716 



DISEASES OF THE SKIN. 



FOLLICULAR SCABIES. 



Fig. 140. — Acari folliculorum. 



Fra. 138. — Three follicles of the skin of the dog, containing entozoa. 100 diam. 



Fig. 139. — Cul-de-sac of a sebaceous follicle, containing three animalculae in 

 diffei-ent positions, and two eggs. 350 diam. 



Fig. 140. — Hair and its follicle, in which may be seen the animalculae descending 

 towards the root of the hair and cul-de-sac of the follicles. — (Grdby.) 100 diam. 



This form of mange is due to the presence of the acarus 

 demodox folliculorum. — (See Figs. 138, 139, and 140.) 



