The geography of the heavens, and class book of astronomy: (1849)
Burritt, Elijah H. (Elijah Hinsdale), 1794-1838, Dick, Thomas, 1774-1857. [from old catalog] · New York, Huntington & Savage · leaf 263
of ten pounds,the other of one pound, be connected together by a rodeleven feet long, nicely poised on a centre, and then be throwninto a free rotary motion, the heaviest will move in a circlewith a radius of one foot, and the lightest will describe a cir-cle with a radius of ten feet: the centre… … If there were but one body in the universe, provided itwere of uniform density, the centre of it would be the centreof gravity towards which all the surrounding portions woulduniformly tend, and they would thereby balance each other.Thus the centre of gravity, and the body itself, would for-ever…
Constellations · Stars
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