116 Proceedings of the Royal Physical Society. 



coils. The outer borders were thick and convex. The 

 anterior end of each kidney was somewhat thinner than 

 its hinder end, which was the thicker and more blunted. 



There was no surrounding capsule of fat between the 

 peritoneum and the kidney substance. Each kidney was 

 divided into numerous lobules. Daudt specifies about two 

 hundred and fifty as not too high a number. The bases 

 or surface ends of these lobules were polyhedral, most of 

 them presenting five or six sides. The general appearance 

 of the surface of the kidney was that of a mosaic, but 

 as the lobules were only held together by areolar tissue, 

 they could readily be separated from each other. The 

 microscope did not reveal any unusual arrangement of 

 structure. 



A suprarenal or adrenal hody was found at the front 

 end of each kidney, but neither of these bodies adapted 

 itself to the front end of its adjoining kidney like a cowl 

 (" kapuzenartig "), as described by Daudt. They were merely 

 situated in very close proximity to their respective kidneys. 



The right suprarenal (adrenal) measured 3 cm. in length, 

 2 '6 cm. in width, and 8 mm. in thickness. In general 

 outline it was triangular. Its thickest side was in contact 

 with the front end of the kidney. A second side was placed 

 mesially in relation to the great vessels, while its third side 

 was directed antero-externally. Its dorsal and ventral sur- 

 faces were smooth. 



The left suprarenal (adrenal) was slightly (3 mm.) longer 

 than the right one, and also slightly thinner. It was some- 

 what discoid in outline, and presented the same general 

 relations as the right one, but its hinder aspect was over- 

 lapped by, and did not adapt itself to, the front end of the 

 left kidney. Each of these bodies was composed of a large 

 number of small lobules. 



It may be of interest to observe that these suprarenal 

 bodies are distinctly smaller in proportion to their respective 

 kidneys than is the case in the human subject {vide "Quain's 

 Anatomy," 10th ed.). 



In comparison with the human suprarenal bodies, those 

 of the porpoise are decidedly smaller in length and width, 



