1890.] l^J [Ryder. 



as a "device " intended to prevent parthenogenesis, as supposed by Bal- 

 four, nor is it established that one of them is extruded "ovogenetic" 

 plasma, while the other is conveniently extruded to save Weismann's an- 

 cestral germ plasma from molecular disintegration ! 



35. The divergence of type from the oosperm was determined by varia- 

 tions in the surrounding conditions, the effects of which could not be 

 reflected upon the germinal matter set aside through the continuous action 

 of cumulative integration, resulting in continuous growth, except through 

 the action of the concurrent metabolism so affected. Metabolism under 

 diverse conditions was therefore the only source through which the idio- 

 plasms of species could be developed, through which the continuity of 

 the phenomena of inheritance is maintained. 



36. The principle of continuous growth through cumulative integration, 

 its rhythmical interruption through the "setting aside " and dehiscence of 

 the useless sexual elements, the evolution of a cytoplasmic field, the direct 

 adaptation to their surroundings of colonial aggregates of cells resulting 

 from the coherent segmentation of masses of plasma resulting from recip- 

 rocal integration, the necessarily cumulative superimposition of adapta- 

 tions upon one another, have been, in the main, the materials upon which 

 natural selection was dependent in order to become operative in biological 

 evolution. 



37. The view that the female is preponderatingly "anabolic" and the 

 male " katabolic," as held by Geddes and Thomson, cannot be sustained on 

 the basis fact, since it is readily demonstrated that the male element rep- 

 resents a higher product of constructive metabolism than the female. 



38. The most important result of the evolution of sexuality is the phy- 

 siological process of nuclear substitution through reciprocal integration or 

 " fertilization," thus blending and superposing matter and energy from 

 two sources and causing the latter to be potentially stored. Hunger has 

 brought about the material overflow, the divergence of the sexual ele- 

 ments from a common basis has ended in the production of countless 

 adaptive modifications and the evolution of "species," while the accessory 

 devices favorable to conjugation which have been slowly and adaptively 

 evolved have led to a gradually intensified expression of passion and love, 

 which have become important motive forces in the drama of evolution at 

 large. 



