Lea. IL with feveral Menstrunins. 
253 
able fault, forthe Apothecary, or any Perfor, to fub/titute the one for 
the other: unlefs he will take tes times as much, or tez times as little 
of the one, as he would havedone of the other : if that will ferve turn. 
51. $. The Stoves already mentioned; (except the great Stomach- 
fione Jare ordinarily generated in the bodies of Animals. Ihave one 
Inftance more of fome other Stoves which are extraordinary. In the 
City of Hereford lives a Maid, who often voids thefe Stones, and in 
the fpace of fome years lat pat, hath voided feveral pounds, of fe- 
veral Colours and Sizes, not only per vias urinarias, but alfo by vo- 
mit, and by ftool. The firft mention made to me of them, was by 
Mr. Diggs,a worthy Gentleman of that City, as a thing that was there 
much wondred at. And fome of them, upon my defire , were fent 
me by Mr. Wellington, an Apothecary inthe fame place. I have 
tryed what feveral acid Menftraums will work upon them; and find, That 
with Oyl of Vitriol, and: efpeially with Spirit of Nitre the great ones make 
a very quick and confpicuons Effervefcence. But the fmall ones, neither 
the white, nor the grey, make any Bullition inthe leat: for in truth, they 
are no other but little Pebbles and Grit-ftones. 
52. $. This being confiderd, and the various colours and mixture 
of any one of the great Stones, being well obferved ; it feemeth plain, 
That although fhe be fomewhat old (above thirty years ) yet may fhe 
have a kind of pecrzz, or difeafed Appetite to Stones, Bones, Wood- 
afbes, Tobacco-Pipes, Chalk, and fach like things; which fometimes 
{wallowing in little lu»ps, fometimes grofly, or finely ground betwixt 
her teeth; they are in her Stomach and Bowels, more or fewer of them, 
cemented together, either with a pituitons, bilions, or fome other more 
or lef glutinous fubftance. And thatby virtue alfo of the faid Cement, 
or any of the faid, or other like alkalizate Bodies, the greater Stones, 
which confift of thofe partly, do make an Effervefcence with acid Li- 
quors. Thus far of Infíances upon the parts of Animals. 1 {hall clofe 
with fome Corollaries deduced from the whole. 
53. $. And firlt, fince we find, that amongítall the Menfuums we 
have made ufe of, Spirit of Nitre, or any very Nitrous spirit, is the 
moft univerfal diffolver of all kinds of Animal Bodies; the beft diffol- 
ver of many others both Vegetable and Mineral, and the only diffolver 
of fome : Henceit is probable, That the great flomachick Menftruum, 
which either difolves, or opens almoft all Bodies which come into the 
Stomach, is a kind of Nitrous Spirit. 
54. 9. Again, Spirit of Nitre being a fubalkaline Acid, and work- 
ing more evidently upon Animal bodies, than other fimpler Acids do, 
which yet are as ffrong; It hence follows, That moft of the Salts of 
Animals axe fubacid Alkalies. How far this conclufion may further in- 
ftru& us, I fhall have occafion to fhew in another Difcourfe. 
55. $. Laftly, there being fo many, fay twenty or thirty degrees, 
from the o to the moft vehement, in the Bullition of mixed Bodies; 
itfeemeth, That Fermentation it (elf, as to the formal notion of it, is 
nothing 
