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. 



Jan. Teh. Mar Apr. May ilun. Jul\^. Aug. Seft. Oct. Nov. Dec. 



Fig. 159. — Tabular diagram of the occurrence of the common hver fluke {Fasciola 

 Jiepatica) durmg different months of the year, a, Cattle ; b, sheep ; c, swine. 

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



When 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 



