THE SKIN 



265 



forms the essential body of the dermis and gives to it its 

 power of resistance. It is on account of the connective 

 tissue that the skins of animals can be converted into 

 leather by tanning. A variety of structures, including 



FIG. 121. Section of skin magnified, a, b. Epidermis, b. Pigment layer. 

 c. Papilla, d. Dermis. e. Fatty tissue. /, g, h. Sweat gland and duct. 

 i, k. Hair and follicle. /. Oil gland. 



blood and lymph vessels, oil and perspiratory glands, hair 

 follicles, and nerves, are found embedded in the connective 

 tissue (Fig. 122). These aid in different ways in the work 

 of the skin. 



On the outer surface of the dermis are numerous eleva- 



