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NORTH AMERICAN INSECT: 



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The Day-fly (Ephemera vulgata) is another interesting 

 genus of this order, and perhaps the most wonderful of all 

 in its brief history and sudden transformations. It is an 

 inhabitant of Europe as well as of America, and may often 

 be seen in great numbei? emerging from the surface of our 

 rivers, lakes, and ponds. In their perfect or %\*inged state 

 they live only a short time, as their name implies, many of 



