ii PREFACE 



and their control as given is based upon conditions east of the 

 Rockies, and practically no consideration has been given to the 

 conditions of the Pacific Coast or of the irrigated country of the 

 far West. 



The author is well aware that there are doubtless many errors 

 of fact or of wrong emphasis in these pages. Such must nec- 

 essarily be the case in a work the greater part of which must be 

 compiled. All of the leading authorities on the subject discussed 

 have been consulted and the writer has endeavored to present 

 their evidence fairly, with such interpretation as his personal 

 knowledge made possible. He will be greatly indebted to those 

 who will aid him in securing the accuracy of the work by report- 

 ing any errors Or by suggesting improvements in it, as it is hoped 

 to revise the pages from time to time so that they may serve 

 as a reliable reference work upon our insect pests of the farm, 

 the garden, and the orchard. 



On the following pages are given the sources from which 

 the illustrations have been secured, but the author wishes to 

 express his special appreciation of the very large number of figures 

 which were furnished him by Dr. L. O. Howard, Chief of the 

 Bureau of Entomology, and Mr. J. A. Arnold, Chief of the 

 Division of Publications, of the United States Department of 

 Agriculture, either as electrotypes or original drawings or photo- 

 graphs, and to Ginn & Company of Boston, for the loan of 

 numerous electrotypes made for an Elementary Entomology by 

 Prof. C. F. Jackson and the writer, now being published by 

 them. 



E. DWIGHT SANDERSON. 



WEST VIRGINIA UNIVERSITY, 

 MORQANTOWN. 



