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Continuation of Experiments on the Determination of the Rate of Excretion of Radium Solution Injected Intravenously into Guinea Pigs. page 4. Experiment 8. 38 dyys after the injection one pig was killed and incinerated, weight of ash===15.5 grams. Radium found .30 and -75, nverage===0.725 micrograms. Experiment 9. On March 4th one pig was killed and incinerated, wei_ht of ash 19.4 grans. Radium found -57 and -58, average 0.575 nicrograus H. H. Barker. Physical Laboratory, March 12, 1926.