Olmsted, Denison, 1791-1859. [from old catalog] · New York, R. B. Collins · leaf 82
y thedifference of latitude of the two stations. But the ap-parent zenith distances as determined by the plumb lineare IE and IG. The deviation towards the mountainon each side exceeded 7. The attraction of the moun-tain being observed on both sides of it, and its mass be-ing computed from a number… … rections, tnese data, when compared with the knownattraction and magnitude of the earth, led to a knowl-edge of its mean density. According to Dr. Huttonthis is to that of water as 9 to 2 ; but later and more ac-curate estimates have made the specific gravity of theearth as stated above. But this…
Astronomy
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