Mathematical Logic. J.S. Turner pages 69-114

A New Species of Hygrophorus. L.H. Pammel pages 115-116

A List of Fleshy Fungi from Webster County, Iowa. F.W. Paige pages 117-136

The Relation of Oxygen to the Germination of the Chlamdospores of Ustilago Zeae (Beck.) Unger. G.A. Platz pages 137-144

Acceleration of Lipase Activity by Substances Containing Vitamin A. Birger L. Johnson pages 145-154