432 



THE SKIN. 



growth of epidermal cells from the surface of this papilla 

 that the hair is formed. The inner wall of the follicle is 



Fig. 1 10.* 



Fig. iii.f 



* Fig. no. Medium-sized hair in its follicle, magnified 50 diameters 

 (from Kolliker). a, stem cut short; b, root ; c, knob ; d, hair cuticle ; 

 e, internal, and /, external root- sheath; g, h, dermic coat of follicle; 

 ?', papilla ; k, k, ducts of sebaceous glands ; /, corium ; m, mucous layer 

 of epidermis; o, upper limit of internal root- sheath (from Kolliker). 



f Fig. in. Magnified view of the root of a hair (after Kohlrausch). 

 , stem or shaft of hair cut across ; b, inner, and c, outer layer of the 

 epidermal lining of the hair-follicle, called also the inner and outer root- 

 sheath ; d, dermal or external coat of the hair- follicle, shown in part, 



