THE HORSE-TICK 143 



force the stream back into the same vessel. The emulsion 

 will form quicker if boiling hot milk is used. For dipping 

 use, one gallon of the emulsion for each ten gallons ofwater 

 is required. Fifty gallons of this dip will suffice for fifty 

 sheep, seventy will probably answer for one hundred. Much 

 depends upon the amount of waste on account of the liquor 

 being carried off by the fleece." 



Another ver^^ effective remedy, much used in Europe, 

 from where this parasite reached the United States, is the 

 following one, which seems to be very simple. A small 

 piece of gray mercurial salve, about the size of a hazelnut, is 

 well rubbed upon each animal along the back, below the 

 throat, and between the front legs, immediately after shear- 

 ing. This application should he repeated after ten days to 

 destroy any new intruders. 



THE HORSE-TICK OR FOREST-FLY. 

 {Hippohosca emilna Linn.). 

 These parasites are winged, and attack, during summer 

 and early autumn, horses, cattle, and even dogs. They in- 



Fig. 123. — Horse-tick. Greatlj' enlarged. Original. 



fest those parts of the animals which have the thinnest skin 

 and fewest hairs, as regions about the tail and the belly. 



