424 GENERATION. SECT. XXXIX. 8. 10, 



radicles or abforbent veflels at the other end ; and fome of them, 

 as in the central buds, which terminate the branches, finally 

 form the fexual organs of reproduction, which conftitute the 

 flower ; all which are fecondary parts of the new embryon or 

 fetus, as (hewn in number 9. 4. of this fetlion. 



That new organizations of the growing fyftem acquire new 

 appetencies appears from the produftion of the paflion for gen- 

 eration, as foon as the adapted organs are complete, and alfo 

 from the variation of the palate, or defire for particular kinds 

 of food, as we advance in life, as from milk to flefh ; thus as a 

 popular allufion, not as a philofophical analogy, we may again 

 be allowed to apply to the combinations of chemifhy. Where 

 two different kinds of particles unite, as acids and alkalis, a 

 third Something is produced, which poflefles attractions diflimi- 

 lar to thofe of either of them. 



And that new organizations form new molecules, appears 

 from the fecretions of the feminal and uterine glands, when 

 they have acquired their maturity ; and from the peloral ones 

 of laftefcent females. 



10, In the lateral propagation of vegetable buds, as the fu- 

 perfluous fibrils or molecules, which were fabricated in the 

 blood, or detached from living organs, and poflefs nutritive or 

 formative appetencies and propenfities; and which were more 

 abundant, than were required for the nutrition of the parent 

 vegetable bud, when it had obtained its full growth, were fe- 

 creted by innumerable glands on the various parts of its furface 

 beneath the general cuticle of the tree, and there embracing and 

 coalefcing, form a new embryon caudex, which gradually pro- 

 duces a new plumula and radicles. And as the different parts 

 of the new caudex of a compound tree refemble the parts of 

 the parent caudex, to which it adheres, this important circum- 

 ftance is {hewn beyond all doubt, that different fibrils or mole- 

 cules were detached from different parts of the parent caudex 

 to form the filial one. 



So in the fexual propagation of vegetables the fuperfluous liv- 

 ing fibrils or molecules detached from various part? of the fyf- 

 tem, and floating in the blood, appear to be fecreted from it by 

 two kinds of glands only, thofe which conftitute the anthers, 

 and thofe which conititute the pericarp of flowers. By the for- 

 mer I fuppofe the fibrils with formative appetencies and with 

 nutritive appetencies to be fecreted ; and by the latter the mole- 

 cules with formative and with nutritive propenfities. Atter- 

 wards, that thefe fibrils with formative and nutritive appeten- 

 cies become mixed in the pericarp of the flower with the cor- 

 refpondent molecules with formative and nutritive propenfities, 



and 



