%66 ANIMALCULA OF INFUSIOT^S. X. 



lirultlplication by dlvifion, and is unwilling to fix 

 the eye too long on the microfcope, lliould pre- 

 fer fummer, if he does not chufe to have recourfe 

 to a ftove, which my experiments prove operates 

 equally well. 



CHAP. VIII. 



SEVERAL INFUSION ANIMALCULA ARE OVIPAROUS : 

 SOME VIVIPAROUS: AND ALL HERMAPHRODITES 

 IN THE STRICTEST SENSE. 



Xn my microfcopic refearches, I have obferved, 

 that many fpecies of animaicula become extremely 

 numerous in a very ihort time, without evincing 

 any figns of divifion. How, then, do they propa- 

 gate ? Shall we fay it is by inftantaneous divi- 

 fion, and on that account not eafily perceptible : 

 or that it is eifefted in any other manner ? Ex- 

 periment, the only method of dilTipating doubt, 

 has fhown us that this propagation was not the 

 confequence of divifion, but from eggs, and fome- 

 times minute foetufes j for I have actually found 

 many kinds of animaicula oviparous and fome vi- 

 viparous. Such an affertion is nothing unlefs 

 fupported by convincing and decifive evidence. 



The 



