Abstract
DURING the course of a series of measurements of the radium content of natural waters and coal in New South Wales1, we made some analyses of tobacco. Two packets of Australian-made cigarettes and one 2 oz. tin of pipe tobacco (Australian made, English blend) were taken at random. The ash was fused with alkali carbonate, the mixture was neutralized and then silica was removed by filtration. The filtrate was then analysed for radium by Goldin's radiochemical method2.
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