This attempt at a brief review of the contributions of the past year to our knowledge of the metabolic functions of the endocrine glands must of necessity be selective rather than all-inclusive. This is not only because of the number of papers which have appeared, but also because many of the findings cannot yet be related to the pre-existing knowledge. For these reasons it has seemed desirable to limit the present discussion to the most pertinent literature concerning the influence of the pancreas, the adrenal cortex, the thyroid and the anterior hypophysis on the metabolism of carbo hydrates, fats, and proteins respectively.Since it is possible to make only the briefest mention of the related work which appeared before the period under considera tion, the reader is referred to certain review articles published during this time. Van Dyke's second volume on the pituitary gland (144) covers the international literature on the subject from 1935 to 1938. Collip (28) has discussed the significance of the various active fractions of anterior pituitary extracts. The influence of the pituitary gland on carbohydrate metabolism has been re viewed by Young (154) , and of the adrenal cortex by Long and associates (83). Raab (110) has considered the relation of the hor mones to fat metabolism.It is understood that the interpretation of new observations will often depend upon one's previous conception of the funda mentals of the subject. The writer has recently summarized some of his views on carbohydrate metabolism (126, 127). THE PANCREAS A more complete understanding of the influence of other hor mones on carbohydrate metabolism still awaits final agreement as 1 Th e help of Dr. R. Levine in the collection of the material for t " his review is gratefully acknowledged.543 Annu. Rev. Physiol. 1941.3:543-572. Downloaded from www.annualreviews.org Access provided by New York University -Bobst Library on 02/08/15. For personal use only. Quick links to online content Further ANNUAL REVIEWS