LOUSINESS. 105 



destruction of either kind of lice is as follows : Staphisa- 

 grise sem. et veratrum alb., a.a. 31., aquie Ci. ; boil until the 

 residue measures two quarts ; apply freely to the skin. It 

 is not necessary to use as powerful applications as those 

 recommended for mange. A solution of carbolic acid is also 

 of great efficacy. Having the body of the animal nicely 

 clipped, if the season of the year is suitable, is often all that 

 is necessary. Poultry lice cause a great deal more irritation 

 than the ordinary equine lice. It is astonishing how in- 

 jurious poultry are to horses. Even though they do not 

 communicate lice to them, they appear to be peculiarly 

 injurious to horses, and should never be kept where horses 

 are. Another precautionary measure consists in keeping 

 the affected animal from cominsj into contact with animals 

 not affected. The clothing, harness, etc., should also be 

 washed with a weak solution of carbolic acid, and the stall 

 or box occupied by the patient should be well washed or 

 fumigated with sulphur fumes. 



Fly. — Often considerable irritation is caused by flies. 

 There is a fly which very much resembles, and on a casual 

 examination might easily be mistaken for, the common 

 house-fly ; it, however, differs to a slight extent, both in 

 appearance and habits. There was, some years ago, great 

 excitement over a so-called disease which suddenly appeared, 

 affecting horses and cattle in large numbers, and was sup- 

 posed to be contagious. The trouble was, however, on 

 examination, found to be due to the attack of the above- 

 mentioned fly. They are most abundant during the months 

 of August and September. They may be easily distin- 

 guished from the house-fly by the severity of their bite, 

 which is often felt even when protected by pretty thick 

 clothing, and sometimes even bringing blood. The body is 

 also longer and slimmer than that of the common house-fly. 

 They may come into the house at certain seasons. They 



