Lowell, Percival, 1855-1916 · New York, The Macmillan Company · leaf 222
edthe old life to make possible the new. So soon as thecloud envelope was pierced, both the Earths own heatescaped and the Suns rays were permitted to come in. It is not surprising that under such changed condi-tions development itself should have changed, too. In182 A PLANETS HISTORY 183 fact, the… … Earth as seen from above — Photographed by Dr. Lowell at amaltitude of 5500 feet. and because, too, of the gradual nature of its proces-sional change. We can recall only De Lapparent ashaving particularly signalled it; although not only inits cause, but for its effects, it should have delimitedtwo…
Cosmogony
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