SMITHSONIAN INSTITUTION. 



UNITED STATES NATIONAL MUSEUM, 



DIRECTIONS FOR COLLECTING AND REARING 



DRAGON FLIES, STONE FLIES, AND 



MAY FLIES. 



JAMES G. NEEDHAM, Ph. D. 



Lake Forest College, Lake Forest, Illinois. 



Part O of Bulletin of the United States National Museum, No. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 l8qq. 



