( 90S ) 
in our Glafles, or come over the Helm, than Water 
does. This I find juftified in our Volatile Salt of Amber 
erroneoufly fo call'd, for it does not come up to our 
ftandard of Volatility, and is really no Volatile Salt, as 
will be made appear : If you take this fuppofed Volatile 
Salt and Diftil it in a Retort, or Head* and Body, with 
common Water, the Water will afcend in fuch a degree 
of Fire where the Salt will not, for you muft increafe 
your Fire confiderably to make it rife after the Water 
is gone, and has left the dry Salt at the bottom. This 
made me enquire farther into the properties of this Salt, 
which did not at all Correfpond with Volatile Salts (for 
all true Volatile Salts are Alkalies) hut 0n the contrary 
would ferment with them, an|i quite d^ftroy the pro- 
perty of true Volatile Salts, by bringing them to a dull 
infipid Salt, which fome call $al Neutrum • and alio 
by fixing their Volatile Nature, nbtrerily in putting them 
by the ftandard of Volatility, but alfo does quite deftroy 
their fpiritous and ftimulating fmell, by vertue of which, 
they have been always defervedly efteem'd fuch excel- 
lent Cephalick Medicines. Therefore examining this 
Salt yet a little farther, you will plainly prove it to be 
m Acid, that Corrodes Iron, turns Syrup of July- 
flowers Green, deftroys the Tin&ure of Lignum Ne- 
phritktm^ and does not ferment with common Acids ; 
fo that it plainly belongs to the Tribe of Acids, and 
fliould befbruck out of the Catalogue of Volatile Salts j 
and perhaps out of the number of Specific Cephalicks, 
and rather be degraded amongft the Diureticks, and 
even in that rank to have but an inferior ftation ; for it 
feems to me to be but a dull Medicine, and more Va- 
luable for its Price than great Vertue, efpecially if quite 
diverted of all its Oyl, in which the great Cephalic and 
Cordial Vertue muft needs be own'd to confift. 
