PARASITES AFFECTING THE SKIN 21 
equilibrium and inco-ordination of movement. The 
ear, On examination, may present a fairly normal ap- 
pearance, but more often shows a deposit of dark- 
coloured sticky wax. 
If this is thinly smeared over a glass slide and ex- 
amined microscopically, often quite a number of para- 
sites may be seen moving across the field. 
Treatment.—This consists in first cleaning out the ear 
with cotton-wool soaked in dilute spirit. The following 
dressings are suitable for application : 
B. Creosote ut on me eas TEX, 
Ol. caryoph. .. a3 oe -. MXv. 
Ol. olive aa .. ad 3ij. 
M. Sig.: Pour a few drops into the ear r twice daily, and apply 
massage. 
Nocard advises the following : 
R Beta-naphthol eu ae -. I part 
Ether meth. .. s ea .. 3 parts. 
Ol. olive ae fe an -. 10 parts 
Friedburzgher and Fréhner recommend equal parts of 
Peruvian balsam and glycerin. 
Ear-cones, with a basis of cacao butter, and contain- 
ing zinc sulphate and ext. belladonne vir., are very 
useful. ‘ 
If nervous symptoms are marked, nerve sedatives, as 
pot. bromid., strontium bromid., or chloral hydrate, 
should be employed in addition. 
Follicular (Demodectic) Mange.—-This disease is com- 
mon in dogs and cats, especially in large towns, and has 
also been observed in cattle and pigs, but in these is 
comparatively rare. Demoder folliculorum, the causal 
parasite, is of common occurrence in the skin of man, 
but without producing symptoms. The parasite is a 
representative of the Demodecide, which, like the Sar- 
coptid, are a division of the Acarina. 
