Abstract
IN a note which appeared in NATURE on February 4, 1904, Lord Blythswood announced his observation of the destructive action exerted on cambric by the radiation from radium. Having at our disposal recently twenty milligrams of radium bromide which had, for a, time, nothing better to do, we investigated the progressive decrease of strength of threads exposed to its influence. In order to have examples of both animal and vegetable fibres, we used unspun silk and ordinary bleached cotton thread.
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