Meteorological Cycles

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THE following observation may possess some interest in connection with the subject of recurring meteorological cycles It is found at the conclusion of Mr. Consul Wallis's report on the trade and commerce of Costa Rica for 1867, dated June 1, 1868 (Parliamentary Papers for 1868–69, vol. lix. p. 520):—“In the state of the public health there is a marked and satisfactory improvement to report. No reason can be assigned here for the large number of epidemic disorders which have afflicted this country for the last ten years and since the visitation of the cholera, nor for the improvement which took place in the eleventh year.”

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G., R. Meteorological Cycles. Nature 7, 262 (1873) doi:10.1038/007262f0

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