•Chap. XXVII. OF PANGENESIS. 383 



must have been thrown off from each cell or part. But, as we 

 sometimes see half an anther or a small portion of a filament 

 becoming petaliform, or parts or mere stripes of the calyx 

 assuming the colour and texture of the corolla, it is probable 

 that with petals the gemmules of each cell are not aggregated 

 together into a compound gemmule, but are freely and separately 

 diffused. 



Having now endeavoured to show that the several foregoing 

 assumptions are to a certain extent supported by analogous 

 facts, and having discussed some of the most doubtful points, 

 we will consider how far the hypothesis brings under a single 

 point of view the various cases ennumerated in the First Part. 

 All the forms of reproduction graduate into each other and 

 agree in their product ; for it is impossible to distinguish between 

 organisms produced from buds, from self-division, or from 

 fertilised germs; such organisms are liable to variations of the 

 same nature and to reversion of character; and as we now see 

 that all the forms of reproduction depend on the aggregation 

 of gemmules derived from the whole body, we can understand 

 this general agreement. It is satisfactory to find that sexual 

 and asexual generation, by both of which widely different pro- 

 cesses the same living creature is habitually produced are 

 fundamentally the same. Parthenogenesis is no longer 'won- 

 derful; m fact, the wonder is that it should not oftener occur 

 We see that the reproductive organs do not actually create 

 the sexual elements ; they merely determine or permit the 

 aggregation of the gemmules in a special manner. These 

 organs together with their accessory parts, have, however, 

 high functions to perform; they give to both elements a special 

 affinity for each other, independently of the contents of the 



ZLT i + - "'I 1 *' aS iS Sh ° Wn in the case ^ plants by 

 the mutual reaction of the stigma and pollen-grains; they adapt 



foT mutu° 1 : Wnt Vr iDdependent tQ ^y *^> aS 

 sleTmes wonT^ " C0 ^™s for these purpose are 



ZcZZZt t^ C °? leX ' " With the ^matojhores of 



tet^Sft , malG GlepW S ° metimes P~» ^tri- 

 butes which if observed m an independent animal, would be put 



down to mstmct guided by sense-organs, as when'the sperma^ 



