Lowell, Percival, 1855-1916 · New York, The Macmillan company · leaf 235
Marsis such that its present eccentricity is greater thanwhat the Earth ever can have had, and the wintersolstice of the planets southern hemisphere fallswithin 23° of its aphelion point. We have then theconditions for glaciation if these are the astronomic 198 THE EVOLUTION OF WORLDS ones… … Mars.north polar cap. At maximum full extent of whiteAt minimum inner circle SOUTH POLAR CAP. At maximum whiteAt minimum nothing edge of the Martian polar caps exceeding in some re-spects what we know of our own. The accompanyingdiagrams exhibit the state of things at a glance, themaximum and…
Cosmogony
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Catalog] (1902)](https://img.insideoutlibrary.com/img/200/ia-catalog00geob-30-96.webp)
