At 18h. I was within 8000 miles of the surface, and could observe Mars distinctly as a world, and no longer as a star. The colour, so remarkable a feature in his celestial appearance, was almost equally perceptible at this moderate elevation. The seas are not so much blue as grey. Masses of land reflected a light between yellow and orange, indicating, as I thought, that orange must be as much the predominant colour of vegetation as green upon Earth. As I came still lower, and only parts of the disc were visible at once, and these through the side and end windows, this conviction was more and more strongly impressed upon my mind. 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,
