The Action of a Transverse Electrostatic Field Upon Flames. J.K. McNeely and E.W. Schilling pages 1-10

The Introduction of Furyl-Alkyl Groups by Means of Sulfonic Esters. Henry Gilman and Robert E. Brown pages 11-16

The Propionic Acid Bacteria. I. Classification and Nomenclature C.H. Werkman and Sara E. Kendall pages 17-32

The Literature of Alkylated Carbohydrates. V. Mono- and Di-Alkylated Glucose Derivatives. Harold W. Coles pages 33-42

The Literature of Alkylated Carbohydrates. VI. Tri-, Tetra-, and Penta-Alkylated Glucose Derivatives. Harold W. Coles pages 43-64

Studies on Sulfur Oxidation. Dionisio I. Aquino pages 65-88

Observations on Bacillus calidolactis. R.V. Hussong and B.W. Hammer pages 89-94

The Reaction of Cucumbers to Types of Mosaic. R.H. Porter pages 95-130

Eimeria separata, a New Species of Coccidium from the Norway Rat (Epemys norvegicus). Elery R. Becker and Phoebe R. Hall page 131

Preliminary Experiments With Aphids as Vectors of Yellow Dwarf. C.J.Drake, H.D. Tate, and H.M. Harris pages 247-250

The Accuracy of the Dilution Method of Estimating the Density of a Population of Micro-organisms. Edward S. Allen pages 251-262

New and Rare North American Collembola. Harlow B. Mills pages 263-276

Nectaries of Capsicum. J.N. Martin, A.T. Erwin and C.C. Lounsberry pages 277-286

The Relative Toxicity of Pyridine and Nicotine in the Gaseous Condition to Tribolium confusum Duval. Charles H. Richardson and Louise Haas pages 287-298

Quantitative, Biometric and Host-Parasite Studies on Eimeria miyairii and Eimeria separata in Rats. E.R. Becker, Phoebe Hall, and Anna Hager pages 299-316

A Discussion of Synonymy in the Nomenclature of Certain Insect

Flagellates, With the Description of a New Flagellate from the Larvae of Ligyrodes relictus Say (Coleoptera-Scarabaeidae). Bernard V. Travis pages 317-325

On the Coagulation of Blood from the Cockroach, Periplaneta orientalis (Linn.), With Special Reference to Blood Smears. J. Franklin Yeager, W. Earl Shull, and Milton D. Farrar pages 325-356

First Supplementary List of Parasitic Fungi from Iowa. Joseph C. Gilman pages 357-366

A Study of Caramel Color. John B. Shumaker with J.H. Buchanan pages 367-380

Conjugated Systems in Furan Types. Henry Gilman and Joseph B. Dickey pages 381-388

The Stabilizing Effect of Nuclear Nitro Groups in Furan Types. 5-Nitro-2-Furfuryl Chloride and 5-Nitro-2-Furfuryl Methyl Ether. Henry Gilman and Robert P. Burner pages 389-394

The Sulfur and Nitrogen of Wool. Eleanor Winton and Rachel Edgar pages 395-406

Abstracts of Doctoral Theses pages 407-478

Hydrogenation of Furfural. F.E. Brown, Henry Gilman, and Ralph L. Van Peursem pages 133-136

The Physiological Properties of Some Furan Derivatives. Henry Gilman, A.P. Hewlett, and J.B. Dickey pages 137-142

Certain Chemical and Morphologic Phases of the Blood of Normal and Cholera-infected Swine. I. The Concentration of Certain Chemical Constituents. E.A. Hewitt pages 143-226

Certain Chemical and Morphologic Phases of the Blood of Normal and Cholera-infected Swine. II. Certain Morphologic Phases. W.T. Oglesby, E.A. Hewitt, and H.D. Bergman pages 227-346