Lowell, Percival, 1855-1916 · New York, The Macmillan company · leaf 76
in the spectrum of Neptune 130 lines and bands caneasily be counted between the wave-lengths 4600 /x/x,7600 /x/x. Of these 31 belong to the planet, whichcompares with 6 found by Huggins, 10 by Vogel, and9 by Keeler in the part of its spectrum they were ableto obtain. The result was a revelation.… … THE INITIAL CATASTROPHE 53 spectrum of the atmosphere of the Earth, but are dueto the planets own envelopes. But this was only thestarting-point of their disclosures. When in this man-ner he had taken the color signatures of Jupiter, Saturn,Uranus, and Neptune, an orderly sequence in…
Cosmogony
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