100 



THE VERTEBRATE ANIMAL: METABOLISM 



Fig. 56. — Individuals suffering from 

 thyroid deficiency. 



The effect of thyroid treatment on the 

 cretin to the left is shown in the central 

 figure. An untreated cretin is shown at the 

 right: age 28, height 34 J inches. (Figures 

 to left and in center from Srhafpr, "The 



Endocrine Organs," copyright, 1916, by Longmans, Green and Co., reprinted by permis- 

 sion. Figure to right from Murray, "Diseases of the Thyroid Gland," copyright, 1900, 

 by H. K. Lewis and Co., reprinted by permission.) 



m.o. 



Fig. 57. — Portion of the medulla of the adrenal gland. 



cap, blood capillary which carries the adrenalin secreted by the medullary cells; m.c., 

 medullary cells. 



