FILARIA BANCROFTI 



8l 



carried by the thoracic duct into the venous system 

 unless there is lymphatic obstruction. 



In most cases these worms do not affect the general 

 health, though as they give rise to a certain degree of 

 eosinophilia they must exercise some toxic effect. 



FIG. 40. Filaria bancrofti. a, Papil'se on the cephalic extremity in 

 the icmale ; b t numerous minute papillae anterior to the cloaca in the male ; 

 f, spicules in the male. (After R. T. Leiper.) 



The disorders attributed to the worm are those due to 

 lymphatic dilatation, obstruction, or inflammation, or to 

 the obliterative changes set up in the glands. These are 

 6 



