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OCR Page 1 of 4
Continuation of Experiments on the Determination of the Rate of Excretion of Radium Solution Injected Intravenously into Guinea Pigs. page 2. Experimenn 4. 4 days after the injection one pig was killed and incinerated, weight of ash, 16.80 grams. Radium found 168 and 1.82, average 1.75 micrograms. Experiment 5. 7 days after the injection one pig was killed and incinerated, weight of ash, 17.16 grams. Radium found 1.35 and 1.30, average 1.32 micro rains. H. H. Barker. Physical Laboratory, January 5, 1926.