129 Since this is one of the most sensitive absorption techniques that is {in use today, and we have discovered discrepancies, we are planning on submitting this discrepanoy to physical review. The percentages are given for two Beta particles emitted from | cesium137 -- they abe .56 MEV and I believe 1,1 MEV and the percentages are 90 per cent and 16 per cent and after purifying this iso- . tope chemically and running many replicas of the same sample, we consistently get the percentages to be €0 and 40 and an energy difference for this Beta for 2/10 MEV (indicating 1,1 on the board), MR. EISENBUD? Thank you very much, up. Well, we have practically caught We will have Mr, LeVine preeents his material on the Central Beta Processing Unit during the laboratory tour which will be given at 1 $30. So, after lunch we will assemble on the fourth floor and we will have a tour during the laboratory sand this afternoon we will go into our fallout portion of our program. (Whereupon a luncheon recess was takene)