From Mr. Aiken's house one has a view of the great wall of mountains that form the western and older--older geologically--end of the island, in which lies the famous Iao Valley, which I have already described. We judge, from the much deeper marks of rain erosion, that this end of the island is vastly older than the butt end upon which Haleakala is situated. Haleakala is eroded comparatively little. On all its huge northern slope there is only one considerable gash or gully, and this is probably not many thousand years old; but the northwestern end of the island is worn and carved in the most striking manner. Looking at it that morning, I compared it to my extended, relaxed hand, the northern end being gashed and grooved like the sunken spaces between the fingers, while the southwest end, not more than ten miles distant, was only slightly grooved and more like the solid wrist and back hand. All the rains brought by the northeast trades fall upon the northeast end of the islands. The mountain-peaks on the end hold the clouds and strip them dry, so that little or no rain falls upon the south and southwest sides. This is true of all the islands. One end of each is arid and barren, while the other is wet and verdant. One of the smaller islands, Kahoolawe, I believe, dominated by Maui on the northeast, is said to be drying up and blowing away by inches. What a spell the mountains do lay upon the clouds everywhere,--the robber mountains,--in these islands exacting the last drop of water of all the ocean-born vapors that pass over them! On the northeast side of the Lahaina district there are valleys four or five thousand feet deep; on the southwest side there are no valleys worth mentioning. The difference in this respect was forcibly brought home to me when, later in the day, we made an automobile trip from Wailuku to Lahaina on the southwest side; in going less than twenty miles we quickly passed from the region of verdant valleys and mountain-slopes into a hard, raw, barren, unweathered region, where there was no soil, and where the rocks looked as crude and forbidding as they must have looked the day they flowed out from the depths as molten lava. In outline the island of Maui suggests a truncated statue, the west end representing the head, very old and wrinkled and grooved by time and trouble, the peninsula the well-proportioned neck, and broad-breasted Haleakala forming the trunk. What a torso it is, fire-born and basking there in the tropic seas!