SOURCES OF ILLUSTRATIONS 



NUMBERS 9, 10, 11, 12, 19, 26, 27, 28, 29, 30, 31, 32, 33, 34, 

 35, 36, 37, 44, 45, 46, 47, 48, 49, 50, 59, and 60 are originals, 

 drawn from nature by Miss Henrietta G. Fox, of Minneapolis. 



Numbers 3 and 4 are originals drawn from nature by Miss 

 Josephine E. Tilden, of Minneapolis. 



Numbers 7, 8, 38, 39, 52, and 53, from F. E. BeaPs "Some 

 Common Birds in Their Relation to Agriculture." United States 

 Department of Agriculture. 



Numbers 54 and 55, from A. K. Fisher's "Hawks and Owls 

 from the Standpoint of the Farmer." United States Depart- 

 ment of Agriculture. 



Numbers 13, 14, and 15, from Hitchcock and Norton's "Weeds 

 of Kansas, III." In Bulletin No. 57, Kansas State Agricultural 

 College. 



Numbers 2, 5, 6, 20, 21, 22, 23, 24, 25, 42, 51, 56, 57, and 58 

 have been adapted from various sources. 



Numbers 16, 17, 18, and 40, from E. S. GofP's "Noxious 

 Weeds." In Bulletin No. 39, Wisconsin Agricultural Experi- 

 ment Station. 



No. 43, from Riley's " Report on the Rocky Mountain Locust." 



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