t. Bati 
i reguires 
Let. IL with feveral Menftrunms, 
251 
utents, From this and fome of the following Experiments, it alfo ap- 
s, That the salt which concutsto the generation of Gravel or of 
a Stone in the Kidneys or Bladder, isof a very different nature from the 
Salt of Urine. 
33. 9: Next for Dungs. And firft, dryed Goats-dung makes with 
Spirit of Nitre, a final Bullition, but no elevation. That of Mice the 
. And that of Cows. So that of all I have tryed, thefe three fir the 
34. $. Goofe-dung, with Spirit of Nitre, makes a =, mail Bulli- 
tion and fome elevation. But it requires time. Oyl of Vitriol flirs it 
not. 
35. $. Album Grecum, with Spirit of Nitre, befides innumerable 
fall bubbles, rifes up with fome great ones, exačly refembling the huffing 
up of Left or Barm. Alfo with Oyl of Vitviol it maketh fome little froth, 
but flowly. So that it fhould feem, that the Bones area little opened by 
{ome acid Menstrunm in the Dogs ftomach (as the body of Steel is in its 
preparation with Sulphur) whereby it becomes a good mild Topick in 
Quinzies. A 
36. §. Hens dung, with Spirit of Nitre, makes a very great bullition 
and buff: greater and quicker, than any of the rest above-named. 
37. $. But of all I have tryed, Pigeons dung, with the fame Spirit, 
maketh the greateft and the quickeft Efervefeence and hüffs and that not 
without fleatus. Yet neither the fame Dung, nor that of Hens, is moved 
in the least with Oyl of Vitriol. The Caufe of fo great an Effervefcence 
in thefe, more than in the reft, is that white part whichis here mixed 
in a great quantity with the Dang. Which white part, defcendeth 
not from the Stomach, but is an Excrement feparated from the Blood 
(as the Urine in other Animals ) by a peculiar Orga», which evacuates 
it into the Intestinum redium 5 whence, together with the Stercus it is 
excluded. Hence it is evident, That in the faid mhite part of Hens, 
and efpecially Pigeons dung, is contained a great quantity of a vola- 
tile Alkaly. 
38. $. Iproceed to Salts. And firft Salt of Blood and Urine both 
atake a more durable Effervefcence with Acids, than doth salt of Worm- 
mood, or Salt of Fern. Hence the former are more alkaline, than 
the latter. 
39. $. Again, though divers other Animal Salts will not ftir with 
Spirit of Salt, or with Oyl of Sulphur or Vitriol yet the Salt of Blood 
will make an Effervefcence with all kinds of Acids. Whence it is further 
argued to be highly alkaline, and very proper for the corredtion, of 
all forts of preternatural Acids in the body. There is little doubt, but 
that Spirit of Harts-horn will do thelike, 
40. $. The Gravel which is precipitated out of Urine 5 with Oyl of 
Vitriol makes no bullition inthe leaft. Nor with ftrong Spirit of Salt. But 
with Spirit of Nitre, it makes a very great one, with Effervefcence and 
fteams. From hence it appears, That there is much difference to be 
made in the ufe of acid Dinreticks, Nephriticks, &xc. 
41. $. And that I may not altogether omit to mention, what may 
be fo much for the good of mankind, I do here declare, That for pre- 
venting (I fay not, the breaking, but preventing ) the generation of 
the Stone, either in the Kidneys, or inthe Bladder, there are not bet- 
Pp2 ter 
