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 144
is the valleynear the centre of the range. It is more than seventy-fivemiles long, and about six miles wide at the broadest part.When examined under favorable circumstances, with a highmagnifying power, it is seen to be a vast flat-bottomedvalley, bordered by gigantic mountains, some of whichattain… … Fig. 142. and shown in Fig. 142. Its height exceeds eight thousandfeet, and it is about three times as long at the base as it isbroad. The summit is cleft into three peaks, as is shownby the three-peaked shadow it casts on the plain. 122. Bright Rays. — About the time of full moon, witha telescope…
Astronomy
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