46 Mr. Henry on the Prejervation 
the lime adted, and the reafon why no lime water 
was produced. But, on adding lime water alfo to 
fome of the fea water which had been preferved 
by the lime, a cloudinefs and precipitation 
refembling the former took place, and ftaggered 
us in our theory j for we imagined, that the 
portion of quicklime had been fufficient to have 
precipitated the whole of the magnefia which the 
water might have contained, and we now fuf- 
pedted, that the folution of the lime, was, there¬ 
fore, probably prevented by the fea fait. 
Other avocations prevented my purfuing the 
inquiry at that time, but I have fince relumed 
it, and been able to elucidate the whole matter. 
EXPERIMENT V. 
Into a ftrong folution of the common Chefhire 
fait, fome lime water was poured. The mixture 
became turbid, and a white earth was feparated^ 
which did not fink to the bottom of the glafs, but 
was fufpended, partly, on the furface, and, partly, 
in the midft of the liquor. 
But from whence did this precipitate proceed ? 
Was it the lime thrown down by the fait; or did 
the lime feparate fomething from the common 
fait? 
EXPERIMENT VI. 
To a portion of the fame folution, inftead of 
lime water, fome drops of a folution of fofiil 
alkali 
