TROPICAL MEDICINE AND HYGIENE 



In the Tropics, where dogs are considered as unclean 

 animals, the disease is rare, but it does occur in India and 

 elsewhere. 



FIG. 37. Tcenia echinococcus. 



The cysticercus of the parasite may attain enormous 

 dimensions, as in man secondary cysts daughter-cysts 

 are formed in the interior of the primary cyst in great 

 profusion (fig. 38). This formation of cysts may con- 

 tinue for f years, whilst many of them are barren and 



