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The evolution of worlds (1909)

Lowell, Percival, 1855-1916 · New York, The Macmillan company · leaf 201

An illustration from The evolution of worlds, 1909, leaf 201
Sliphers spectrogram of the dark and light belts re-spectively. For in the spectrum of the dark one we see the distinctiveJovian bands in-tensified as if thelight had trav-ersed a greaterdepth of Jovianair. Its color, acherry red, abetsthe conclusion— that in suchplaces we lookdown into thefiery,… … Photograph of a sun spot — after the late we have protO- M. Tanssen. r 1 • types or this sortof extraterrestrial cyclone in the Sun. His spots areprobably local upsettings of atmospheric equilibrium,using the word atmospheric in the widest possiblesense. Just as our storms are the mildest…

Cosmogony

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