Vol. 11 No. 1-10 (1918)
Article 1 - An Outline of the Relations of Animals to their Inland Environments. Charles C. Adams
Article 2 - An Ecological Study of Prairie and Forest Invertebrates. Charles C. Adams
Article 3 - The Vertebrate Life of Certain Prairie and Forest Regions Near Charleston, Illinois. T. L. Hankinson
Article 4 - Some Additional Records of Chironomidae for Illinois and Notes on Other Illinois Diptera. J. R. Malloch
Article 5 - Phyllophaga Harris (Lachnosterna Hope): A Revision of the Synonymy, and One New Name. Robert D. Glasgow
Article 6 - An Experimental Study of the Effects of Gas Waste Upon Fishes, with Especial Reference to Stream Pollution. Victor E. Shelford
Article 7 - Some Edible and Poisonous Mushrooms. Walter B. Mcdougall
Article 8 - The Reactions nd resistance of Fishes to Carbon Dioxide and Carbon Monoxide. Morris M. Wells
Article 9 - Equipment for Maintaining a Flow of Oxygen-free Water, and for Controlling Gas Content. Victor E. Shelford
Article 10 - A Collecting Bottle Especially Adapted for the Quantitative and Qualitative Determination of Dissolved Gasses, Particularly Very Small Quantities of Oxygen. Edwin B. Powers