PSYCHOLOGICAL CHARACTERISTICS 115 



and thus there are wheels within wheels, although the Mental 

 effect of the hand of Time alone is visible : Repro- Factor in & 

 duction ; Reproduction with individuation ; Individua- evolution. 

 tion with reproduction ; Individuation . . . Evolution. 



The higher mental processes, then, in the human 

 subject are turned into account in the physiology of 

 reproduction in a manner apparently not exercised in 

 the lower orders of creation. 



As I have indicated, sexual selection in animals is Sexual 

 apparently dependent entirely on internal stimuli — due internal 

 to metabolic factors to be discussed directly — and on stunul1 - 

 stimuli of external origin, emanating from the senses of 

 sight, smell, hearing and touch. With regard to the 

 instincts associated with maternity in the lower animals, 

 these, also, appear to be directly referable to internal 

 stimuli evolved by the processes of natural selection in the 

 competition for survival. 



To illustrate how purely metabolic are the maternal Maternal 

 instincts, and even the functions associated with and The 8 

 maternity in animals, I may mention the case of a bitch metabolism. 

 which lived for nearly seventeen years. When young 

 she had several litters of puppies. Later in life, some 

 weeks after the cessation of each oestrum 'milk' appeared 

 in the mammae, and at the correct period she made a nest 

 for the expected young, although she had never been 

 allowed access to a dog during the period of heat. More- 

 over, Marshall 1 and others state that the migratory 

 instinct of birds is due to activity in the gonads, after a 

 period of quiescence. 



The human female, to whom the intellect is a source The intellect 

 of personal pleasure and pride, utilizes — often quite ductive* 

 unconsciously — the high state of perfection to which function s. 

 her mental processes have been evolved not only to 

 assist her in sexual selection 2 , but also in the care and 



1 Marshall, F. H. A., The Physiology of Reproduction, 1910. 



2 Modern ■ Eugenics ' have been introduced by Man in an attempt 

 to assist the unerring laws of Nature which are concerned with sexual 

 selection. This study may have been thrust into the mind of Man by 

 Nature, in order to counteract the disturbances of the law of the survival 

 of the fittest, which are produced by the humanity of mankind. 



