Vol. 12 No. 1-4 (1917)
Article 1 - The Relation of Evaporation and Soil Moisture to Plant Succession in a Ravine. Fred Theodore Ullrich
Article 2 - A Classification of the Lepidoptera Based on Characters of the Pupa. Edna Mosher
Article 3 - A Preliminary Classification of Diptera, Exclusive of Pupipara, Based Upon Larval and Pupal Characters, with Keys to Imagines in Certain Families: Part I. John R. Malloch
Article 4 - The Zygoptera, or Damsel-flies, of Illinois. Philip Garman
Published:
1917-06-30