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A compendious system of astronomy, in a course of familiar lectures; in which the principles of that science are clearly elucidated, so as to be intelligible to those who have not studied the mathematics. Also trigonometrical and celestial problems, with a key to the ephemeris, and a vocabulary of the terms of science used in the lectures; which latter are explained agreeably to their application in them (1797)

Bryan, Margaret, active 1815 · London, Printed for the author and sold by Leigh and Sotheby and G. Kearsley · leaf 312

An illustration from A compendious system of astronomy, in a course of familiar lectures; in which the principles of that science are clearly elucidated, so as to be intelligible to those who have not studied the mathematics. Also trigonometrical and celestial problems, with a key to the ephemeris, and a vocabulary of the terms of science used in the lectures; which latter are explained agreeably to their application in them, 1797, leaf 312
to answer to those in the heavens bymeans of a small compass box, allowing for the variation. In ob-serving the height of a heavenly body above the horizon, direct thesights to the object, and notice the degree cut by the plumb lineon the plane of the quadrant; then, as are the number of…

Astronomy

Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.

More pictures from A compendious system of astronomy, in a course of familiar lectures; in which the principles of that science are clearly elucidated, so as to be intelligible to those who have not studied the mathematics. Also trigonometrical and celestial problems, with a key to the ephemeris, and a vocabulary of the terms of science used in the lectures; which latter are explained agreeably to their application in them

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