[63 0 ] 
the flrift Senfe of the Word, brought forth from 
i ants; then by a flrange Viciflkude again become 
i lants ot another Kind, tliefe again Animals of an- 
other, and thus on for a Series, further than the 
utmoft Power of GlaiTcs can carry the nroft inqui- 
htive Obferver. 1 
§ i6. It has generally been thought by Natu- 
ralifts, that microlcopical Animalcules were vene- 
rated from Eggs tranlported through the Air, or de- 
pofited by a Parent Fly, invifible to the naked Eye 
or even that aflifted with Microfcopes. Yet is it 
ft range that no Naturalift lhould yet have feen them, 
it they are really fo numerous, when their fuppofed 
1 rogeny is lo various, and themfelves mud be 
thought to be fo frequently gliding over the Surface of 
allftagnant Waters. By what extraordinary Turn is it 
bi ought about, might a Naturalift obferve, that fuch 
furp riling Revolutions lhould happen in thefe little 
Oceans, as a total Dilappcarance of one Species fol- 
lowed by the almoft immediate Succellion of 
another j and that in a manner io fudden and un- 
expected, that I know not whither they are retired 
or what new Forms they may have afliimed. If they 
ciic, does a whole Race peri fh together, without any 
known Caufe? Or if they have taken any new 
Form, how is it that I fee none of them altering, juft 
altci d, oi expanding their little Wings upon thefe 
Waters, wherein I lately faw fo many Millions 
in an aquatic State? If it is poflible for them 
to become flying Infers in a manner totally 
invifible, why do not thefe new Parents a^ain de- 
pofit their Spawn in the fame Waters, and oi ve 
a Succellion of the late Species, that has disap- 
pear'd ? 
