Smith, Hamilton Lanphere, 1819-1903. [from old catalog] · Cleveland, M. C. Younglove and company · leaf 87
a space equal to that moved over by the index, and if a star shoulcthappen to be just so many degrees, or parts of a degree, above 84 THE WORLD. the horizon, as the index had been moved, and as shown at a, it … would appear in the quadrant, as in the figure preceding,broughtto the line of the horizon. Now just before noon, on ship-board,the sailor sets the index of his quadrant to about the altitude ofthe sun, and defending the eye by a set of dark glasses, shown atG, page 82 he looks through the eye-hole…
Astronomy · Meteorology · Geology · Paleontology
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