320 PHARMACET7TICAL, BACTERIOLOGY 



water, more remote from habitations. Air currents may carry them 

 greater distances. These discoveries have made possible a very effectual, 

 campaign against this dread disease. The; Federal Government aided by 

 State and Local Boards of Health have inisisted on a discontinuance of 

 those breeding places which can be controlled easily. The larger ipore 

 public breeding places were covered with crude oil. Screening windows 

 and doors and sulphur or Pyfethrum: fumigation of mosquito-infected, 

 houses and rooms was insisted upon and individuals were instructed, in 

 methods of self-protection against the bites of mosquitos. As a result the 

 yellow fever ravages are now reduced to a roinimumi 



