m 252 ~ Puts of Animals mixed Lea IL 
ter Medicines in the world, than fome certain Preparations of Nitre, 
duly adminiftred. Whoever (hall think that any kind of acid, as Oy) 
of Sulphur, Oyl of Vitriol, Spirit of Salt, or the like, will have the fame 
effects, will find themfelves much deceived in their practice. 
42. $. Iconclude with Stones. And firft, Spirit of Nitre droped up- 
on a Stone of the Kidneys or Bladder, produccth the very fame efi, as 
npon the Gravel in Urine. That is to fay, it makes it boil and buff up, 
until at length it is perfeäly difoloed into a foft Pulps which neither Oyl 
of Sulphur, nor Oyl of Vitriol, nor Spirit of Salt will do; nor give the leaft 
touch towards its diffolution. This confirms what ¥ faid before of the 
ufe of Nitre and Nitrous Spirits, if duly prepared and adminiftred, a- | 
bove any other Acids, againft the breeding of the Stone. 
43. $. Pearls, with any Acid, make the like Effervefcence, as do Oy- 
fter-fhells. But Magistery of Pearls, as ufually prepared, flirs not at all, 
with any Alkaly or Acid, So that as to the effeét frequently intended by 
it, it is very infignificant 5 as of that of Corals hath been faid, 
44. $. Crabs Byes, with any Acid, make an Effervefcence, almoft as 
quick as that of Oyfter-fbells. 
45: Crabs Eyes likewife calcined, make a fironger Effervefnence, than 
when uncalcined. So that thefe, as well as Shells, contam a fixed 
Alkaly. 
46. $. The Stones in Whitings heads make a Strong Effervefcence 
like that of Oyfter-fhells. 
47- $. Stone of humane Gall, Stirs not with Oyl of Vitriol. But with 
Spirit of Nitre maketh a little bullition juft upon mixing, and after a con- 
JSiderable time, alittle froth. Much lefs than what was obferved before of 
the Gall it felf. So that it feemeth to be generated of the Gall coagu- 
lated by fome Acid, which. hath already refracted the Alkaly wherewith 
the Gall abounds. This confirms the ufe of thofe Medicines in the Joun- 
dies, or any other bordering Diftafe, which deftroys thofe Acidities 
by which the Gall is curdled or coagulated, and fo rendred more 
difficulty feparable into the Guts. 
48. $. Since the firft publifhing ofthefe Obfervations,Mr. William m 
Matthews an Apothecary in Ledbury, fent me part, as I take it, ofa 
Stomach-ftone, as big as a Wallnut of the largelt Size, voided by a wo- 
man about 82 years of age, fometime after an Aytume Fever. It con- 
fifteth of the fame Strie, as the Bezoar Stone; and maketh fome Bulli- 
tion with Spirit of Nitre. 
49. $: Bexoar, neither the Western nor the Eaftern, doth ftir at. all 
with Oyl of Vitriol. 
50. $. Western Bezoar, with Spirit of Nitre, makes a very little thin 
froth, and that's alls and that it doth very flowly. But Oriental Bezoar, 
with Spirit of Nitre, after fome time, maketh a very great Effervefeence, 
froth, elevation, noife, and fieams (as if you poured Oyl of Vitriol upon Salt 
of Tartar) till it be wholly diffolued by the affnfed Spirit, and turned into 
almoft a blood-red. Hence it may feem tobe no mean Remedy againft 
fuch fretting and venenate acids, as oftentimes in Fevers, and other Di- 
Stempers, lye about the Stomach, and are thence frequently tranílated 
to the Heart, Brain, Nerves, and other parts, The difference likewife 
betwixt the Weftern and the Baftern Bezoar, is fo great, that in any 
café of danger, and where the Bezoar is relyed upon, it is an cn 
able 
