Survey of Compounds Which Have Been Tested for Carcinogenic Activity.
—Supplement I to "Survey of Compounds Which Have Been Tested for Carcinogenic Activity" is now available. The publication lists 981 compounds which were tested during the period 1948 through 1953. Data were collected and classified by Prof. Philippe Shubik, of the Chicago Medical School, and Dr. Jonathan Hartwell of the National Cancer Institute. Of the total number tested, 779 are reported for the first time in these tests. Copies of the new publication are available from the Superintendent of Documents, U. S. Government Printing Office, Washington 25, I). C. at $3.50 each.
World Congress of Gastroenterology.
—The program for the scientific session of the World Congress of Gastroenterology is now being fully developed, and the following are the participants in the five main symposia:Peptic Ulcer: R. Boller (Austria), J. De La Vega (Mexico), F. Avery Jones (Great Britain),