hy); Sunshine Units Sample be a CL 1040-P: Beltsville #5511U6B, 10,22 g oxalate, 17.8 + 1,0 6.8h g oxide, h.c9 g Ca. Interlaboratory check sample, Tifton, Ceorgia, November 2, 1955, electrodialysis extraction of kh lbs, soil, O-4" depth. ae CL 10h1-P: Beltsville #551523,, 0.694 2 oxalate, 0.26 g oxide, 0,185 ¢ Ca, be 3e Ce CL l0h2: Beltsville #551523B, 0.59 g oxalate, 0.22 g oxide, 0.15 ¢ Ca. Cl.1127: Brawley, California, Beltsville #56316, collected Januar; 5, 1956, electrodialysis extraction of Ibs, soil, 0-6" depth, 16,56 g oxalate, 6.35 g oxide, 45h g Ca. 16h, + 12 178.2 + 7.1 “0,8 Foreign, Northern Hemisnhere 1. CL 1055: Eneland, Beltsville #514753, obtained by Dr. L. Alexander in July 195h, extracted by fusion of a 100 pram subsanmle of a li 1b, electro- dia’ yzed soil sample, O-3" depth, 4.15 g oxalate, 1.59 g oxide, 0.136 g Ca, (1.2 + 0.3 dpm Sr total samle activity.) CL 1095-P: Calcareous, Paris, France, Beltsville #5561, obtained ty Dr, L. Alexander, February 0.69 + 0,05 16, 1955, electrodialysis extraction of lbs. soil, O-h" depth, 29.30 g oxalate, 11.06 g oxide, 7090 g Ca. 3e CL 881: Italy, Leltsville #55772, obtained by Dr. L, Alexander, February 5, 1955, Ni) AC extraction of los. soil, O-)" deoth, 113.1 g oxalate, 16.5h g oxide, 11.5 ¢ Cae he CL 882: Turkey, Beltsville /'55677, obtained by Dr. L, Alexander, February 7, 1955, WH) aC extrac- 1.6 + 0.05 1.28 + 0.07 tion of h los. soil, O-l" depth, hL.6 g oxalate, 16.95 ¢ oxide, 12.0 ¢ Ca. Se CL 883: Turkey, Beltsville #55128, obtained by Dr. L, Alexander, February 2€, 195), NH) AC extrac- tion of 4 lbs, soil, 0-2" depth, 42.0 g oxalate, 16.31 g oxide, 11.5 2 Ca, ° CL 68h: Turkey, Beltsville 7'551285, obtained by Dr. L, Alexander, Feoruary 26, 1954, NAy.c extrac- 2ehh + 0.13 NYOY 1.52 + 0.05 tion of k los, soil, 0-2" depth, 47.5 @ oxalate, 18,28 g¢ oxide, 12.8 ¢ Ca, 15 7b.