Lowell, Percival, 1855-1916 · New York, The Macmillan Company · leaf 134
assumed under them are mechanically regular. Theyare the visible expression of gravitation, and so delightthe brain while they satisfy the eye. It is to appreciation of the detail visible on Jupitersdisk that modern advance in the study of the planetis indebted. Examination has shown its featuresto… … Drawing of Jupiter by Dr. Lowell. April 12, 1907. 104 THE EVOLUTION OF WORLDS long ago, is that the planets disk is noticeably bandedby dark belts. Two characteristics of these beltsare important. One is that they exhibit a regularsecular progression with the lapse of years, thesouth tropical belt…
Cosmogony
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