l'()ri,TK\- DISKASI'S AM) Tlil'.IK T KIvATMENT. Ill 



tlu' I'uuK's of l)uniin;; suliilmr i'V Imniini;' lar or tlu- slrain of 

 l)oiliiiL;' tar water ha^ hccii rccomnu'iKkMl. 



If a llock i> infested with tliis ])arasite it is l)est wlien 

 possible to start a new lli>ek with incubator chicks raised on a 

 new range and earefull\- i)roteeted from infection from the old 

 dock. ( ^r stock ma\- Ijc ])urclia>e(l from an uninfested Hock. 

 l*)ir(ls with this i)arasite should not be boui^ht or sold lor breed- 

 ing or laving purposes, as the llock into which the\' are intro- 

 duced will become infested from them, v'^ince this ])ara>ite can 

 not live long outside the bird's body, the houses, runs, etc., do 

 not remain infested long after all the diseased birds ha\e been 

 reuKwed. 



Prognosis. — A bird once infected is probably never free from 

 the parasite but ma}' live a long time little harmed by its ])resence. 



