■](, HYPOPHYSIS->OVARY->OVIPOSITOR II 



cells pass their product back to the brain, which in turn influ- 

 ences the effectors (the chromatophores, and perhaps also the 

 gonad). This influence on the brain is much slower and more 

 gradual than the transport in the blood. It is evident from all 

 this that the part played by the hypophysis, as "motor of se- 

 xuality" (Zondek) in the chain of reactions is an extremely 

 complicated and many-sided one, and that, owing to the 

 location of the hypophysis (as an appendix of the hypothala- 

 mus) , there is close connexion, both nervous and humoral, 

 with the periphery as well as with the central parts of the 

 body. 



