PARASITOLOGY. 67 
Animal Intested.—The dog. 
Parts Infested; Symptoms.—The parasite burrows 
into the hair or sebaceous follicles, occluding the 
ducts and producing pustules. These pustules are 
prominent, and give the skin a rough appearance. 
The animal is usually first attacked by the parasite 
in the region of the breast, legs, axillary and facial 
regions. The skin becomes red, and hence it is 
called red mange. Considerable irritation accompa- 
nies the malady. The dog scratches and bites the 
parts, the hair falls out and the skin becomes thick- 
ened. In later stages the entire cuticular surface 
becomes affected. 
Treatment.—Successful treatment of this malady is 
difficult because of the difficulty of getting the solu- 
tion to the interior of the pustules. A mixture of 
gasoline, oil of tar and oil of cade has been used with 
more or less good results. Also 
Oleo-resin aspidii-.____-_---- 8 parts 
Creolnias 226 see ocssasioees 42 parts 
AICONOL 252220 est acco Sees 50 parts 
DEMODEX FOLLICULORUM, variety Suis. 
History.—Frequently found in America and in 
Europe. 
Animal Infested.—The pig. 
Condition Produced.—The parasites attack the cu- 
ticular surface in the axillary region and flanks; 
then the disease spreads over the entire surface of 
the body and legs. The skin becomes thickened and 
rough. The pustules push up, giving the skin a 
papillated appearance. 
Mode of Intestation.—The animal may be infested 
