CHAPTER X 



THE RELATION OF THE DUCTLESS GLANDS 

 TO ONE ANOTHER 



The function of the hormones generated by the 

 ductless glands is to coordinate the various activi- 

 ties of the body. That there should exist a close 

 relationship between any one ductless gland and 

 any other or a group of others, is what might be 

 expected, but the difficulty in proving beyond all 

 question such relationships is great. This chapter, 

 then, should be read with reserve; what is related 

 here Is meant to be suggestive and no more. But 

 this chapter, like one or two others following it, 

 will, I trust, also serve as handy summaries of 

 much that has been discussed in previous pages. 



The eminent French physiologist, Gley, writes: 

 "The connections between the various glands are 

 one of the fundamental facts maintained by the 

 doctrine of internal secretions, and to deny them 

 would be to deny a part of the doctrine of internal 

 secretions itself. But what I criticize is the in- 

 sufficiently demonstrated theory of reciprocal re- 

 lations." And well he may; there are no end of 



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