290 The Farmer's Veterinary Adviser. 



system. Tlie following is a good example of a tonic mixt- 

 ure : 



Linseed, rape, pea, oat, barley, or unbolted wheat 

 flour, 40 lbs. 



Powdered gentian or anise seed, 4 " 



Common salt, 4 " 



Sulphate or oxide of iron, 1 " 



Give half a pint daily to each sheep. 



In all treatment it is essential to remove from the in- 

 fested meadow to a perfectly dry pasture or salt marsh on 

 either of which the eggs of the fluke will perish. To tiim 

 on a wet fresh pasture is merely to stock that with the 

 parasites. 



Prevention. Keep sheep on high dry pastui'es or salt 

 marshes where the fluke cannot live out of the body 

 Feed salt daily if flukes exist to however limited an extent ; 

 this is fatal to the young flukes and will destroy most of 

 them as they are taken in. Thorough drainage of infested 

 pastures will make them wholesome. This may fail when 

 land is subject to inundations, and iu this case such land 

 should be devoted to raising hay or other crops. Keeping 

 the sheep off the infested fields at nights and until the 

 dews leave the grass in the morning will go a long way 

 towards protecting them. In some instances of the intro- 

 duction of this parasite into a new country the contami- 

 nated sheep should be destroyed and the infested pasture 

 with a wide area aroimd it proscribed from being grazed. 



For otJwr parasites of the liver, see general article on 

 ■'Paeasites," 



