LETTER OF TRANSMITTAL 



Illinois State Laboratory of Natural History, 



Urhana, III., December ip, ipio. 



To THE Trustees of the University of Illinois : 



I have the honor to submit to you, for publication as a bulletin 

 of the State Laboratory of Natural History, a report on "Forest 

 Conditions in Illinois" prepared by two members of the Forest Service, 

 U. S. Department of Agriculture, R. Clifford Hall, Forest Assistant, 

 and O. D. Ingall, Forest Agent. The study upon which this report is 

 based was undertaken by the Forest Service in cooperation with the 

 State Laboratory of Natural History, the work being done under the 

 direction of Mr. J. G. Peters, in charge of the office of State and 

 Private Cooperation, and under the local instructions of the Director 

 of the Laboratory. By the terms of the cooperative agreement the 

 State Laboratory is authorized to publish the findings of the 

 investigation. 



Additional studies of insect injury to forest trees and products 

 throughout the state, made in this connection by one of the assistants 

 of the State Entomologist's Office, will be separately published in the 

 report of that office. 



Respectfully, 



Stephen A. Forbes, 



Director of Laboratory. 



