a, The hair follicle; b, the hair root; c, the medulla; d, the hair cuticle; e, the outer root sheath; f, the inner root sheath; g, the papilla from which the hair is growing; h, a sebaceous gland; i, a sudoriferous gland.

124.Magnified View of a Papilla of the Skin, with a Touch Corpuscle.]

Then we shall have a more or less continuous column of cells growing from the tip of the finger or papilla (a hollow tube of cells gradually moving from off the surface of the finger or papilla like a cast), and similar casts are passing from off all the fingers or papillæ.