Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 75
r is alsoevident from the followingconsiderations : one-half ofthe earth is in sunshine allof the time ; when the sunis on the celestial equator,it is directly over the equa-tor of the earth, and theillumination extends frompole to pole, as is evidentfrom Figs. 70 and 71, inthe former of which… … ASTRONOMY. 59
Astronomy
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