Sample 3h. CL &23-P & 830-P: dorn/-al Rain, 1,6 cal., 0.9)" equiva- lent, collected 1010, October 31, 1955 to 10390, 21.0 + 1,0 Novemuer 17, 1955. CL €32-P: Srovvy 0.535 cal., 0.27" equivalent, collected 1030, November 17, 1955 to 0919, November 21, 1955. 22,3 + 1.0 CL &37-P: 36,0 + h.7 Rain, 0.147 gal., 0.075" equivalent, col- lected 0919, November 21, 1955 to 0920, November 23, 1955.6 37 CL 840-P: Snovy 0.122 s2al., 0.052" equivalent, collected 0920, November 23, 1955 to 1055, November 26, 1955. 11.7 + 2.7 36. CL @71-P: 28,6 + 3.h Snow, 0.116 val., 9.059" ecuivalent, collected 1055, Novexber 28, 1955 to 1100, Decem- ber 2, 1955« CL 872-P: Srowy 0.31 galey 0.16" equivalent, collected 1100, December 2, 1955 to 1120, December 5, 19,0 + 1. CL 95:-P: Snow, 0.15 <al., 0.077" eouivalent, collected 1120, December 5, 1955 to O80, December 21, 1955, 53+ 7 19556 i. CL 976-P: Snovry 0,082 val., 9,012" equivalent, collected 0800, December 21, 1955 to 1115, January 16, 1956, WhO + 25 % See discussion, "Test of Rain Collection Tethod," paze 13 of this revort. Insoluble Residue from Chicago Rains l, Insoluble residue from rain, CL 320: 1.82 gal., 0.930" equivalent, collected December 24, 195), to Docerber 27, 1954. The filtered insoluble residue was fused with sodium carbonate before assays Total Sr? activity insoluble residue: <0.6 dpm Total Sr?0 activity in solution: 26 Insoluble residue from rain, CL 407 & hOS: 49.2 + 0.5 dp 8 B. 0.71 gal., 0,36" equivalent, collected February 1€, 1955 to 0900, February 21, 1955. The filtered insoluble residue was fused with sodium carbonate before assay. . NYOO Total Sr?0 activity insoluble residue: 0.7 + Ol dpm Total Sr90 activity in solution: 29.9 + 1.5dpm 3| PR