Abstract
THE year just ended has been broken by a formidable discontinuity. In the first period our work has followed its usual course; in the second, it has been dominated by the constant thought of national defence.
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Annual Meeting of the Paris Academy of Sciences 1 . Nature 94, 572–573 (1915). https://doi.org/10.1038/094572b0
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DOI: https://doi.org/10.1038/094572b0