Minerals mixed Lea. IL 
32. $. Thefe things confidered, and other obfervations added here- 
unto, may poflibly ‚give fome direétions, not only for the orderin; 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 Sulpbur vive, with Aqua fortis, maketh an apparent Bullition, 
but it is fome time, before it begins. But the factitions or common Brim. 
St ne, maketh fearce any, if any at all. So that there isno {mall 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 Sulphur than a Salt; or in a Salt drowned in its Sulphure. 
35. $- The afıes either of Pit-Coal, or Sea-Coal, make no Efer- 
vefience with Alkalies or Acids. Whence the faline Principle is alto- 
gether volatile, and fublimed away by the fire. 
36. Lalfly for Salts. And fri of all, Borax maketh no Effers 
vefeence nor any Fumes with Oyl of Vitriol or Spirit of Nitre, 
37. $. Oyl of Vitriol and Nitre make fumes or Steams, though no 
Effervefience. 
38. $. Green Vitriol, with Spirit of Harts-Horn, is Jearcely moved. 
White Vitrio), with the fame Spirit, maketh a confpicuous huff. And Ro- 
man Vitriol a vehemem Effervefeence. Whence the former is the Jap 
acid, and the latter the moft of all, Which alfo confirms what I faid 
before of the like natures of the feveral Aetals to which they belong. 
39. $. Salt of Vitriol, though a fixed Salt, and made by Calcination, 
get maketh no Effervefeence with the firongefi acid 5 but only with Alka. 
lies ; 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, fe. That the predominant Salt thereof isa fixed Acid, 
40. $. Sal Martis, with Spirit of Harts-horn, maketh a confidera- 
ble huff. Hence it is much more acid than green Vitriol 5 and is there- 
fore a cooler body. 
41. $. Alnus and Spirit of Harts-horn make a plain Effervefcence. 
42. $. Saccharum Saturni, with Oyl of Vitriol, Birs not at all 
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 flirs neither with Spirit of Salt, nor with Spi- 
rit of Nitre; nor with Aqua fortis. But with Oyl of Vitriol it inaketh. 
agreat Effervefeence with noife and fleams, Hence, even common Salt, 
though it be not reckoned amongít alkaline Salts, yet is far nearer in 
nature to that, than to an acid. Hence alfo the spirit of Salt is a fab- 
alkaline A id, and of a very different nature from Oyl of Sulplur or 
Vitriol. 
44, $. Salt Armoniac, with Spirit of Nitre, flirreth mot. But 
with Oyl of Vitriolit maketh a great Ejfervefcence, Hence Spirit of 
Nitre is a Jubalkalizate Spirit. 
45. $. Oyl of Vitriol and Spirit of Nitre,thongh both acids, yet male 
a creat fmoak 3 greater than that which the Spirit maketh of it felfe 
Which confirms the laft precedent Corollary. 
