270 OBSERVATIONS ON 



OESTRUS CURVICAUDA. 



This insect lays its nits or eggs on 

 horses' legs, flanks, &c. each on a single 

 hair. The maggots when hatched do not 

 enter the horses' skins, but fall to the 

 ground. It seems to abound most in 

 moist, moorish places, though sometimes 

 seen in the uplands. White. 



NOSE FLY. 



About the beginning of July, a species of 

 fly (musca ) obtains, which proves very tor- 

 menting to horses, trying still to enter their 

 nostrils and ears, and actually laying their 

 eggs, in the latter of those organs, or per- 

 haps in both. When these abound, horses 

 in woodland districts become very impati- 

 ent at their work, continually tossing their 

 heads, and rubbing their noses on each 

 other, regardless of the driver, so that ac- 

 cidents often ensue. In the heat of the 

 day, men are often obliged to desist from 

 ploughing* Saddle-horses are also very 



