THE STRUCTURE OF SKIN 19 SLIDE ][8 iReconstruction of two hair follicles from the human skin. The one on the left is a growing follicle, the one on the right is quiescent. The growing follicle is dilated at its base, forming the bulb which encloses the derreal papilla. The arrow indicates the pore at the base of the follicle through which the derreal papilla is continuous with the connective tissue sheath. The quiescent follicle has no bulb and the dilation represents the epithelial sac around the club hair. A cord of cells at the base of the epithelial sac is in contact with the free derreal papilla. The arrectores pilorum muscles are attached to the bulge of the outer sheath below the sebaceous glands.

20 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS It is of interest that in females the hair on the scalp grows faster than that of males, but the reverse is true with axillary hair. The eyebrows, on the other hand, grow at the same rate in both sexes. When hair ceases SLIDE 19 Reconstruction of an axillary apocrine gland to show its relative size, the extent to which it is coiled, the anastomosis of the coils, and its relation to a hair follicle. Clefts appear here and there in the tubule adjacent coils seem to have fused together and some coils terminate in blind sacs. The transition between the secretory tubule and the duct occurs at the arrow. The duct opens into the pilosebaceous canal just above the grape-like cluster of sebaceous glands.