfenick make no Bullition either with Al- 
kalies or Acids. Wherefore the ftrength of its operation on the Body, 
lies more in a Sulphor thana Salts or ina Salt drowned in its Sulphure. 
35. §. The afhes either of Pit-Coal, or Sea-Coal, make no Effer- 
wefience with Alkalies or Acids, Whence the faline Principle is alto- 
gether volatile, and fublimed away by the fire. 
36. Lastly for Salts, And fir of all, Borax maketh no Effer- 
vefcence nor any Fumes with Ogl of Vitriol or Spirit of Nitre. 
37. §. Oyl of Vitriol and Nitre make fumes or teams, though no 
Effervefcence. 
38. §. GreenVitriol, with Spirit of Harts-Horn, is foarcely moved. 
White Vitriol, with the fame Spirit, maketh a confpicnous buff. And Ro- 
man Vitriol a vehement Effervefcence. Whence the former is the leaft 
acid, and the latter the moft of all, Which alfo confirms what I faid 
before of the like natures of the feveral Asetals to which they belong. 
39. §. Salt of Vitriol, though a fixed Salt, and made by Calcination, 
jet maketh no Effervefcence with the flronget acid 5 but only with Alka- 
lies 5 as may be feen upon their mixture, but much better heard by hold- 
ing the mixture to ones ear. Hence, there are fixed Acids. Which 
further confirms what I have above afferted concerning the nature of 
Gold, fc. That the predominant Salt thereof isa fixed Acid. 
40. §. Sal Martis, with Spirit of Harts-horn, maketh a confidera- 
ble huff. Hence it ismuch more acid than green Vitriol 3 and is there- 
fore a cooler body, 
Ale §. Alnus and Spirit of Harts-horn make a plain Effervelcence. 
42. §. Saccharum Saturni, with Oyl of Vitriol, firs not at alle 
With Spirit of Salt, buffs a little. With Spirit of Nitre much more. 
Hence the acid of the Vinegar, and not the Alkaly of the Lead, is the 
predominant Principle. 
43. $. Common Salt ftirs neither with Spirit of Salt, nor with Spi- 

tH of Nitres nor with Aqua fortis. But with Oyl of Vitriol it maketh 
a creat Effervefcence with noife and fleams. Hence, even common Sale, 
though it be not reckoned amongft alkaline salts, yet is far nearer in 
nature to that, than to an acid. Hence alfo the Spirit of Salt isa fub- 
Ea A.id, and of avery different nature from Oyl of Sulplur or 
itriol. 
44, §. Salt Armoniac, with Spirit of Nitre, fiirreth not. But 
with Oyl of vitriol it maketh a great Effervefcence. Hence Spirit of 
Nitre is a fubalkalizate Spirit. 
45. §. Oyl of Vitriol and Spirit of Nitre,though both acids, yet make 
4 great fuoak 5 greater than that which the Spirit maketh of it felf. 
Which confirms the laft precedent Corollary, 
46. 

