ULTRAVIOLET LIGHT — GERSHENFELD 225 



widening. New sanitar}^ aids and more effective methods are being 

 developed continuously for the prevention of many diseases and to 

 rid materials of infective agents and environments of insanitary 

 conditions. Your familiarity with the data presented will help to 

 form an enlightened public opinion. An enlightened public con- 

 sciousness in all that concerns the well-being of the everyday citizen, 

 fortified by a familiarity with important measures that can be used 

 to promote public health, will necessarily result in a greater utiliz- 

 ation of these sanitary aids and a more widespread introduction of 

 proper sanitary practice. 



