ORGANS OF SPECIAL SENSE. 373 



outer or dermic layer, and presents at the bottom a vascular 

 papilla, on which the hair rests, and from which it grows. 



Shaft, consists of a pith or medulla in the centre, sur- 

 rounded by a fibrous part containing pigment, and covered with 

 a layer of scaly epithelium. 



Point, contains the two latter elements, but has no medulla. 



SEBACEOUS GLANDS are minute, glandular bodies, situated in 

 the substance of the corium, and each opening by a single duct 

 into a hair-follicle, or upon the surface of the skin. They are 

 most abundant where hairs are found. The Meibomian glands 

 in the eyelids are the largest. 



SUDORIFEROUS or SWEAT GLANDS are minute, reddish, 

 glandular bodies, situated usually in the subcutaneous connective 

 tissue, each consisting of a single convoluted tube. Each gland 

 opens on the surface of the skin. 



