Lea..IL 
There are fome known Obfervations of this mature x but there is no An= 
thor, I think, who hath given us a Syfteme of Experiments upon the 
Subject: The performance whereof is here intended. 
The Experiments may fer too numerous tobe of one make. But no 
` lfa number would have anfivered the defign of an Univerfal Survey 5 
which, though lefs pleafing, proves the more infiruitive in the end : not be> 
ing like angling with a fingle Hook 5 but-like cafting a Net againft a fhole > 
with affurance of drawing up Jomething:  Befides the advantage of com- 
paring many together; mhich being thus joyned, do oftentimes, like 
Figures, figrifie ten times more, then fianding alone, they would have 
dones ~ 
How far the Corollaries all along fubjozned have made this good, is 
left to the Reader to judge. And alfo, to add to them, fo many more, as 
be pleafes: for I make my own Thoughts no mans Meafare. 
CRTAP E 
What is generally to be obferved upon the Affufion of the 
Menítruum ; and what, particularly of Vegetable Bo- 
dics. s 
ey HE Bodies whereupon I made tryal, were of all 
kinds, Animal, Vegetable, and Mineral, Among 
Vegetables, fachas thefe, feil. Date-flones, Ginger, 
Colocguthis, Pyrethrum, Hawthorn-flones, Stapkif- 
agria, Euphorbinm, the Arenule in Pears, Senton 
Milii Solis, Tartar, Spirit of Scuroygrafi, Spirit 
of Wine, &c. 
2. $. Amongft Minerals, feveral forts’ of 
Earths, Stones, Ores, Metals, Sulphurs, and salts, 
3. $. 'Amonglt Animals; fach as thefe, fèis. Hairs, Hoofs, Horns, 
Shells, and fhelly Infetts, Bones, Fleph, and. the feveral Vifcera, Silk, 
Blood, whites and Yelks of Eggs, Sperma Ceti, Civet, Musk, Caftor; 
Gall, Urine, Dungs, animal Salts and Stones. 
4. $. The Liquors which I poured hereipon feverally, were thefe, 
Je. Spirit of salt Armoniac, Spirit of Harts-Horn, Spirit of Nitre, A- 
gia fortis, Oyl of Salt, Oyl of Sulphur, and Oyl of Vitriol 5 commonly 
fo called. 
5: $. Inthe Mixture of thefe Bodies, two things, in general, are 
all along to be obferved, viz. Firft, which they are, that make any, 
orzo Lutfation. For, as fome which ftem to promife it, make none: 
So, many, contrary to expeétation, make a confiderable one. 
6. $. Next, the manner wherein the Luédfation is made 5 being with 
much variety in thefe five fenfible Efes. 1, Bullition5 when the 
Bodies mixed produce only a certain quantity of froth or bubbles 
2. Elevations when, like Pafte in baking, or Barm in the working of 
Beer, they (well and huff up: 3. Crepitations when; they make a 
kind 
239 
