HOW TO KNOW 

 THE BUTTERFLIES 



A Manual of the Butterflies of the Eastern United States, hy 

 JOHN HENRY GOMSTOCK 



Emeritus Professor of Entomology, Cornell University 



AND 



ANNA BOTSFORD GOMSTOCK 



Assistant Professor of Nature-Study, Cornell University 



This work contains descriptions of 152 species and varieties 

 of butterflies. This includes all of the species and their named 

 varieties found in the eastern half of the United States ex- 

 cepting a few extremely rare forms. 



There are 45 plates with 312 figures showing the insects in 

 ^^ their natural colors and 49 figures in the text. 



Cloth, The work is written in popular form without being super- 



ip .3U net, ficial, and will serve as a Baedeker among Butterflies to the 



DOStfl^C 



20c. add!- casual observer or the close student of this most pictur- 



tional. esque phase of nature. 



THE GOMSTOCK PUBLISHING GOMPANY 



Ithaca, New York 



