Abstract
In an effort to clarify the function of the corpuscle of Stannius in Atlantic salmon ( Salmo salar), histological studies were made of specimens from Canadian fish taken at various stages in the spawning journey. The general architecture and cell types of the corpuscle changed in several ways; these were more closely related to time in fresh water than to gonadal development. An anatomical unit composed of ganglion cells, nerves, and thick-walled blood vessels was consistently noted between the corpuscle and adjacent renal tissue. The relation of these observations to the overall function of the teleostean kidney with its several mechanisms for homeostatic control of electrolytes and steroid activity is briefly discussed.
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