An introduction to astronomy : designed as a text book for the students of Yale College (1846)
Olmsted, Denison, 1791-1859, Yale College (1718-1887) · New York : Collins, Brother & Co. · leaf 94
en-sity. According to Dr. Hutton, this is to that of water as 9 to 2;but later and more accurate estimates have made the specificgravity of the earth as stated above. But this density is nearlydouble the average density of the materials that compose the ex-terior crust of the earth, showing a great… … » Daily, Ast. Tables, p. 21. t Robisons Phys. Aat. PART II.—OF THE SOLAR SYSTEM. 142. Having considered the Earth, in its astronomical relations,and the Doctrine of the Sphere, we proceed now to a survey ofthe Solar System, and shall treat successively of the Sun, Moon,Planets, and Comets. CHAPTER…
Astronomy
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