[ 266 ] 
Second Letter, Auguft 9, 175 0. 
T HE paradox, which I formerly mention’d,, con- 
cerning calx vive, which no body would at 
field; believe, I have demonftrated by repeated experi- 
ments, by which it appears, that the hone calx vtve 
may afford more than lix hundred times its own 
weight of good lime-water ; for from half a drachm 
of quick-lime I had forty ounces of lime-water 3 from 
one pound of quick-lime yoo pounds of lime-water ; 
and the lime is not yet exhaufted, the water being as 
good now as at firft, by every experiment that I know. 
I poured fome of it cold (very lately) on fome fmall 
calculi , in a drinking-glafs, and in one night’s time 
fuch phenomena appeared, as notably explained, as 
well as confirmed, the ufe of lime-water in the done* 
I found alfo, that quick-lime kept dry, in the open 
air, 14 months, communicated nothing to water y 
tho’ long infufed in it : that lime-water, boiled 
down to a fourth part, is not weaken’d, neither fenfibly 
Wronger ; yet yields a very little of fmall (lender 
prifmatic cryflals. I am, Sir, 
Your obliged mod humble fervant, 
Charles Alfton, 
XL. 
