cf Sea Water , &c. 49 
part of it, the fame turbid appearance took place 
as formerly. 
EXPERIMENT XII. 
On the addition of another drachm of lime, the 
water, when filtered, no longer became turbid, 
on the mixture of lime water to it; but it did not 
yet exhibit any figns of being itfelf a lime water. 
But, 
EXPERIMENT XIII. 
When I added another drachm of lime, a 
lirne water was formed. For the water now be¬ 
came very turbid, on blowing air into it from 
the lungs. 
Thefe experiments, therefore, not only prove 
that fea water may be preferved for the purpofes 
of bathing, by means of quicklime, without 
forming a lime water, but they point out the 
rationale of this phenomenon ; and alfo inftrudt 
os what portion of lime may be ufed, without a 
lime water being produced. 
It appears that quicklime, diflblved in water, 
precipitates the magnefian earth from the marine 
acid, with which it is united in the fea water, 
and, uniting with that acid, is retained in the 
water, under the form of a marine felenite. 
What the water lofes, therefore, of one fait, it 
gains of another. Ac the fame time, the 
magnefia, being precipitated by a caujiic cal¬ 
careous earth, falls in a ftate fimilar to that: 
Vol. I. E to 
