ON THE POSTERIOR GLANDULATURE 107 



secretory glandular organism ; but the gland (coccygeal) is 

 not necessarily closed, and we are satisfied that on close 

 scrutiny it will uniformly be found to empty itself by 

 means of a series of what are anatomically called "modified 



FIG. 38. POSTERIOR VIEW OF THE MEDULLA OBLONGATA AND OF THE 

 SPINAL CORD WITH ITS COVERINGS AND THE ROOTS OF THE NERVES. 

 (Sappey.) \. 



The theca or dura-matral sheath has been opened by a median incision along the 

 whole length, and is stretched out to each side. On the left side, in the upper 

 and middle parts (A and B), the posterior roots of the nerves have been removed 

 so as to expose the ligamentum denticulatum, 9, and the anterior roots, 13 ; and 

 along the right side the posterior roots, 10, are shown arising from the postero- 

 lateral groove, and passing out through the dura mater. The roman numbers 

 indicate the different nerves in the cervical, dorsal, lumbar, and sacral regions 

 respectively; n, posterior median fissure; 12, ganglia on the posterior roots; 

 14, the united nerve beyond the ganglion ; 15, tapering lower end of the spinal 

 cord; 16, filum terminate ; 17, cauda equina. 



sweat glands," as described by some anatomists, on the 

 margin of the anus, and we think by a series of lymph 

 exits into the interior of the anal ending of the rectum. 



The coccygeal glomerulus, or gland, may thus be regarded 

 to some extent as bearing a resemblance in structure and 



