"Those shadows must be cast to westward by the enormous peaks of the Andes, and the dark greenish surface they reach toward must be the Pacific Ocean."
Then he consulted his globe while I looked. "The first two to come into view," he said, "would be the two great peaks in Bolivia, over twenty-one thousand feet high."
"There are two of them together," I said, "and now others are rapidly coming into view. There are five more scattered unequally, and then, lower down, three near together."
"Then there is not the slightest doubt that we see the Lower Andes," he said. "These last you mention are scattered just as you say along the border between Chili and Argentina, and the group of three are near Valparaiso, the peak of Aconcagua being the tallest. But watch now for the group in Ecuador, about midway between the top and bottom of the crescent. There are four very large peaks and numerous smaller ones."
"The middle all looks bright yet, like land, with no shadows or greenish spots. But a queer thing is happening lower down, where the shadows have ceased lengthening and are now fading. There are several fine points of light just beyond the outer edge of the crescent. They are mere bright specks, but gradually they join with the surface, making a rough toothed edge."
"Ah, that phenomenon has been observed upon the Moon," said he. "That is the sun shining on the snow-capped peaks first, and then, when the diminutive outline of the mountain comes into view, it looks like a tooth."
"The same is happening all down the coast," I reported. "Now I see it on the lower group of three."
"Give me the instrument," demanded the doctor. "That can be nothing but the west coast of South America, and if that be the case, the whole thing will be repeated for the tall group in Ecuador, dominated by Chimborazo."
As I surrendered the telescope to him, the whole lower part of the crescent was dark, but with regular edges. Only in the middle, which should have been about the Equator, and in the upper part, was there the bright lustre of land reflection. He watched for fully half an hour before observing anything remarkable. At last he exclaimed,—
"Now they are beginning! Five streaks near together and just at the Equator. They are almost equidistant from each other, and the next to the lowest one is the longest. Now the top one begins to fade! Yes, and a point of light has appeared detached from the outer edge, and now another and another! They are growing inward toward the surface. Now they are all connected like five saw teeth; the bottom one is the shortest, and that next very high one is old Chimborazo."