( ?77 ) 
likewi^b to be feparated : The very fame is done from 
the Sea Water, though in a vaftly larger Proportion. 
i\nd, laflly, there is a black and dark Liquor to be 
feparated tho’ this is but a dark Way which the Doctor 
makes ufe of to exprefs himfelf, it cannot be better 
explain’d, than by what has been found to be Fad in 
boiling down the Waters at That after 
feveral Sliootings of Salts by repeating the Boilings of 
the Waters, there would, at laft, remain a Liquor of a 
deep brown Colour, which would no longer yield a 
cryftaliz’d Salt ; but if boil’d up dry, would afford a 
Salt of the fame Kind with the third Salt already men- 
tion’d: And this explaining Dr* Grew's black and dark 
Liquor, helps at the fame time to prove, in this Ar- 
ticle too, that the Sea Water affords the fame kind of 
third Salt* 
I have try’d feveral of the Experiments mention’d by 
the Dodor, by which hediftinguiflies his Sait from other 
Salts. Such as not aflFeding the Colour of Syrup of 
Violets*, curdling of Milk, when boil’d , in jthe Figure 
of its Cryftals j in its eafy Dilfolution in the famie 
Quantity of Water j in its coagulating with tlie OL 
Tartar, per D, L* in its Calcination, and in the Bitter- 
nefs of its Tafte, as well before as after Calcination, 
and find this Salt, thus feparated from the Sea 
Water, anfwer to all the Tryals. Some few Experi- 
ments, that the Dodor has not taken Notice of, I (hall 
here fubjoin, and then leave the Whole to the Opini- 
on of better Judges j Whether there be any fpecifical 
Difference between thefe two Salts > 
In order to have a Standard for thefe Experiments* 
I purpofely got my Friend, Mr. Hyet^ Apothecary at 
Epfam (whofe Fidelity 1 could depend on) to boil me 
down fome of their Waters, which he did from the 
Well 
