PLATE 2 



EXPLANATION OF FIGI RE 



2 Tip of follicle showing invaginated skin layers; a, hair shaft; b. cavernous 

 sinus filled with trabeculae and clotted blood; c, dermal sheath; d, inner layer of 

 dermal sheath; e. glassj^ layer; /, outer root sheath; g, inner root sheath; h, in- 

 vaginated outer root sheath — this forms the medulla of the hair shaft; i, papilla. 

 X 100. 



30 



