A Report of Some Recent Studies on Species of Gasterophilus Occuring in Horses in the United States. R.W. Wells and E.F. Knipling pages 181-204

Fractionation of Oat Hull Lignin. Wilbur S. Claus and Ralph M. Hixon pages 205-210

Biological Assay of Feeding Stuffs in a basal Ration for Coccidium-growth-promoting Substance II. Barley, Rye, Wheat Bran, Wheat Flour Middlings, ZSoy Bean Meal. Elery R. Becker and Russel C. Derbyshire pages 211-216

The Development of Vascular Tissues and the Initiation of the Inflorescence in Holcus sorghum. Chao-Hsi Chen pages 217-226

Notes on North American Spiders of the Families Gnaphosidea, Anypaenidae, and Clubionidae. Irving Fox pages 227-244

Behavior of Butyric Acid-butyl Alcohol Bactria Toward Acetylmethylcarbinol and Asparagin. R.W. Brown, G.L. Stahly, and C.H. Werkman pages 245-252

An Interesting texas Cucurbit, Cucurbita pepo, L. var. ovifera Alef. (C. texana, Gray). A.T. Erwin pages 253-262

Zeros of the Legendre Polynomials. E.R. Smith pages 263-274

Dissimilation of Intermediary Compounds in the Butyl-isopropyl Alcohol Fermentation. O.L. osburn, R.W. Brown and C.H. Werkman pages 275-284