Howe, Herbert A. (Herbert Alonzo), 1858-1926 · Meadville, Penna., Flood and Vincent · leaf 252
ilarcomposition, we could not see the polar caps and otherprominent features so distinctly. The color of the capswould be altered from white to a reddish tint, since wealways see them obliquely through quite a thickness ofatmosphere. Furthermore the spectrum of Mars shouldcontain strong absorption… … The atmos-phere. Fig. 116.—Canals in August, 1892. atmosphere. But Professor Campbell,* with a largespectroscope attached to the great Lick telescope, foundno evidence of water vapor, and sees no absorptionbands whatever. In his opinion such bands would havebeen evident if the atmosphere of Mars…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
