i 4 
. AnH 
Sac TEAS oe tr OR 
OF SEA-WATER. 217 
riate of soda commenced, the liquor was poured off at intervals 
. from the salt deposited, and farther evaporated. This was con- 
tinued as long as it appeared to afford no other salt on cool- 
ing than muriate of soda. The latter products of this salt were 
less pure than the first, being deliquescent on exposure to a 
dry atmosphere ; they were therefore redissolved in water ; by 
evaporation, the greater part was obtained crystallized, in a pu- 
rer state, and was added to the other; and the small portion 
of residual liquor was added to the residual liquor of the eva- 
porated -sea-water. 
B. By farther evaporation, this liquor afforded crystals in 
slender prisms, which were permanent in the air, and which 
were found to be sulphate of magnesia; by repeated evapora- 
tions, successive crystallizations of this kind were produced, 
(small portions of muriate of soda being also obtained, which, 
after being washed, were added to the salt A) ; the products of 
the first crystallizations were nearly pure ; those of the latter 
crystallizations were less distinct in form, and were in part de- 
liquescent. 
C. The. portion of liquor still remaining was evaporated, 
until, on cooling, it formed a congeries bre slender prisms, 
which, exposed to the air, deliquesced, and soon passed to a 
state of perfect solution, a proof of their bens principally mu- 
riate of magnesia. 
The products thus obtained, consisted, first, of muriate of so- 
da A; secondly, of sulphate of magnesia B; and, thirdly, of 
muriate of magnesia C. These, however, could not be suppo- 
sed to be pure, and they were, therefore, submitted to farther 
examination. 
D. The muriate of soda A, gave indications of the intermix- 
ture of magnesian salts; the solution of a minute portion of 
it in distilled water becoming turbid on the addition of carbo- 
Vox. VIII. P. I. Ee nate 
