INTRODUCTION 
With the passage, by the Forty-fifth and Forty-sixth General 
Assembhes, of laws enlarging the scope of the work of the State Ento- 
mologist's office and greatly increasing its resources, it has become 
desirable and possible for assistants of the office to prepare, for its 
regular reports, articles on special subjects assigned to them, or upon 
which they have personally done an important amount of investigation 
or experimental work. The present report is the first to be prepared 
under the new conditions, and the principal article in it is by Dr. J. W. 
Folsom, who has served during his vacations as a university instructor 
in entomology as a temporary assistant to the State Entomologist. 
Consistently with the present method of publication of papers pre- 
pared by the Entomologist and his assistants, the three articles of this 
report have been previously issued as Bulletins 130, 131, and 134 of 
the Agricultural Experiment Station of the University of Illinois; 
Bulletins 130 and 131 in December. 1908, and 134 in April, 1909. 
The following are the state laws recently passed respecting the 
Work of the Illinois Entomologist : 
An Act to provide for the office of the State Entomologist, to 
define its duties, and to extend its equipment. 
Section 1. Be it enacted by the People of the State of Illinois, 
represented in the General Assembly: That it shall be the duty of 
the State Entomologist to investigate, by himself or by his assistants, 
all insects dangerous or injurious in this State to agricultural 
and horticultural plants and crops, to live stock, to nursery trees 
and plants, to the products of the truck farm and the vegetable garden, 
to the shade trees and other ornamental vegetation of cities and towns, 
to the products of mills and the contents of warehouses, and to all 
other valuable property, and to investigate all insects in this State 
injurious or dangerous to the public health; and he shall conduct ex- 
periments with methods for the prevention, arrest, abatement and 
control of injuries to person and property by such insects, giving no 
preference in his investigations to one part of the State over another. 
He shall, further, instruct the people of the State, by lecture and dem- 
onstration, as may in his judgment be practicable and necessary, in 
the best methods of preserving and protecting their property and their 
health against injuries by insects; and he shall prepare, from time to 
time, articles on the injurious and beneficial insects of Illinois, con- 
taining the results of his researches, which articles shall be published 
as bulletins of the Agricultural Experiment Station, and shall also be 
issued biennially in an edition of one thousand copies as his official 
report. He shall present to the Governor biennially an executive re- 
port describing the operations and publications of his office, together 
with a financial statement in detail. 
