CONTENTS 



ARTICLE 1.— THE CADDIS ELIES, OR TRICHOPTERA, OF ILLINOIS. 



By Herbert H. Ross. August, 1944. 326 pp., frontis., 961 figs 1—326 



Introduction 1, Biology 1, Habitat preference 5, Distribution 12, Collecting and pre- 

 serving 15, Classification 18, Key to families 22, Extralimital Trichoptera 268, Check 

 list of Nearctic Trichoptera 291, Literature cited 305, Index 313. 



ARTICLE 2.— DUCK POPULATIONS AND KILL: An Evaluation of Some 

 Waterfowl Regulations in Illinois. By Frank C. Bellrose, Jr. November, 

 1944. 46 pp., frontis., 27 figs ' 327-72 



Acknowledgments 327, Legal protection 328, Regulations for Illinois 328, Evaluating 

 regulations 333, Vulnerability of species 336, Optimum shooting dates 354, Optimum 

 season lengths 355, Optimum shooting hours 356, Effect of bag limit 359, Laws for 

 depleted species 361, Effect of bait and live decoys 364, Effect of three-shell law 368, 

 Illinois duck harvest 368, Total effect of regulations 369, Summary 370, Literature 

 cited 372. 



ARTICLE 3.— OVERFISHING IN A SMALL ARTIFICIAL LAKE: Onized 

 Lake Near Alton, Illinois. By George W. Bennett. May, 1945. 34 pp., 

 frontis., 15 figs '. 373-406 



Acknowledgments 375, Characteristics of Onized Lake 375, Evidences of overfishing 

 378, Analysis of the population 382, Effects of overfishing 383, Largemouth bass 385, 

 Black crappie 388, Bluegill 392, Warmouth bass 395, Green sunfish 397, Yellow bass 

 398, Bullheads 399, Golden shiner 400, Miscellaneous fish 402, Age distribution of 

 fish 402, Discussion 404, Summary 405, Literature cited 406. 



ARTICLE 4.— WETWOOD OF ELMS. By J. Cedric Carter. August, 1945. 



42 pp., frontis., 30 figs 407-48 



Acknowledgments 407, Review of literature 407, Hosts and distribution 408, Trunk 

 pathology 409, Root pathology 413, Branch pathology 414, Foliage pathology 416, Dis- 

 sected elm 417, Isolations 418, Histology 419, The wetwood organism 420, Taxonomy 

 422, Erivinia nimipressuralis new species 423, Inoculations 423, Toxicity tests for wilt 

 425, Pressures in affected elms 430, Gas analysis 436, Sap analysis 437, The pH of sap 

 438, Control studies 439, Miscellaneous experiments 441, Conclusions 444, Summary 

 445, Literature cited 446. 



ARTICLE 5.— FOX SQUIRRELS AND GRAY SQUIRRELS IN ILLINOIS. 

 By Louis G. Brown and Lee E. Yeager. September, 1945. 88 pp., frontis., 

 42 figs 449-536 



Objectives of project 449, Methods of study 450, Acknowledgments 453, Populations 

 454, Species competition 463, Daily activity 464, Seasonal movements 465, Condition 

 467, Parasites and diseases 471, Predation 473, Breeding 473, Young rearing 486, 

 Illinois habitats 490, Foods and feeding 496, Nesting 510, Hunting 516, Management 

 520, Summary 529, Literature cited 533. 



INDEX 537 



