A Technique for Aeration of Sterile Liquid Culture Medium.

Visibility of the Deer Fly in Flight: Elek Ludvigh...... 176 Production of Yellow Bean Mosaic in Beans by Virus From Mottled Gladiolus: F. P. McWhorter, Lytton Boyle, and B. F. Dana ........................... 177 Production and Treatment of Hepatitis With Focal Necrosis of the Liver in White Mice: Paul Engel. 178 Forty-Five Years of Continuous Cropping With Lima Beans: Francis L. Smith, A. H. Holland, and John H. MacGillivray ..................................... 179 Role of Axis Cylinder in Transport of Tetanus Toxin: Paul G. Roofe ................................... 180 Therapy of Experimental Tsutsugamushi Disease (Scrub Typhus): W. F. McLimans and C. W. Grant.. 181 Insecticidal Action of 1-Trichloro-2,2-Bis(p-Bromophenyl) Ethane (Colorado 9): George M. List and Merle G. Payne ................................ 182 Lesions of the Pancreatic Islets Produced in Cats by Administration of Glucose: F. C. Dohan and F. D. W. Lukens ........................................ 183