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A treatise on surveying and navigation: uniting the theoretical, the practical, and the educational features of these subjects (1852)

Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst · leaf 227

An illustration from A treatise on surveying and navigation: uniting the theoretical, the practical, and the educational features of these subjects, 1852, leaf 227
There are nine lunar stars, Arietis, Aldebaran, Pollax, Regulus, Spica,Antares, Aquilae, Fomalhaut, and Pegasi. + Many navigators, both old and young, direct all their efforts to knowing howto do, without attempting to comprehend the reasons for so doing ; and this theworld calls practical, — a… … 222 NAVIGATION. positions, the moon is depressed by parallax, and appears nearer tothose stars that are below her, and further from those stars that areabove her, than would appear from the center of the earth. There-fore, the apparent altitudes of the two objects, must be taken at thesame time…

Surveying · Navigation

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