THE VASCULAEIZATION OF THE HUMAN TESTIS. 



EBEN CLAYTON HILL, 

 From the Anatomical Lahoratory of the Johns Hopkins University. 



With 9 Figures. 



The literature of investigations on the vascularization of the testis 

 is very meagre, the absence of recent studies of the blood supply of 

 the testis being evident in studying text books on anatomy. The 

 descriptions in these books are taken from Arnold/ who in 1847 

 published the first serious attempt at a solution of the blood supply 

 to this gland. 



Shortly after Arnold's publication Huschke and Kolliker added 

 to a small degree to his description, but practically all anatomical 

 text books and atlases reproduce the original Arnold illustrations 

 and pi'esent his original description. 



The cause of this is manifest and can be readily assigned to the 

 necessity of awaiting the invention of the newer, simpler and more 

 perfect methods of injection which have recently been furnished. 

 Arnold had at his disposal only the most difficult means for injections 

 and it is surprising that he was able to carry his studies as far as he 

 did. He was aided only slightly by these injections, and like 

 von Baer before the days of the microtome, had to depend prin- 

 cipally upon careful dissections. He succeeded, however, in trac- 

 ing the course of the spermatic artery and its branches through the 

 cord to the testis. 



In 1904, under the guidance and at the suggestion of Professor 

 Mall, I undertook an investigation of the vascularization of the 

 testis of the pig. This study was begun with the idea that a 

 knowledge of the blood supply of the male sex gland of this mammal 



'Arnold. Handbuch der Anatomie des Menschen, 1847. Surgeon-General's 

 Library, Washington, D. C. The original article could not be located. 



TiiK American .Toirxai, of Anatomy. — Vol. IX. No. 4. 



