Ogden Johnson attended the annual meeting of the Animal Care Society held in Chicago November 28-3u, Wright Langham visited the Organic Chemistry Department at Iowa State College to discuss with Dr, Henry Gilman progress he has made on his contract with the Division of Biology and Medicine of the AEC. He also went to Washingt to serve on the DBM Screening and Planning Committee for biomedical projects ir bomb test operations. Dr, Herald Rossi spent 4 days in H-4 working with the Biophysics Sectic on the testing and calibration of Tissue Equivalent Ion Chambers to be used in Operatian Teapot. Donald Ott and F. Newton Hayes attended the Southwest Regional ACS meet in Fort Worth in December. I. Syntheses and Spectra." tillators. Donald Ott presented "Organic Solution Seintillate: F. Newton Hayes presented "Organic Solution ScinClassification II. Properties and Appl death changed counting of Ct 3 and H. By Lhirebaoo ZL. BOR.D. AL, Cem Dr. L. R. Lipsky of Yale Wisited ith 1 to dy the U.S. res . a << Aégarding scintiilat; Co ee en (Late) CL Y/78 Cie’ (Sidntture of Person maid Mr. Robert Corsbie visited with W. Langham andPayneHalves eidatwss plans for Project 39.7, Operation Teapot. Vernon Kerr joined the Organic Chemistry Section of H-4 during Decembe: LA-1728 was distributed December 9. This was by F. Newton Hayes and i: entitled "Photomultiplier Testing for Low Energy Counters." LA-1837 was distributed December 9. This was by Donald G. Ott and F. Newton Hayes and is entitled "Argon Treatment of Liquid Scintillators to Eliminate Oxygen Quenching." B. Work Completed: 1. Results of Beta Rav Determinations on Urines from Personnel Exnose to the Fallout on March 2, 1954,(Written by Gordon Gould; work done by Molly Macee, Jean Satine, Helen Miller, Farry Foreman, Ted Trujillo, Louise Larkins, const)noe 4 7 é wet