y was held on May 6, says Science. The inky blackness, about a foot in diameter. the end of a spindle, and at one side is a lever. To exhibits included X ray photographs by Messrs. Swin- To describe the wonderful contortions of those two operate the toy this side projecting piece is pulled out.… … oxygen and nitrogen are equably penetrable, and THE DANCERS. veins, they could be made to leave a shadow on the hence they conclude that the absorption has no rela- photographic plate. The Physical Institute at Rome tion to molecular weight or the arrangement of the has performed this experiment.…
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