For March, 17 stations ere rerortec3 for April, 473 for May, 313 for June, 44; for July, 35. It will be noted that only six locations submitted enough sample for EASL tc receive aliquots for all five months. These were West Newton'4), Charleston, Tallehassee, Jacksonville, Nantucket, . and Albanye Averaged data and ranges for each month are shovm in Table 2e Table 2. Summary of fallout data for rain water collections from March through July, 1956, . 90 (nofri2/no) rotniean) Sampling Range 5x89/o0 _ Average ; Month Average Range Average March 22 59 = 5k le2 025 = 209 April 29 J3el = iyo Lol Oe3k = 209 9e7 0.0 = 23 May 19 k.3 = 110 106 Oe2l = Fok 963 000 = 330 June 20 bl - 78 100 0222 = 346 720 000-22 July bh 6.3 - 170 1.5 02 2 = 306 22 29 Range Tea 66 / | OO ~ 67 DISCUSSION The data presents several possible moces of analysis. Fallout debris in rain water can be dated; its activity can be correlated with the amount of rainfall; the relationship between total fallout and rain water activity can be established. It is impossible to predict that there will be correlation between activity and amount of rainfall over the entire sampling network because the amount of activity in the atmosphere is not necessarily constant, but varies witn local conditions. However, it is possible that better correlation miz.t bo irvai oy investigatirg a fragcion of the sampling network over which conditicrs are more likely to be uniform, | :