Abstract
American Journal of Science and Arts, May.—Some experiments in cross-breeding plants of the same variety are here described by Prof. Beal, having been suggested by Darwin's book. The plants were Indian corn and black wax beans.—Prof. Young records observations of the spectrum of Brorsen's comet made on April 1 and 2. He is quite positive that the middle band of the spectrum now coincides sensibly (to a one-prism spectroscope) with the green band of the hydrocarbon spectrum.—Dr. Southworth demonstrates this theorem: If a hydrated salt be dissolved in a given volume of water, the volume of the solution will exceed the original volume of the water by a bulk equal to the bulk of saline water contained in the salt dissolved.—The first portion of a paper by Prof. Norton, on the force of effective molecular action, appears in this number, and the remaining papers deal mostly with geological subjects of more local interest, the Fox Hills Group of Colorado, the Hudson River age of the Taconic schists, the Wappinger Valley limestone of Dutchess County, N.Y., the Huronian series of Northern Wisconsin, the mineral locality in Fairfield County, Connecticut, &c.—Mr. Peters gives observations on the planet he discovered on March 21.
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Scientific Serials . Nature 20, 136 (1879). https://doi.org/10.1038/020136a0
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DOI: https://doi.org/10.1038/020136a0