Vol. 14 No. 1-10 (1923)
Article 1 - The Orchard Birds of an Illinois Summer. Stephen A. Forbes, Alfred O. Gross.
Article 2 - Distribution of the Fresh-water Sponges of North America. Frank Smith
Article 3 - A Study of the Malarial Mosquitoes of Southern Illinois: II Operations of 1920. Stewart C. Chandler
Article 4 - Changes in the Bottom and Shore Fauna of the Middle Illinois River and its Connecting Lakes since 1913-1915 as a Result of the Increase, Southward, of Sewage Pollution. Robert E. Richardson
Article 5 - The Helminthosporium Foot-rot of Wheat, with Observations on the Occurrence of Saltation in the Genus. F. L. Stevens
Article 6 -The Numbers and Local Distribution in Summer of Illinois Land Birds of the Open Country. Stephen A. Forbes and Alfred O. Gross
Article 7- Codling-moth Investigations of the State Entomologist's Office 1915, 1916, 1917. P. A. Glenn
Article 8 - First Report on a Forestry Survey of Illinois. Robert B. Miller
Article 9 - The Determination of Hydrogen Ion Concentration in Connection With Fresh-Water Biological Studies. Victor E. Shelford
Article 10 - On the Numbers and Local Distribution of Illinois Land Birds of the Open Country in Winter, Spring, and Fall. Stephen A. Forbes and Alfred O. Gross