Abstract
Memorie della Societa degli Spettroscopisti Italiani, June.—This number contains a very interesting account of the theories of the cause of formation of comets' tails, by Schiaparelli. The author seems to have no doubt that a repulsive force is in action, and that the only two acceptable theories are that the force is due to electricity or the repulsive power of the sun's heat.—Tacchini contributes a note on the polarisation of the zodiacal light, inwhich he corroborates Wright's observations of polarisation, and the presence of reflected sunlight. He also adds position observations of Coggia's comet in June.—Prof. Loren-zoni contributes a paper On some theoretical researches for a manner of rendering the whole of the solar chromosphere visible at once.
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Scientific Serials . Nature 10, 434 (1874). https://doi.org/10.1038/010434a0
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DOI: https://doi.org/10.1038/010434a0