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DISEASES OF THE SKIN. 



Its si/mjjtoms are as follows : — Itchiness, formation of red points 

 like flea-bites, vesicles, pustules, and scabs. 



Where the skin is thinly covered with hair, as upon the inside 

 of the thighs, under the abdomen, &c., the red points are very 

 apparent; and in consequence of the continual itching and 

 scratching, the skin upon these parts becomes red and inflamed. 



Fig. 128. — Sarcoptes snis. — (Gerlach.) Fig. 129, — Sarcoptes canis. — (Gerlach.) 



Mr. Fleming is quite correct in stating that these red points are 

 due to the presence of the parasite, although " red mange " was 

 generally supposed to be an eczematous disease. I have satis- 

 fied myself that it is parasitic and contagious, and that what are 

 termed scabby mange, watery mange, and dry or red mange, are 

 one and the same disease differently manifested. The mange 

 louse of the dog is the habitat of the cysticercus cucumerinus ; 

 hence mangy dogs are subject to tapeworm — Toenia cucumerinus 

 — from swallowing the mange parasites, in the body of which is 

 looped the germ of what becomes developed into the mature 

 tapeworm in the dog's intestinal canal. Pups suckled by mangy 

 dams, as a rule, fall a prey to the tapeworm wlien a few weeks 

 old. On this account tlie dam ought to be thoroughly cured of 

 mange before the birth of her young. 



