Brocklesby, John, 1811-1889. [from old catalog] · New York, Sheldon and company · leaf 28
e ascertained by com-paring them with such as are known. In astronomical investigations we pursue a like course,and begin with determining the size, motions, and jt>r?^of the Earth, with other important particulars that arewithin our reach. We thus obtain fixed standards of 1. Orbit means the… … SOLAR FYSTE.M. EXPLANATORY CHAPTER. 17 measurement, whereby we are enabled to push our in-quiries beyond the earth, and to compute the distances,times, motions, and velocities of many of the bright orbs1that glitter about us, and the extent of the vast spacesthrough which they move. In the study of…
Astronomy
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