vi PREFACE 



come again and the butterflies are well worthy of careful 

 observations by many interested students. 



The illustrations in the book require a word of credit. 

 The eleven color plates of adult butterflies with wings 

 spread have been made direct from a set of the remarkable 

 transfers which Mr. Sherman F. Denton has been pre- 

 paring for the last quarter-century, this particular set 

 having been prepared especially for this book. Transfers 

 of this sort were used as insets in Mr. Denton's work on 

 the "Moths and Butterflies of the United States," pub- 

 lished in a limited edition by J. B. Millet Company, 

 Boston. The other plates not reproduced from photo- 

 graphs are from drawings by Miss Mary E. Walker or 

 Mr. W. I. Beecroft. In case the photographs are not of 

 my own taking, credit is given beneath each. Two of my 

 photographs have already appeared in "Seeing Nature 

 First" and are here used by permission of its publishers, 

 J. B. Lippincott Company. 



C. M. W. 

 State Normal School, 



Lowell, Mass. 



