80 PARASITOLOGY. 



while the older inner portion assumes a grayish 

 color. The condition is accompanied by itching; the 

 animal rubs and scratches itself. Common in U. S. 



Parts Infested. — In man it is noted in the facial 

 region and arms ; sometimes contracted by handling 

 infected pets. In horses it infests principally the 

 body, but has been observed on the extremities. In 

 cattle the facial region is a favorite location. In 

 hogs we observe the body as the most usual part 

 attacked; in dogs the body and extremities ; in birds 

 the dependent part of the head, as the comb and 

 wattles. 



Modes of Infection. — Animals may become infected 

 by coming in contact with infected ones, by being 

 shipped in cars or boats in which infected ones have 

 recently been transported, by being placed in other 

 infected quarters, as barns, pastures, etc., or by 

 using blankets, rub-rags, etc., which have recently 

 been used upon infected animals. 



Treatment. — The most effectual remedial agent is 

 iodine, which should be brushed on the affected part 

 once a day; or, four percent nitrate of silver maybe 

 used. 

 AcHORiON Schoenleinii (Achor — scurf; Schoenlein) 



Disease. — Tinea favosa; honeycomb ringworm; 

 whitecomb. 



Animals Infested. — Infests by preference the smal- 

 ler animals, as the dog, cat, bird, rat, mouse, etc. 



Symptoms. — The fungi implants itself in the skin 

 at the opening of the hair follicle ; here it forms a 

 cup-shaped mass surrounding the hair or feather. 

 Later the hair falls out, which gives the skin a honey- 

 combed appearance. There is an odor given off 



