In recent years extensive experimental studies have been carried out in an attempt to delimit the functions of the pituitary body. A bewildering array of data has been accumulated; this tiny gland has been reported to be intimately related to many of the phases of body metabolism and to nearly every other endocrine gland in the body. An attempt to review fully each of the many phases of investigation which have been carried out would result only in confusion, both for the reader and for the reviewers. Consequently, we shall mention only the recent work on the more clearly established functions of the pituitary gland which may be of clinical significance.
The large number of separate hormones postulated as being elaborated by the pituitary, particularly its anterior lobe, has for some time aroused skepticism among the investigators in this field. Indeed, it does seem almost incredible that an organ the