15 



canals, causing elq>hantiasis, characterized by enormous swellings of the legs, 

 arms and other parts of the body. 



House-fly and Typhoid Fever. 



Much attention has been directed in. recent years to the dangers of the house- 

 fly (IMusca domestica) and other flies as agents in the transmission of disease. 



The common house-fly : (a) adult fly ; {b) maggot ; (c) puparium ; {d) details 

 of feeler ; {e) end of body of maggot. 



All Public Health Departments now take cognizance of the house-fly and issue 

 warnings against its presence about the home. Epidemics of typhoid and cholera 

 in many cities as well as the outbreaks during the Spanish- American war brought 



The foot of a house-fly, showing pads, claws, and 

 hair upon which disease germs are carried. 



out the fact that the house-fly was largely responsible for the troubles. The 

 habits of this insect are such as to make its presence dangerous. It breeds in 



