218 The Management and Diseases of the Dog. 
LICE. 
These insects, though not giving rise to the same amount 
of irritability as the former, are, nevertheless, troublesome, 
and perhaps more annoying from the fact that they are 
usually an indication of uncleanliness. They are generally 
found in greater abundance about the back and posterior 
parts. They are hatched from eggs or nits attached to 
the hair. The dog-louse produces no irritation on the 
human skin. 
Treatment.—The white precipitate powder, brushed into 
the coat, or the ointment rubbed in the skin, and removed 
in the course of five or six hours, forms the most effectual 
treatment for their destruction and removal. 
TICKS. 
The dog-tick (Lrodes ricinus) is uncommon compared 
with the two preceding parasites. The creature causes 
considerable irritation to its host, and, from feeding on the 
blood by suction, gives rise, where they exist in any num- 
ber, to debility. 
- Treatment.—Forcible removal, and dressing with mer- 
curial preparations, 
