362 INTERNAL SECRETIONS 



growth of the penis and seminal vesicles was not inhibited 

 by the engrafted ovary. Moore and Fisher were evidently 

 mistaken when writing that Steinach asserted that the ovarian 

 graft will inhibit certain male sex characters in hermaphrodites. 

 Steinach's statement is just the opposite of this. The fact that 

 male characters are not inhibited by the ovary engrafted 

 simultaneously with a testicle into a male animal, was explained 

 by Steinach as due to the antagonism of the male and female 

 sex glands continuing to exist to a certain degree also after 



A / .D 



B 



^ov. 



-ir' ^- ? 



<??* 



Fig. 128.- — Same as Fig. 127. Drawn from nature. 



successful implantation. If this is true, one can understand 

 why full inhibition of the hormonic action of the successfully 

 engrafted gland occurs, as possibly in the above-related experi- 

 ments of Moore, and certainly in some experiments of Sand, and 

 of our own with Krause and Voss, all evidently depending upon 

 the quantities and the condition of the respective heterosexual 

 tissues simultaneously at work. On the other hand, in the experi- 

 ments which we have performed with Voss engrafting ovaries 

 into the kidney of male guinea pigs with testicular fragments 

 only, we had the impression that there was a temporary in- 

 complete inhibition of development of male sex characters at 

 the time when the ovarian hormonic activity had attained its 



