where it biirnt away to two Drams, 44 Grains : this wc 
alfo boyled in water to fee what fait it held, it fcarce af- 
forded a taft of Salt, fcarce furmounting that we ufua!- 
ly find in the like Quantity of common Vi^ater. 
The Chymifts do generally pals by one material Cir- 
cumftance in their fiery Tryal: rarely enquiring after 
that conliderable part evaporated in the open fire which 
in our prcfent Experiment: proves much the greater propor- 
tion of the Body. There being an ounc« and three drams 
of our two ounces evaporated, oi which we have no ac- 
count, I endeavoured 1^0 fave feme of it, (tlio l conclu- 
ded it impoffible to preferve very much^ by p'acing a 
taper Chimney or Tunnel to receive the Smoa.^as the fire 
and a pair of Bellows raifed it, which fo far fucceeded 
that I catched above two drams of this fuliginous Sub- 
Jiance, and fome drops of a water of a fetid faline Taft. 
To make many experiments with this FroduB it re« 
quires a greater Qiiantity of water then Lithotomifis will 
eafily furniflTus with. The fmoak of our common fires 
gives us 9. Sublimat, whok chy?nical Principles aro no lefs 
conliderable than the bodys from w/;ence they afceod. 
For I lately found them not only to contA'mvolatik Salts, 
Oyles, and Phi gm with, other things, but even a Saltfo 
near to common Sea Salt that it fliot into Cubic Figures ; 
much like to that we lately exhibited here in om y^naly- 
fis of Urine. But feeing it was then objeded that that 
Salt might probably be nothing eife but the common culi- 
nary Salt we conftanty take in with our Food, I have fince 
diflill'dthe'Ur/w^ of Plorfes, that were fed with Flay and 
Oates, and have obtained the lame lort or Salt. Both 
of the/e Experiments confirm Dr, Grep;>"s difcovery of 7na' 
rine Salt in kvev A Plants : wliich I am apt to think was 
Jlntectdent there, ^"o its expofition in the open ^/r, foi: 
Several reafpns too large t'3 behere iiientioo/d : having 
been guilty of a fmall digreiiion already. 
If we now, (Compare this concrete with Tartar, we find 
- N . the 
