304 



FILARIiE AND THEIR ALLIES 



from its normal channel, and results in varicose lymph glands 

 (Fig. 127C) and vessels and in distended lymph sacs which may 

 burst into the kidneys, bladder or body cavity. Often the 

 microfilaria; disappear from the blood, probably on account of the 

 death of the parents, but the obstruction of the lymphatics 

 continues to exist, as do the evil effects resulting therefrom. 



Fig. 127. A few extreme cases of elephantiasis; A, of legs and feet; B, of 

 scrotum; C, varicose groin gland ; D, of scrotum and legs; £, of mammary glands. 

 (A and B sketched from photos from Castellani and Chalmers; C, D and E from 

 Manson.) 



One of the most frequent results of a blocking of the lymph 

 vessels is an enormous enlargement of the part of the body 

 in which the blocking occurs, known by the suggestive name, 

 " elephantiasis " (Fig. 127). In most cases the lower limbs and 

 scrotum are the parts affected, though almost any portion of 



