METABOLISM AND THE PARS GLANDULARIS 



that the administration of thyroid caused adrenal growth in 

 thyroidectomized rats but not in hypophysectomized rats. 



Fig. 50. — Photomicrographs of adrenal glands of the male rats shown in Figure 

 II. X24. Top, an adrenal gland of the hypophysectomized rat; weight of both 

 adrenals, 9.1 mg. ; note that the atrophic changes are almost entirely confined to 

 the cortex. Bottom, an adrenal gland of the normal rat; weight of both adrenals, 

 48.5 mg. x'Mso see Figure 51. 



The hypophysectomized rat does not survive adrenalectomy 

 as well as the normal rat (Shumacker and Firor, 1934). Com- 

 pensatory adrenal hypertrophy does not occur after the re- 



[281] 



