Vol. 9 No. 1-12 (1913)
Article 1 - On the Common Shrew-mole in Illinois. Frank Elmer Wood
Article 2 - A Study of the Food of Moles in Illinois. James A. West
Article 3 - The Vegetation of the Inland Sand Deposits of Illinois. Henry Allan Gleason
Article 4 - Forest Conditions in Illinois. R. Clifford Hall, O. D. Ingall
Article 5 - The Vegetation of the Beach Area in Northeastern Illinois and Southeastern Wisconsin. Frank Caleb Gates
Article 6 - The Midsummer Bird Life of Illinois: A Statistical Study. Stephen A. Forbes
Article 7 - Observations on the Breeding of the European Carp in the Vicinity of Havana, Illinois. R. E. Richardson
Article 8 - Some New Illinois Enchytraeidae. Frank Smith, Paul S. Welch
Article 9 - Biological and Embryological Studies on Formicidae. M. C. Tanquary
Article 10 - Studies on the Biology of the Upper Illinois River. Stephen A. Forbes, R. E. Richardson
Article 11 - Vegetation of Skokie Marsh. Earl E. Sherff
Article 12 - Observations on the Breeding Habits of Fishes at Havana, Illinois, 1910 and 1911. R. E. Richardson