Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 333
Fig. 107. — Drawings of Mars in 1894 byBarnard at the Lick Observatory. 286 AN INTRODUCTION TO ASTRONOMY [ch. ix, 174 a number of persons make drawings of what they could seeon a disk covered with irregular marks and held slightlybeyond the limits of distinct vision, strikingly confirm… … Fig. 108. — Photograph of Mars (the 60-inch reflector of the Mt. WilsonSolar Observatory). to the theory of the objective existence of canals on Marsan unanswerable confutation. Other astronomers hold thatsuch a network of markings on a planet whose surface iscertainly somewhat uneven is inherently…
Astronomy
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