410 JOHN LEWIS BEEMER 



growth of the cortex of the suprarenal gland. Pieces of this latter 

 are common along the course of the spermatic artery. 



4. The mesonephric tubules in man join the duct on either its 

 dorsal or ventral side. The dorsal ones run dorsally, so that the 

 rete tubules join their glomeruli; the ventral ones take a more 

 ventral course, so that the tubules before reaching the glomeruli 

 pass by the mediastinum testis, and are joined by the rete tubules. 

 The glomerular ends of the ventral tubules form the appendages 

 of the rete testis, (Roth and Poirier), and the upper ductulus 

 aberrans. 



5. The rete tubules in man develop opposite the first eight or 

 nine mesonephric glomeruli, but are connected with many more 

 in their course downward in the mediastinum. The first one or 

 two may remain unattached, forming the appendix epididymis, 

 their tubules making the lower paradidymis (Toldt). Tubules 

 below the junction of the rete form the lower ductulus aberrans 

 and the organ of Giraldes. 



6. The small percentage of cases in which these appendages are 

 found is due to the fact that the tubules involved frequently lie 

 inconspicuously among the convolutions of the normal ducts. 



7. The epithelium lining these appendages depends upon their 

 final connections, not upon their origin. 



LITERATURE CITED 



Hill, E. C. 1909 The vascularization of the human testis, Am. Jour. Anat. 

 vol. 9, no. 4. 



1907 On the gross development and vascularization of the testis, Am. 

 Jour. Anat. vol. 6, no. 4, 



Allen, B. M. 1904 The embryonic development of the ovary and testis in mam- 

 mals. Am. Jour. Anat., vol 3, no. 2, 



MacCallum, J. B. 1902 Notes on the Wolffian body of higher mammals, Am. 

 Jour. Anat., vol 1, no. 3,. 



