Seasonal Food Preference Trends of Eastern Ruffed Grouse in Iowa as Shown By Dropping Analysis. Emmett B. Polderboer pages 331-336

The Dissinilation of Glucose by Chaetomium funicola Cke. G. Semeniuk pages 337-348

Circulation of Hemolymph in the Wings of the Cockroach, Blatella germanica L. Stewart Clare and Oscar E. Tauber pages 349-356

The Chilean Rhopalidae in the Edwyn C. Reed Collection (Hemiptera). H.M. Harris pages 357-362

Fluorescent Bacteria in Dairy Products. E.R. Garrison and B.W. Hammer pages 363-378

A Microscopic Method of Studying Soil Structure. C.Loyal and W. Swanson pages 379-390

A Comparison of the Aluminum-Chloride and the Sulfuric-Acid Methods for Quantitative Estimation of Wool. Lois W. Dale and Rachel Edgar pages 391-398

New Ants from Minnesota, Iowa, and Wisconsin. William F. Buren pages 399-408

Eimeria neoleporis n.sp., Occurring Naturally in the Cottontail and Transmissible to the Tame Rabbit. Jose Candido M. Carvalho pages 409-410