External and Internal Parasites of Animals. 247 



The horn fly of cattle is very common in some seasons, 

 it is a little black fly, often found in clusters around the 

 horn base, for its prevention bi-weekly applications of 

 fish oil containing carbolic acid, one ounce to the gallon 

 of oil and applied along the back and around the horns. 

 Its effects are too well known to need description. The 

 use of this mixture will also tend to keep off the warble 

 fly, the effects of which are seen in the warbles found on 

 the backs of cattle, when removed the warble (larv;e of 

 the fly) should be at once destroyed. Hides are often 

 materially injured owing to attacks of this fly during the 

 life of the animal. 



Poultry lice cause intense itching and loss of condition 

 in the host, and should not be permitted to exist in any 

 up-to-date poultry house. Cases are cited in which ani- 

 mals (horses, etc.,) have become affected when the poul- 

 try roosted with them. The removal of the poultry and 

 the use of insect powder if in winter or the creolin lotion 

 in summer, together with the plentiful use of kerosene 

 or hot lime wash, will overcome the trouble; use sulfur 

 lavishly or insect powder in the nests. Hen houses 

 should be thoroughly treated twice yearly with hot lime 

 wash, the roosts and nests being plentifully dowsed with 

 kerosene. 



Summer sores in horses are said to be parasitic in their 

 nature, in India being termed biirsattee. The disease is 

 shown by sores on the skin, at the fetlocks, sheath, face, 

 lips and front of the chest; at the beginning the sores are 

 red and unhealthy looking, sometimes nearly a foot in 

 diameter, are often kept moist by the discharge, in the 

 sores are often found little pea-shaped hard yellowish 



