The Hair and Hair-Follicle.
Reading edition
Fig. 5.
A, shaft of the hair; B, root of the hair; C, cuticle of the hair; D, medullary substance of the hair.
E, external layer of the hair-follicle; F, middle layer of the hair-follicle; G, internal layer of the hair-follicle; H, papilla of the hair; I, external root-sheath; J, outer layer of the internal root-sheath; K, internal layer of the internal root-sheath.
(After Duhring.)