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MANUAL OF ELEMENTARY ZOOLOGY 



the burrowing habit, and the fact that the young, which are 

 born in the open, are hairy, whereas those of the 

 rabbit, born in the shelter of a burrow, are naked. 

 The hare is a native of Britain and other parts of Northern 

 Europe. The Mountain Hare is more like the rabbit in 

 the shape of its body, but has black tips to the ears and 

 turns grey or white in cold weather. 



The rabbit is a backboned animal, with all that we have 

 seen that to imply. Like that of all Vertebrata, its skin is 



Fig. 307. — A diagram of a section through the skin of a mammal. 

 Highly magnified. — From Shipley and MacBride. 



b.v., Blood vessels ; diss., connective tissue^ of dermis ; d.svi.g., duct of sweat gland ; 

 der., dermis or corium ; epid., epidermis ; h.l., stratum corneum or horny layer 

 of the same; /4r.,hair; urns., muscles by which the hair may be made to stand 

 on end; M.I., Malpighian layer \ pap., hair papilla; sb.g., sebaceous gland; 

 sw.g., sweat gland. 



General 

 Anatomy and 

 Shin. 



covered with a stratified epidermis. There are no scales, 

 but cellular outgrowths of the epidermis form 

 hairs, which are peculiar to the warm-blooded, 

 suckling animals known as Mammalia. Each 

 hair is embedded in a pit or follicle of the epi- 

 dermis, at the bottom of which it arises by the growth of the 

 epidermic cells which cover a vascular papilla. The bristles 

 of the crayfish or of hairy caterpillars, and the setae of the 

 earthworm, are not true hairs, but cuticular structures 

 secreted by the epidermis. The skin also contains sweat 

 or sudorific glands and grease or sebaceous glands which 



