' An Index of fom Experiments made in this 
fhort Treatife. 
SEveral Stones of the Bladder and /(zdnhs were diftill d, 
all afforded volatile urinous Salts ; which Ferment up- 
any Acids. Bones werediftill'd and found to be ot a- 
grcQoble Principles. 
Petriji'd Wt^ter affords only frefh and clear water up- 
on diftillation. 
Calculi examined Hydrojiatically , yfr^vo, found in pro- 
portion to their Bulk of water as to 4. 
We weigh'd Flint, Cryjial, petrifi d Water ^ Welch Dia- 
monds y petrtfi d Wood in water, and found them all very 
near of a fpecific Gravity and almoft as heavy again as 
our calculous matter. 
We weigh'd Bones Hydrojlatically and found them 
twice as heavy as their Bulk of water. 
Bones not eafily wrought on by common Acids^ onlj 
by nitrous ones and that without Ebullition. 
Various unfuccesful attempts made todiffolve the Cal- 
JuSy hy acid and Acrimonious Menftruums, feme were Fe- 
getable and fome Mineral, as Spirit of Salt, of Vinegar^ 
of Venus, Oyl oi Vitriol, ^c, alfo with Al\alifat acria, 
• as Sal Fraxini (which Corrodes Glafs J Lapis Infer nali ^ . 
but none would touch it except w/^r^a/. 1 
The Coagulation oi Spirit of Wine has ho place J 
here 
Expe- 
