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Parts of Auimals mixed Led. II 
5 Ie A As Eee Se 
8. ¢. Harts-Horn makes a confiderable Bullition and huff, ever with 
Oyl of Vitriol, which the rest of the Bodies abovefaid, will not do. But 
with spirit of Nitre, it makes yet a greater. From the foregoing Ex- 
periments, and almoft all that follow, what is before afferted of 
the Salts of Vegetables and Minerals, is here alfo evident concerning that 
of Animals, feil. That it is not made, but only feparated by the fire. 
It likewife hence appears, That the proportion of Salt in the forementi- 
oned parts is very differents and that therefore fome ofthem are never, 
and none of them but with good difcretion, tobe fubftituted one for 
another in Medicine. As alfo, that there is a different proportion of 
salt in the feveral Avimals themfelves, to which the faid Parts belong. 
g. §. Next for fhells 5 as thofé of Lobfters, Eggs, Snails and Oifters : 
all which make an Effervefcence, both with Oyl of Vitriol, and Spirit of 
ire. But with Spirit of Nitre the greatest. Lobfter-(hells make a confiderable 
Bullition and huff,but no noife nor fieams. Egg-fhells make a Bulhition and 
huff, with fome noife, but no fleams. Snail-fells make an Effervefcence 
with woife and fleams. Oyfter-fhells make one with the grateft noife and 
thickeft fleams. Hence we may judge, in what cafe to adminifter ove 
more appofitely than azother. As allo iz what proportion, according to 
their different ftrength. Some may be better for Children, as being 
milder. Or fora Body whofe very tharp Blood or other Humors, ate 
more eafily kindled into Ferments. Or elfe may be fafelt, to avoid a 
fudden precipitation of the Humors 5 or for fome other caufe. 
10. §. Oyfter-bells, and the reft above-faid, make a quicker Effer- 
vefcence, not only with Spirit of Nitre, but even with Spirit of Salt, thaz 
they do with Oyl of Sulphur, or Oyl of Vitriol. So that thefe bodies, as 
well as Metals, have their proper Menftramms whereby they are be 
diffolved. 
11. §. Egg-fhelis calcined, make with Oyl of Sulphur, or Oyl of Vi- 
triol, or Spirit of Nitre, a greater Efferve/cence, than when uncaleined. 
As alfo with fteams which uncalcined, they produce not. The like is 
een in calcined Opfter-fells, And the longer the Calcination is continued, 
the quicker and fironger will be the Effervefcence. This LT trjed at feveral 
terms, from a quarter of an hour, to five hours. So that after fo long a 
Calcination, they make an Effervefcence almof(t inftantaneous. ‘The reafon 
hereof is,Becaufe the feveral Prixciples whereof the Shells confift, being 
relaxed, and the Sulphur for the greateft part, driven away by the fire 5 
the remaining Salt lies now more open and naked to the attaque of the 
Menftruum, fo foon as ever they are mixed together. From hence it is 
plain, That Egg-/hells, and the others above-faid, being burvt, are far 
‘fronger Medicines, than when waburnt. It is hereby likewife evident, 
That a great portion of their Sait, is nota volatile, but a fixed Alkaly. 
Tothefe may be fubjoyned all kinds of thelly Injecfs. I will inftance 
in three or four. 
12. §. And firft Bees, with Oyl of Vitriol, flir not in the leaft. With 
Spirit of Nitre they make an exceeding fall Bullition, without any eleva- 
jon, 
13. §. Cochinele (the Neft ofan Infect ) makes fome Bullition with 
Oy! of Vitriol, but very fiall: for the bubbles are not to be feen without a 
Glas. But with Spirit of Nitre the Bullition is more viftble, and joyued 
with fome elevation. 
14. §. 

