When I rose above the surface of this sea the sun was shining upon it. It was a smooth sea; not a breath of wind ruffled it. The top of Long's Peak rose bald and broken above. Climbing to the top of a commanding ridge, I long watched this beautiful expanse of cloud and could scarcely realize that it was steadily flinging multitudes of snowflakes upon slopes and snows below. Though practically stationary, this cloud expanse had some slight movements. These were somewhat akin to those of a huge raft that is becalmed in a quiet harbor. Slowly, easily, and almost imperceptibly the entire mass slid forward along the mountains; it moved but a short distance, paused for some minutes, then slowly slid back a trifle farther than it had advanced. After a brief stop the entire mass, as though anchored in the centre, started to swing in an easy, deliberate rotation; after a few degrees of movement it paused, hesitated, then swung with slow, heavy movement back. In addition to these shifting horizontal motions there was a short vertical one. The entire mass slowly sank and settled two or three hundred feet, then, with scarcely a pause, rose easily to the level from which it sank. Only once did it rise above this level. During all seasons of the year there are oft-recurring periods when the mountains sit in sunshine and all the winds are still. In days of this kind the transcontinental passengers in glass-bottomed airships would have a bird's-eye view of sublime scenes. The purple forests, the embowered, peaceful parks, the drifted snows, the streams that fold and shine through the forests,--all these combine and cover magnificently the billowed and broken distances, while ever floating up from below are the soft, ebbing, and intermittent songs from white water that leaps in glory. Though the summits of the Rocky Mountains are always cool, it is only in rare, brief times that they fall within the frigid spell of Farthest North and become cruelly cold. The climate among these mountain-tops is much milder than people far away imagine. The electrical effects that enliven and sometimes illuminate these summits are peculiar and often highly interesting. Thunderbolts--lightning-strokes--are rare, far less frequent than in most lowland districts. However, when lightning does strike the heights, it appears to have many times the force that is displayed in lowland strokes. My conclusions concerning the infrequency of thunderbolts on these sky-piercing peaks are drawn chiefly from my own experience. I have stood through storms upon more than a score of Rocky Mountain summits that were upward of fourteen thousand feet above the tides. Only one of these peaks was struck; this was Long's Peak, which rises to the height of 14,256 feet above the sea.