43 2 GENERATION. SECT. XXXIX. 10. 3. 



tencies ; and another fet of glands which fecrete the molecules 

 with formative propenfities ; and that thefe primary particles 

 are received and mingled together in a lefs extenfive refervoir ; 

 as an univerfal exiftence of procreative glands, as in the long 

 caudexes of vegetable buds, might have been inconvenient to 

 locomotive animals. Thefe therefore feem to conftitute a link 

 of the chain of nature between the lateral production of buds, 

 and the fexual hermaphrodites, which are next to be confidered. 



3. The fexual mode of propagation may be divided firft into 

 hermaphrodite or reciprocal fexual generation, as in the flowers 

 of moft vegetables, and in fome large infects, as in dew-worms 

 and {hell fnails, and probably in many fmailer ones. Secondly 

 into the fimpler fexual generation, which occurs in the larger 

 animals. 



The fexual modes of generation may alfo be divided into the 

 feminal or oviparous modes, as the feeds of plants, the fpawn 

 of fifh, and of infects, and the eggs of birds ; and fecondly into 

 the viviparous modes, as the fummit- bulbs of fome vegetables, 

 as of polygonum viviparum, magical onions, and the cloves of 

 garlic ; as thefe fummit-bulbs fucceed the fexual congrefs of the 

 male and female organs of flowers ; and are not buds, as their 

 roots or caudexes do not pafs down the ftem of the plant into 

 the ground ; and are therefore a fexual viviparous progeny of 

 vegetables : but the principal viviparous fexual productions are 

 thofe of quadrupeds and of mankind. 



Next to the internal folitary mode of propagation nature feems 

 to have produced the hermaphrodite fyltem of reproduction, as 

 in molt flowers ; and in fnails and dew-worms ; in thefe the 

 mafculine and feminine organs are generally external and totally 

 feparated from each other, and confill of glands, which fecrete 

 the fibrils with formative appetencies, and the molecules with 

 formative propenfities from the fame mafs of biood. 



Hence in vegetable productions the trees from feed, as apple 

 trees, fometimes exactly refemble the parent tree, like the buds 

 and bulbs, which are produced without fexual intercourfe ; at 

 other times they do not exactly refemble the parent tree, which 

 feems to be owing to the anther-dud fometimes of the fame 

 flower, or fometimes of other flowers in its vicinity, caufing the 

 impregnation of the Itigma, But in hermaphrodite infects, as 

 the (hell-fnail, and dew-worm, I have frequently obferved, that 

 they impregnate each other reciprocally, though it is attended 

 with much danger and inconvenience to them ; and I thence 

 conclude, that they have not the power to impregnate them- 

 felves by the conjunction of their own organs of reproduction, 

 fmce if that had happened, the progeny would probably, like the 



buds 



