60 OF THE PRINCIPAL WORMS. 



even believed that lie saw a small lumbrico'ides 

 come forth from the body of the female already 

 dead. (230) 



Tijson, VaUisneri, Van-Swieten, Van-den- 

 Bosch, Goeze, and several other naturalists of mer- 

 it, have proved that this opinion was without foun- 

 dation, and they have demonstrated that the visce- 

 ra, and particularly the very slender spermatic ves- 

 sels, having passed out by some accident from the 

 belly of the female lumbrico'ides, and turned in 

 form of an arch, in consequence of the natural elas- 

 ticity of these parts, have been erroneously taken 

 for fetuses of the same species. 



