“Henri Becquerel has verified, by an uncomfortable practical experience, the actuality that the rays of radium have an energetic motion on the pores and skin. Getting carried in his waistcoat pocket for about six hours a little sealed tube containing a few decigrammes of intensely lively radiferous barium chloride, in 10 days’ time a purple mark corresponding to this tube was apparent on the pores and skin the pores and skin peeled off and left a suppurating sore, which did not heal for a thirty day period. Pierre Curie has had the very same practical experience right after exposing his arm for a for a longer period time period to a less lively specimen.”
—Scientific American, August 1901
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