[ 828 ] 
ufe here), will not preferve water from putrefaction 
though ftone-lime, as Dr. Alfton has happily difco 
vered, does preferve water in a great meafure from 
the great degrees of putrefaction it is fubjeCt to, and 
therefore may be very ferviceable at fea. 
Being informed, by one, who had been in the Eaft- 
Indies, that native mineral fulphur had been found 
to keep water fweet there in earthen-jars, at land, 
and alfo at fea, (but I know not whether in jars, pro- 
bably in calks), 
April 2, I put into a kilderkin, or eighteen gal- 
lons of pure pond-water, a pound of native mineral 
fulphur, in feven lumps. 
April 26, Sweet. 
May 3, Began manifeftly to ftink. 
May 7, Stunk much, and was poured away. 
May 8, The kilderkin being fcalded, and made 
fweet, it was filled again with the fame pond-water, 
and fix pounds of native mineral fulphur put into it. 
July 27, It was fweet. 
October 17, It was difcoloured, and fomewhat in 
a fmall degree fetid. 
November 12, The fame. 
Hence native mineral fulphur may be of fervice 
to preferve water from great degrees of putrefaction 
at fea. 
Dr. Alfton having written me word, that he found 
filh would continue fweet in lime-water for feven 
and more weeks, 
April 19,1 put four gudgeons into white marble 
lime-water. 
May 10, They were fweet; but on boiling one of 
them, the flefh, though fweet, was reduced to be 
foft pap. 
And 
4 • 
