136 



PRACTICAL PAEASITOLOGY 



Upon the inner aspects of the tubes these processes take the form of 

 small pouchings (fig. 59). 



When the specimen is held against the light, the sides of the 

 tongue-shaped body will appear to be granulated. These granular 

 markings are the yolk-glands, which extend backwards along each side 

 until they meet at the posterior tip of the body, leaving a transparent 

 and lighter central field of the same shape as the body of the fluke. 



D. 



Do. 



FIG. 59. Fasciola hepatica, 

 L. 5:1. Young parasite with- 

 out organs of reproduction. 



FIG. 60. Fasciola hepatica, L. Slightly 

 magnified. D., Commencement of the intestine. 

 Do. , Yolk-gland. Dr. , Ovary. O. , Oral sucker. 

 Ov., Uterus. S., Ventral sucker. T., Testes. 

 (After Glaus.) 



The hinder and larger portion of this field is occupied by the testes, 

 which are very much ramified, and are less easy of detection than the 

 yolk-glands. The uterus will, however, be readily seen on account of 

 the opaque eggs which it contains, many of which are of a brownish 

 colour. Its folds lie across the body in front of the testes, and may 

 be traced to the genital opening. It is frequently possible to see eggs 

 in process of extrusion from the mouth of the uterus. Close to the 



