I50 INFECTIOUS AND PARASITIC DISEASES. 



ing parasite, burying its head and sometimes almost its 

 whole body in the integument. 



In various localities, e.g., Africa, and Montana, U. S., 

 fevers are described which are believed to be due to 

 the bites of ticks (tick-fever, Ixodiasis); the evidence 

 in favor of such relationship, however, is contradictory. 



