DIFFERENT SYSTEMS. i2i 



number of foetufes. This fa<ft confirms what 

 we obferved concerning the experiments of De 

 GraafI', and proves that they are by no means 

 exad. What he calls folhcles of the ovarium 

 arc only the glandulous bodies, the number of 

 which always exceeds that of the foetuies. In 

 the ovaria ^f a fow, two or three months old, 

 the tefticlcs were pretty large, and interfperfed 

 with veficlcs of a confiderable fize. Among the 

 veficles, the beginnings of four glandulous bo- 

 dies appeared in one tcfticle, and of feven in the 

 other. 



After thefe experiments upon fows, Valifnieri 

 repeats thofe of Malpighius upon cows, and he 

 found them to be exadly conformable to truth. 

 He indeed acknowledges, that he was never 

 able to difcover the egg which Malpighius ima- 

 gined he had feen once or twice in the interior 

 cavities of the glandulous bodies. After a fruit- 

 Icfs fcarch in the tefticles of fo many diflerent 

 females, it was natural to think that Valifnieri 

 would at leart have doubted the exigence of fuch 

 eggs. But prejudice in favour of lyftem made 

 him admit, contrary to his own experience, the 

 cxiftence of eggs, which neither he nor any o- 

 ther man ever faw, or ever will fee. 



It is, perhaps, impoffible to make a greater 

 number, or more exad: experiments, than thofe 

 of Valifnieri. Among other animals, he ex- 

 amined the ewe, and found, that fhe never has 

 jnore glandulous bodies in her tefticles than 



foetufes 



