Bui. 85, Part VI, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate V. 



Fig. 1.— Damage to a Field of Corn in Indiana in 1906 by the Corn Root-Aphis 

 (Aphis maidi-radicis). (Original.) 



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Fig. 2.— Same Field a Year Later, Showing the Effect of Applying Barnyard 



Manure. (Original.) 



