INTRODUCTION. 
I may here add that the lateness of the date at which the bill for the 
appropriation for the purpose of illustrating this report passed the 
General Assembly, aud the time required for preparing the engravings, 
have necessarily caused a delay in the publication ot this report of sev- 
eral months beyond the usual time. 
I also deem it proper here to put on record, that the preparation of 
the above mentioned bill, and its passage through the General Assem- 
bly, were largely due to the interest and exertions of that well known 
friend of popular education, the Hon. Elmer Baldwin, of LaSalle county. 
Respectfully submitted. WILLIAM LeBARON, 
Geneva, September 1, 1874. Mate Entomologist. 
