iv 



PAGE 



Summary concerning measures, other than burning, for destroy- 

 ing the beetles in hibernation 30 



Burning in hibernation 30 



Without use of blow torch 30 



With blow torch 30 



Summary on burning in hibernation 32 



Cultivation 34 



General summary 35 



ARTICLE II.. NOTES ON A COLLECTION OF ERYTHROXEURA 

 AND HYMETTA (EUPTERYGIDAE) CHIEFLY FROM ILLINOIS, 

 WITH DESCRIPTIONS OF NEW FORMS. BY W. L. McATEE. 



April, 1924 39-44 



ARTICLE III. SECOND REPORT ON A FOREST SURVEY OF ILLI- 

 NOIS. THE ECONOMICS OF FORESTRY IN THE STATE. BY 

 HERMAN H. CHAPMAN AND ROBERT B. MILLER. ArcrsT. 



1924 46-172 



Introduction vii 



Foreword 46 



Wood and the industries of Illinois 46 



Total consumption of wood in Illinois 49 



Production of wood in Illinois 51 



Future supplies of wood 53 



Substitutes for wood 54 



The use of wood in manufacturing industries 55 



Farm implements and machinery 67 



Relative importance of industries entirely dependent on wood .... 57 



In industries which make extensive use of wood 58 



In industries dependent on wood pulp and paper 62 



Minor uses of wood in industries 63 



Economic value of wood industries 64 



Consumption of wood by steam railroads 66 



By electric lines and light and power companies 69 



Renewals, replacements, and future supplies 70 



Timber preservation 71 



The uses of wood in mining 76 



Cost of mining timbers 79 



Consumption of wood on Illinois farms 83 



Consumption of fence posts 83 



Durability of wooden posts 86 



Supply and prices of wooden fence posts 87 



Substitutes for wooden fence posts 89 



Consumption of wood for fuel 91 



Sources of supply of lumber for Illinois consumers " 93 



States and regions from which lumber is imported 96 



Freight charges 100 



Retail prices 105 



