(Monthly Status Report, April 1951) ~ 8 - Biology & Medicine Instrument Display At the request of the National Bureau of Jtandards, a small instrument diaplay is being prepared. This display will be shown to the Society of American filitary Engineers on the afternoon of May 7 along with other exhibits prepared by Bureau of Standards personnel. Air and Water Monitoring| At the request of the Chief, Radiation Branch, Health and 3afety Division, NYOO, thia section has been engaged during April in continuously collecting particulate matter in the air using a small pump and motor supplied by NYCO, Collection and measurement of rain water activity was also a part of the NYOO request. The results of these tests and the air filters used have been forwarded to NYOO. GPO _____!OFFICE > | SURNAME > DATE > 16—$5741-1