The Bromination of Furyl Methyl Ketone. Ellis V. Brown pages 221-226

The Oxidation of Furan Methyl Groups. Ellis V. Brown pages 227-230

The Availability of Phosphorous in Some Iowa Soils. F.B. Smith P.E. Brown, C.D. Hoover, and H.C. Miller pages 231-246

Migration of Shore Birds at Goose Lake, Hamilton County, Iowa, During the Fall of 1936. Thos. G. Scott and C.A. Sooter pages 247-252

Two Methods for Measuring Egestion Time from Large Insects. B.Thomas Snipes, Oscar E. Tauber, and Harold Gunderson pages 253-258

Temperature Preference of the Firebrat, Thermobia domestica (Packard) (thysanua). J. Alfred Adams pages 259-266

Studies on Brood A June Beetles in Iowa. Floyd Andre pages 267-280

A Flavor Constituent of Blue Cheese (Roquefort Type). B.W. Hammer and H. Wayne Bryant pages 281-286

Dissimulation of Pyruvic Acid by the Propionic Acid Bacteria. H.G. Wood, Carl Ebb, and C.H. Werkman pages 287-293

The Effect of Phosphate Fertilizers on the Reaction of Grundy Silt Loam in Greenhouse Experiments. J.B. Peterson, F.B. Smith, and P.E. Brown pages 293-310

Biological Assay of Feeding Stuffs in a Basal Ration for Coccidium-growth-promoting Substance. I. Procedure, Yellow Corn Meal, Oats, Oat Hulls, Wheat, Linseed Meal, Meat Scrap. Elery R. Becker and Russel C. Derbyshire pages 311-322

Use of a Discriminant Function for Differentiating Soils With Different Azotobacter Populations. Gertrude M. Cox and William P. Martin pages 323-332