Appendix 3— (Continued) Ref. 53 Month Age at Death Bone District Sr™, uuc/g of Ca Sr, ug/g Ca (a) 54 Dec. Dec. 24 yr Femur Surrey 55 Dec. 9 yr 2yr Femur Femur Sussex Plymouth 1.55 57 Dec. 9 yr Femur Berks 0.27 58 Dec. 56 Dec. 3 yr Femur 0.54 Surrey 0.72 0.32 Dec. 4 mo Tyr Femur Norwich 0.35 60 61 62 63 64 65 66 Feb. Mar. Mar. Mar. Mar. Mar. Apr. Still lyr Still Still 1 day 5 yr 8 yr Femur Femur Femur Femur Femur Femur Femur Carlisle Keswick Carliste Carlisle Carlisle Carlisle Birmingham 0.65 2.3 0.5 0.6 0.4 0.5 0.4 67 68 69 70 May Still Still 1 mo 7 yr 5 mo Femur Femur Femur Femur Femur London London London Birmingham 0.7 71 Apr. Apr. Apr. Apr. Birmingham 180 72 73 May May 13 yr 2yr Femur Femur Liverpool Liverpool 230 180 76 7? 78 79 June gune June June Still Still Still Still Femur Femur Femur Femur London London London London 59 Femur (b) Cambridge 1.35 0.28 1957 74 75 May May 6 mo 6 mo Femur Femur Liverpool Liverpool 0.9 0.3 0.37 0.4 160 160 2.4 1.3 230 0.5 310 0.4 N.B. The 1957 results above are included for completeness but are excluded from the summarized Tables 7 and 8 and from Fig. 7, which ail relate to 1956. sr* activity: (a) estimated by total radiostrontium count. (b) estimated by Y™ count. 228 2.1