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TURNER, HERBERT HALL. Halley's Comet.
London:, Royal Institution,, 1910.. Paperback. A Fine Offprint in Self Wrappers from the Royal Institution of Great Britain, Weekly Evening Meeting, Friday, February 18, 1910. 8vo. 12 Pp. Fine, A lecture presented at the weekly evening meeting of Feb. 18, 1910. Discusses Halley's researches and prediction. Cowell and Crommelin's orbit calculations searches for records of early sightings, and the future of the comet. Turner makes the interesting point that although the comet does not go very far beyond the orbit of Neptune, "by the peculiarities of elliptic motion under gravity it spends half it's time doing the small arc which lies beyond Neptune's orbit. (Ruth S. Freitag "Halley's Comet A Bibliography").
Offered for US$ 30.00 by: By The Book, LC - Book number: 41129