DISEASES OF SHEEP. 



333 



bleeding, the blood trickling down the nasfl passages and 

 streaking the copious mucus which is snorted out by the sheep 

 with violent efforts. Sometimes the grubs are thus ejected by the 

 violence of these efforts. 



There seems to be no practicable remedy even by prevention, 

 better than in common use, which is to apply a soft, sticky, 

 offensive substance to the sheep's nose by which the eggs 

 are destroyed, or the flies driven away. A mixture of common 

 tar softened somewhat by some offensive oil, is frequently used 

 with good effects. This tar is a wholesome thing for the sheep as 

 an excellent tonic and antiseptic, so that two good uses are made 

 of this application. 



When -the danger has been greater on account of the larger 

 number of the flies attacking the flock, the sheeps' noses need to 



FIG 21. Sheep's head; sinuses invaded by Grub. 



be continually protected by this device, and a mixture of the tar 

 with the strongest smelling fish oil may be used, by smearing the 

 sheeps' noses w r ith it daily, or every second or third day. 



In cases where the sheep have been seriously attacked by 

 the fly, and numerous grubs have lodged in the nasal sinuses on 

 each side of the head and just above the eyes as shown at fig. 

 21, an effective remedy is to inject a mixture of linseed oil and 

 turpentine, in equal parts, by means of a suitable syringe made 

 for this purpose. This instrument has a long, slender nozzle, by 

 which the sinus may be reached, and it should be made with three 

 or four openings at the end so that the liquid may be discharged 

 in a sort of spray, 01 diffused stream, and so reach the grubs. 

 Another plan borrowed from the Scotch shepherds, who have the 

 advantage of inheriting a large amount of old fashioned lore from 



