Abstract
WHAT an age of contradictions this is ! a statement is put forth one day by some one who has apparently every reason to be an authority, and it is contradicted the next day by some one else who also appears to have good ground to support his contradiction.
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ALLCHIN, J. The Decrease of Swallows and Martins. Nature 59, 271 (1899). https://doi.org/10.1038/059271b0
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DOI: https://doi.org/10.1038/059271b0
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