PREFACE. 



1 F the products of the season's labor are damaged by an insect foe, 

 the cause of its appearance can be ascertained and means of pre- 

 vention made prominent factors in subsequent calculations. While 

 the insect tribe contains some foes, it has among its members many 

 insect friends. The grain producer and fruit-grower will do well to 

 cultivate their acquaintance. 



It is with the desire that intelligent action may be directed against 

 one of our aggressive herbiverous insects, and a more intimate ac- 

 quaintance formed with our melliferous insect friend, that this publi- 

 cation is sent forth. Paradoxical as it may seem, the former insect 

 when properly dealt with proves a blessing in disguise. The latter 

 calls upon the alfalfa blossom for its nectar to enrich our table, and 

 by its visit increases the seed crop twofold. 



It is expected that experiments begun one year ago and continued 

 this summer will be carried on during the coming season, and infor- 

 mation upon operation and results will be given at a later date to 

 those interested. 



In the preparation of this work I am indebted to Chancellor F. H. 

 SNOW and Dr. S. W. WILLISTON for valuable suggestions. 



Daring the field-work, a report of which this is, an expression of 

 my appreciation is due Supts. Gr. W. WATSON and J. H. SMART, of 

 the firm of BALL & GODDARD, Kinsley, and Co. Treas. C. H. HUM- 

 PHREY and Hon. THOMAS H. FORD, of Syracuse, for valuable assistance. 



In behalf of this department, grateful acknowledgment is made to 

 the Atchison. Topeka & Santa Fe, Chicago, Rock Island & Pacific, 

 Union Pacific and Missouri Pacific Railway Companies for material 

 cooperation. 



