109 
* 
bringing together so successfully the noxious and beneficial insects of 
the State in such a way that those not conversant with the technical 
terms of the science may be enabled to recognize them in the relative 
positions which they occupy. The wood cuts illustrating the insects 
treated of, unless otherwise stated, are original, made expressly for my 
report, drawn by Mr. J. H. Emerton, of Salem, Mass., from nature, the 
specimens sent him by myself. 
To Mr. J. Duncan Putnam, Davenport, Iowa, I wish to express my 
earnest thanks for the valuable assistance gained by notes on the ma¬ 
ple tree bark-louse, Lecanium acericola , and other insects, as also the 
generous disposition of his most excellent library. 
To E. T. Cresson, P. R. Uhler, C. V. Riley, E. R. Boardman, F. M. 
Webster and others I am indebted for assistance, and to all agricul¬ 
tural editors who have sent me papers, notes, specimens and all other 
favors I am truly grateful. 
It gives me great pleasure to acknowledge my indebtedness to Col. 
R. G. Ingersoll, of Peoria, for the influence he has so generously ex¬ 
erted in my behalf. Through his kindness I have been enabled to 
obtain free passes on all the important railroads of the State, thus 
affording me the opportunity of making more extensive field exami¬ 
nations than I could otherwise have done. And to the Superintend¬ 
ents of the roads, who so readily complied with his request, I express 
my sincere thanks. 
Among the number are the Chicago, Burlington & Quincy; Chicago, 
Rock Island & Pacific ; Illinois Central; Peoria, Pekin & Jacksonville ; 
Toledo, Peoria & Warsaw; Chicago & Alton; Indianapolis, Blooming¬ 
ton & Western ; Peoria & Rock Island; Pekin, Lincoln & Decatur ; 
Western Union, and the Illinois Midland. 
And most of all I would express my gratitude to you for the trust 
implied in my work, and the encouragement you have ever given me 
in the pursuit of this my favorite study. 
Most respectfully yours, 
Emma A. Smith. 
Peoria, III., December 20, 1877. 
