jjr* ANI'T.IALCULA OF INFUSIONS. 167 



eggs laid by the fcrtary ariimalcule, v/bich fuc- 

 eeeded with all the fpecies 1 examined ( i ). 



A fimilar method was purfued with vivipar- 

 ous animalcula, by taking feveral young, one by 

 one, from the parent before being fully develop- 

 ed, and ifolating thein to prevent all fun^icion 

 of mutual intercourfe. Each ifolated animalcule, 

 in due timej, became parent of other two, that ii, 

 of two, fpeaking of the firft fpecies, and three, 

 fpeaking of the fecond. And thefe young after« 

 wards had defcendants (2). 



Thefe two genera of oviparous and viviparous 



animalcula are, therefore, hermaphrodites in the 



L 4 ftricteft 



(i) Some authors indeed deny the copulation of ani- 

 malcula. RofFredi fays he has been long acquainted with 

 inicrofcopic animalcula, and known the frivolity of their 

 pretended copulations : immediately afterwards, however, 

 he defcribes that of tlie eels of blighted coin. Several i;> 

 ftances arc related by Muller. The copulation of che Pa- 

 ramsecium Aurelia has continued tv/o hours, Am,u. Lifui. 

 p. 58. The Trlchoda Aurantia, Prifma, Lynccus, co- 

 pulate ; as do the Vorticella Kranata, and Craterif.'rmis, 

 p. 185. 188. 226. 278. 279. 280. He iias feen v.hat he 

 calls both a tranfverfe and longitudinal copulation of the 

 Trichoda, Ignita, and Charon, p^ 1S6. 230. — -T, 



(2) The Vorticella Nauita propagates both hy produc- 

 ing living fctufes, and by ihe divihon of its ovvn body into 

 four parts, RLuLr, p. 269. In ti/is it fornev.-hat rcfemblej! 

 other animals that produce both eggs and young, — T~ 



