SOURCES OF ILLUSTRATIONS ix 



Dr. S. J. Hunter of the University of Kansas loaned electro- 

 types of Figs. 112 and 113. . 



Prof. T. B. Symons of the Maryland Agricultural Experiment 

 Station loaned electrotypes of Figs. 119, 267, 310, 311, 312, 

 313, and 314. 



Prof. H. E. Summers of the Iowa Agricultural Experiment 

 Station loaned drawings of Figs. 154, and 333. 



Director P. H. Rolfs of the Florida Agricultural Experiment 

 Station loaned photographs of Figs. 169 and 302. 



Director T. C. Johnson of the Virginia Truck Experiment 

 Station furnished copy for Figs. 217 and 269. 



The Orange Judd Company of New York City kindly furnished 

 electrotypes of Figs. 219, 301 and three of the Riley figures. 



Director J. C. Kendall of the New Hampshire Agricultural 

 Experiment Station loaned the following electrotypes and several 

 of the author's illustrations: 34, 43, 49, 118, 256, 322, 397, 417, 

 445, 447 and 448. 



Director S. W. Fletcher of the Virginia Agricultural Exper- 

 iment Station and Dr. E. A. Back of the Virginia Crop Pest 

 Commission furnished the following: Figs. 36, 393, 440, 442, 

 and 443. 



Dr. W. E. Britton, State Entomologist of Connecticut, fur- 

 nished electrotypes and photographs of the following: Figs. 41, 

 284, 305, 390, 416, 426, 429, 430, 477, 478, 479. 



Prof. R. I. Smith of the North Carolina Agricultural Exper- 

 iment Station furnished photographs of Figs. 280, and 291. 



Prof. A. L. Quaintance furnished photographs of Figs. 282, 

 286, 287, 288, 289, and 290. 



Director F. B. Mumford of the Missouri Agricultural Exper- 

 iment Station loaned Figs. 434 and 435. 



Prof. C. S. Crandall of the Illinois Agricultural Experiment 

 Station, loaned drawings of Figs. 436 and 492. 



Messrs. Houghton, Mifflin & Co. furnished Fig. 221, from the 

 Riverside Natural History. 



The Friend Manufacturing Company contributed Fig. 45. 

 The Deming Company furnished Figs. 27, 28, 30, 33, and 39. 



