Abstract
THE American Meteorological Journal for December 1890 contains an account, by H. J. Cox, of a waterspout which occurred at Newhaven, Connecticut, on October 19 last, between two thunderstorms about five miles apart. A funnel-shaped cloud rapidly descended, while the water below it rose upward, first about 3 feet, and, when the spout was complete, above 30 feet. The spout was about 300 feet high, and 25 feet in diameter. It moved about two miles in ten minutes, and when it met the thunderstorm it moved back in the opposite direction about a mile.—A summary of Dr. Hann's paper on temperature in anticyclones and cyclones, the subject of which has already been noticed in NATURE.—Observations and studies on Mount Washington, by Prof. Hazen, to determine, by means of the sling hygrometer, the temperature and humidity at each mile by walking down the mountain and up again. The results of sixteen journeys show that in the cases with partly dry air the decrease of temperature with elevation did not differ widely from the theoretical value, but with moist air the theoretical difference per 100 feet was much less than the observed difference.—Cyclones and tornadoes in North America, by J. Brucker. The object of the paper is to show that tornadoes or local air-whirls are analogous to water-whirls, and the subject is illustrated by diagrams.—The cooling of dry and moist air by expansion, by Prof. Marvin. The author refutes Prof. Hazen's objections to the principle that moist or saturated air is warmed by the latent heat set free from that portion of the vapour that is condensed by expansion. Prof. Marvin states, inter alia, that Prof. Hazen's calculations are not made by the proper thermo-dynamic equations, and are incorrect. Prof. Hazen, on the other hand, offers a prize of 100 dollars for the proof of the proposition, that Espy's experiments, when properly interpreted, prove his theory.
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Scientific Serials. Nature 43, 285 (1891). https://doi.org/10.1038/043285b0
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DOI: https://doi.org/10.1038/043285b0