we me Se eeONRg ee 20 T T T Ay T Ar —_ — ba a E 7 _ . a 4 7 oa -_ = — ba 4 = (Of > 2 z fe Le, ~ _ - of 0 mon ‘ on 2 n,n 3 5 . 2 4 8 C/M (x 1000) (a) or Ww I r T 7 . o _ ~ =2 GEoF_ Ae 0 l 4 || I 2 3 a 7:= Th nn 4 4 5 LOG OF LOG OF C/M (x 1G) (b) — M | gE - « 10 — s ~ z ; = ~ a — be oE_nI 3 nq a _ I 4 [cout C/M (x 1000) 5 COS 6 era yang EONS9eRe (Cc) Fig, 3.1—~ Histograms showing frequency distributions of radioactivity counts of Engebi beach sand, (a) Counts for 100 small (6-mg) samples. (b) Logarithms of logarithms of the same counts, (c) Counts for 100 large (3000-mg) samples. 21 ANUS