( ) 
Having fome room left, I fhall here add that I have tried 
feveral ways ot killing the Animalcula before mentioned, 
by mixing Salts, Spirits and Acids, &c. with their Water, 
the leaft touch ot which will immediately deprive them ot 
motion and life. But I never yet fucceeded in any try?*! of 
recovering or reviving them after ihe Water was evaporat- 
ed, by the addition of frefh Water, thofome have affirmed 
they may be revived by that means even an hour after, nay 
fomebody in one of theTranfaftions fays they will recover 
after the Water is boiled. Many of thofe I have mention- 
ed burft when the Water dries, and tho fome keep their 
(hapes a little while, yet they too alter in a few minutes, 
and I cannot imagine them recoverable. 
LO NDON, Printed for Sam, Smith, and Benj. Walford, Printers to the 
Royal Society, at the Princes Arms in St Panh Church-yard. 
