SEBACEOUS FLUIDS. 



61 



The ducts are short and nearly straight, simply penetrating 

 the different layers of the skin, and are from -^ -g- to -g-^ of an 

 inch in diameter. Their openings are rounded and about -^-^ 

 of an inch in diameter. They sometimes terminate in the 

 upper part of one of the hair follicles. They present an ex- 

 ternal coat of white fibrous tissue, and are lined with several 

 layers of small, pale, nucleated epithelial cells. 



Fio. 2. 



Vertical section of the skin of the external auditory meatus. 1, 1, Epidermis ; 2, 2, Der- 

 ma ; 3. 3. Series of hair- follicles lodged in the substance of the skin ; 4, 4, Series of 

 sebaceous glands attached to these follicles ; 5. 5. Subcutaneous areolar layer ; 6, 6, Ce- 

 ruminous slands ; 7.7, Cernminous glands with the ducts divided; 8, 8, Adipose 

 vesicles. (SAPPET, Traite (Tanatcmie^ Paris, 1852, tome ii., p. 523.) 



The glandular coil is an ovoid or rounded, brownish 

 mass, of from y^ to -g^ or ^ of an inch in diameter. It 

 is simply a convoluted tube, continuous with the excretory 

 duct and terminating in a somewhat dilated, rounded ex- 

 tremity. It presents occasionally, small, lateral protrusion?. 

 The diameter of the tube is from -g^- to -3^-5- of an inch. It 

 possesses a fibrous coat with a longitudinal layer of invol- 



