BISEASBS DUE TO INTERNAL PARASITES. 233 



at once, unless they are specially valuable and are not badlv 

 affected. If kept they must not be put on wet ground. 



"3. Care must be taken to avoid introducing eggs of the 

 fluke, either with manure or fluked sheep or in any other way. 

 Eabbits and hares must not be allowed to introduce the ea'o's 



"4. All heavy a;id wet ground must be thoroughly drained. 



"5. Dressing of lime and salt (or both) should be spread 

 over the ground at the proper season to destroy the embryos, the 

 cysts of the fluke and also the snail, which acts as host. 



"6. Sheep must not be allowed to graze closely, for the 

 more closely they graze the more fluke germs they will pick up. 



"7. When sheep are allowed to graze on dangerous ground 

 they should have a daily allowance of salt and a little dry food." 

 Medicinal Crcatment. 



A perfect cure is almost hopeless. After the period of 

 migration of the flukes to the intestines, a spontaneous cure 

 sometimes results, which, however, is very rare. So far as me- 

 dicinal treatment is concerned, Mojkowski reports, according to 

 Xeumann, satisfactory results by giving the sheep napthol twice 

 daily for a week, in ten to fifteen grain doses, alone or mixed 

 with gentian. Another old English recipe calls for 



Sulphate of iron 1 drachm 



Salt ^ drachm 



Anise seed ^ drachm 



Mixed with half a pound each of linseed meal, peas and 

 locust beans, and given daily to each sheep. The fact that salt 

 is fatal to the fluke and that sheep may be grazed with impunity 

 on salt marshes, is evidence that salt should be freely offered to 

 sheep. This is best accomplished by keeping quantities of rock 

 salt within easy access. Combined with medicinal treatment a 

 proper stimulating and nourishing diet is of great importance. 

 Corn, barley, peas, oats, oil-meal, cake, any dry grains, should 

 be fed in judicious proportions. Watery foods such as turnips, 

 Swedes, etc., are to be avoided. 



