What, however, was beyond denial was, that if
the polar ice and snow were not so purely and distinctly white as they
appear at a distance upon Earth, they were yet to a great extent
devoid of the yellow tinge that preponderated everywhere else. The
most that could be said was, that whereas on Earth the snow is of that
white which we consider absolute, and call, as such, snow-white, but
which really has in it a very slight preponderance of blue, upon Mars
the polar caps are rather cream-white, or of that white, so common in
our flowers, which has in it an equally slight tinge of yellow. On the
shore, or about twenty miles from the shore of the principal sea to
the southward of the equator, and but a few degrees from the equator
itself, I perceived at last a point which appeared peculiarly suitable
for my descent. A very long range of mountains, apparently having an
average height of about 14,000 feet, with some peaks of probably twice
or three times that altitude, stretched for several hundred miles
along the coast, leaving, however, between it and the actual
shore-line an alluvial plain of some twenty to fifty miles across.
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