DISEASES OF THE SKIN. 



716 



Its symptovrts 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 tlie inside 

 t)f the thighs, under the abdomen, &c., the red points are very 

 apparent; and in consequence of the continual itchin"' and 

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



Fio. 136 — Sarcoi.tes auis, — (Geulach.) Fio. 137=- — Sarcoptes canis. — (Gerlach.) 



Mr Fli^ming is quite correct in stating that these red points are 

 due to the presc^nce of the parasite, although " red mange " was 

 generally suppoj^^d to be an eczematous disease. I liave satis- 

 fied hiyself 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 maiige 

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

 hence mangy dogs are subject to tiipeworm — Toenia cucumerinus 

 — -from swallowing the man^'e parasites, in the body of which is 

 looped tlie genn of what becomes developed into the mature 

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

 dj\ms, as a rule, fall a prey to the tapeworm when a few weeks 

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

 , mange before the birth of her young. 



