THE RELATION OF THE DUCTLESS GLANDS 155 



suria). On the other hand, addition, or rather in- 

 jection of adrenaline does the same. Hence the 

 view that the two act reciprocally. Direct proof 

 has not been forthcoming. 



(C) and sexual glands. Conflicting. It is said 

 that "in cases of sexual precocity the adrenal cor- 

 tex is much enlarged." 



Thymus (A) and thyroid. See the latter. ' 



(B) and parathyroids. Uhlenhuth, of the 

 Kockefeller Institute, is responsible for the state- 

 ment that the thymus secretes a tetany-producing 

 substance, the action of which is neutralized by the 

 parathyroids. This needs confirmation. 



(C) and sexwal glands. The removal of the thy- 

 mus in early life brings about the development of 

 the sexual glands. It does seem as if the function 

 of the thymus in early life is to retard the onset of 

 puberty. 



