z^2 VARIETIESINTHE 



they arrive at maturity, a fiiTure, or^feveral little 

 holes, appear at their extremities, through which 

 the feminal fluid efcapes, and falls into the ute- 

 rus. Thefe glandulous bodies are new produc- 

 tions, which always precede generation, and 

 without which it could not be effedled. 



Males undergo a fimilar change before they 

 are fit for the purpofes of generating. In the 

 oviparous animals, the feminal refervoirs are 

 filled, and fometimes the refervoirs themfelves 

 are annually renewed. The milts of fome fifhes, 

 and particularly of the calmar, are renewed every 

 year. The tefticles of birds, immediately be- 

 fore the feafoR of their amours, fwell to an e- 

 iiormous degree. The tefticles of the males of 

 viviparous animals, efpecialiy of thofe which have 

 feafons, likewife fwell confiderably ; and, in o-g- 

 neral, the genitals of every fpecies" fuffer an e- 

 redion, which, though it be external and cafu- 

 al, may be regarded as a new produdion that 

 neccfTarily pj-ecedes the faculty of generating. 



I'hus in all animals, whether male or female, 

 generation is always preceded by new produc- 

 tions; and, when there is properly no new pro- 

 dudions, fome of the parts fwell and extend to 

 a remarkable degree. In fome animals, not on- 

 ly a new produdion appears, but their whole 

 bodies are renewed, before generation can be 

 effeded; as happens in the furprifing metamor- 

 phofis of infeds, which fcems to be intended 

 for ncy other purpofc than to enable thefe ani-^ 



mais 



