Since FUSARI (1891) and DOGIEL (1894) made broad surveys on the innervation of the adrenal gland of mammals including man, the manner and extent of the innervation of the mammalian adenal gland has been subjected to many investigators. For all the results of these works, however, many questions on this subject remain unsolved, and conflicting views have been put forward particularly on the presence of a parenchyma) innervation of the cortex. Some investigators (FUSARI 1891, DOGIEL 1894, RENNER 1914, ALPERT 1931, PINES and NAROWTSCHATOWA 1931, STOHR 1935, WILLARD 1936, DENBER 1944, Kiss 1951, LEVER 1953, SARTER 1954, IWAKI 1955, and MIKHAIL 1961 maintained the presence of the nerves supplying the cortex, although their interpretations varied.On the contrary, other investigators (HOSHI 1926, KURA 1927, HOLLINSHEAD 1936, SWINYARD 1937, KENNET 1940, MACFARLAND and DAVEN-PORT 1941, EVANS 1947, SATO 1952, and WILKINS 1961