The Rot in Sheep. 



37 



frequently, however, some of its digestive tubes are replete with 

 dark-coloured bile. while others are empty, which gives to the 

 entozoon a peculiar parti-coloured hue. 



Fig. 3. 



Magnified view of the external Burface of the THstoma hepaticum, showing the paptllated state 

 nl the skin, with the oral ami vciitr.il suckers, &c. 



External Surface. — When the external surface is examined 

 with a low magnifying power, the skin is found to be thickly 

 covered with minute papillae which point towards the posterior 

 part of the body (see fig. 8). In some specimens we have found 



