I ’ ay. ate ty of ye this was Sinee © : now Found. amount of2 stventium this mornin mek BA nS sy, juot Ceclasuatiod ab gars Y cannet resist giving you a foy numbers hove, I will try co not went to coniuse you, hovover, with nunbors, « at oo . end so “Athatae you may ntwe te a sontonso all in to summarige At are f id er ° ce Oo tu 4 Ct a Pe de . Still set somo fete of. musticuisriy cot of data waldeh we hava that ag. o 7 way ge cel . ao ms ) Jae has a bearins on the anmcunts of netivity fovnd in cnvironmont and sucecssive steers alont the gocd chrin showing hoy tho activaty is propcgated, the bine avd here, YL will wedte thine numbors cot on Chseuved strontium, 99. I should say this js for sanplecs taken in the Chisaso ovon in Sentombor of 1955, Wath respect to rain, tho averarzc valne--disinieosrations por minute per sallien--those boinc 9 collioens, the minimum 2 and _ the maxinem valvo 45 DPM por sallon. (Chall: demonstration) Tay water at the same tine in Cnicaga, a value ef 0.4--just cno Soli in that arvana, 3535 disintecrations ror minute por squar? Soot, thore being 12 samvles ranging fom 100 to 555 disintezro- tions per minute pow square. Another way of expressine it is in terms of the ratio of strontivna activity to available calcium in tho soil. As vou have heard, there is a corrolation, and 2 will work with that in tho Bursequont part of tha ehnain, If one divides this actiyrhty by The amount of tho available calcinn in the sail, it works out at