20 BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
95. LeBaron, W. Present state of noxious insects. <Trans. Ill. 
State Hortic. Soc. for 1872, 1873, n. s., v. 6, pp. 257-261. 
Notes on the prevalence and multiplication of insects; enemies of Mytilaspis 
pomorum; note on an attempt to transport parasites; coal tar and other 
insecticides for cankerworms. 
96. LeBaron, W. Lecture on insects. <5tli Ann. Kept. Trustees 
Ill. Indust. Univ., 1871-72, 1873, pp. 193-200. 
Importance of entomology; distribution of Blissus leucoplerus ; losses caused 
by the same; numbers of injurious insects; methods of counteracting them. 
97. LeBaron, W. Third annual report on the noxious insects of the 
State of Illinois. <Report to General Assembly, 1873, v. 4. 
Separate: <Springfield, 1873, pp. t-p.+4-f p. 167-202-fp. 1-37, 
7 figs. 
CONTENTS. 
Table of contents. 4 
Introduction.,. . 5 
Insects injurious to the apple. 167 
cottonwood. 193 
Transportation of useful parasitic insects. 200 
Outlines of entomology. 1 
98. LeBaron, W. Insect eggs from Kansas. <Prairie Farmer, 28 
March, 1874, v. 45, p. 98. 
Injuries to apple orchards by minute hymenopterous larvie. 
99. LeBaron, W. Golden tortoise beetles. <Prairie Farmer, 13 
June, 1874, v. 45, p. 185. 
Means against injuries of Cassida [= Coptocycla ] aurichalcea to sweet potatoes. 
100. LeBaron, W. An address upon noxious insects in general and 
upon certain species in particular. <Trans. Ill. State Hortic. 
Soc. for 1873, 1874, n. s., v. 7, pp. 90-100. 
Estimates the number of injurious insects m the United States at 500 species, 
of which 100 are seriously destructive; divides the 100 into classes accord¬ 
ing to their injuries, the orders they belong to, and the nature of their 
injuries; principal agencies against injurious insects. 
101. LeBaron, W. [Insects affecting fruits and crops.] <Trans. Ill. 
State Hortic. Soc. for 1873, 1874, n. s., v. 7, pp. 234-235. 
Abstract of address; maintains the importance of economic entomology. 
102. LeBaron, W. Fourth annual report on the noxious and bene¬ 
ficial insects of the State of Illinois. <Trans. Ill. State 
Hortic. Soc. for 1873, 1874, n. ser., v. 8, pp. 18 -f 199, 94 figs. 
Separate: <Springfield, 1874, pp. 18 4 - 199, 94 figs. 
CONTENTS. 
Introduction-.. 3 
Outlines of entomology. 5 
Preface. 7 
Systematic index. 11 
Synopsis of the tribes of the Coleoptera. 16 
Outlines of entomology. Insects in general. 1 
Coleoptera. 26 
Catalogue of the principal authors who have written upon the Co¬ 
leoptera * * * 186 
Glossary. 191 
Index of families, subfamilies, and genera. 195 
