DISTOMATOSIS — LIVER FLUKE DISEASE — LIVER ROT. 



303 



hepatitis, perihepatitis, with the formation of numerous false mem- 

 branes, or even infectious fibrinous peritonitis. Should the patients die 

 during this phase one finds young distomata at the surface of the liver, 

 or even in the thickness of the false membranes. 



Fig. 159. — Tabular diagrain of the occurrence of the common liver fluke [Fasciola 

 hepatica) durmg different months of the year, a, Cattle; 6, sheep; c, swme. 

 (After Leuckart, 1889, p. 301, Fig. 147.) 



\Yhen infestation is discrete the appearances are quite different. 

 Careful breeders have even stated that at this period the young sheep 

 appear to show a greater tendency to fatten. 



II. Second period. In the primary phase deaths are exceptional ; they 



