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Harper's Encyclopedia of United States History (ed. Benson Lossing) 6 0 Browse Search
Cambridge History of American Literature: volume 3 (ed. Trent, William Peterfield, 1862-1939., Erskine, John, 1879-1951., Sherman, Stuart Pratt, 1881-1926., Van Doren, Carl, 1885-1950.) 6 0 Browse Search
The Cambridge of eighteen hundred and ninety-six: a picture of the city and its industries fifty years after its incorporation (ed. Arthur Gilman) 3 1 Browse Search
Cambridge sketches (ed. Estelle M. H. Merrill) 1 1 Browse Search
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Browsing named entities in Cambridge sketches (ed. Estelle M. H. Merrill). You can also browse the collection for Simon Newcomb or search for Simon Newcomb in all documents.

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Cambridge sketches (ed. Estelle M. H. Merrill), chapter 11 (search)
strument. It is a ponderous mass, and we question whether so great a weight can be controlled conveniently; but we find that it moves at a touch. There are certain difficulties in the use of so large a telescope, even if it is thus easily handled. In a large telescope, the apparent motion of the stars is so magnified that those at any distance from the pole seem fairly to rush across the field of view. Add to this the fact that the field of a large telescope is very small, and Professor Simon Newcomb may be understood when he says that with a telescope and nothing else one might spend a whole winter evening looking for Sirius, and on finding him, lose him at once and irrevocably. This difficulty of finding and keeping stars is obviated by the equatorial mounting, as well as by the finders, telescopes of low power and large field attached to the tube. \When a star is found, the instrument can be clamped so that it can be moved only in one direction — that of the star's apparent