As we journey on delightedly through these glades, rising, terrace after terrace, we can read the history of the mountain in the rock beneath our feet and the expanding plains and hills below. All within the ancient amphitheatre is volcanic. There are four main summits, a central dome, vast, symmetrical, majestic, pure-white against the blue-black sky of its unsullied height. The three other peaks are broken crags of basalt, leaning as for support against the mighty mass at the centre. Around the snow-line of the mountain many minor cones have been blown up. These have the most gaudy and brilliant colouring, mainly yellow and vermilion. One on the south-east is especially noticeable. From a deep canyon it rises two thousand feet as steep as broken scoriae can lie. The main part is bright red, surmounted by a circular cliff of black rock. Probably the old funnel of the crater became filled with black rock, which, cooling, formed a solid core. The older material around it having crumbled away, it remains a solid shaft. But fire has not wrought all the wonders of the mighty peak. Ice has been most active. The mountain was once completely girdled with glaciers. Rocks are scratched and grooved five miles below the present snow-line. The ridges are strewn with planed rocks and glacial shavings and coarse sand. Some of the monticules on the flanks of the mountain have been partially cut away. Many have been entirely obliterated. But the ice has now greatly receded. Instead of a complete enswathement of ice there are some six or seven distinct glaciers, separated by sharp ridges, while the region formerly the chief home of the ice is now a series of Alpine meadows. Like most of the snow peaks, Mt. Adams is rudely terraced, and the terraces are separated into compartments by ridges, forming scores and hundreds of glades and meads. In some of these are circular ponds, from a few square rods to several acres in area. These lakes are found by the hundred around the mountain and in the region north of it. They are one of the charms and wonders of the country. About most of them tall grass crowds to the very edge of the water. Scattered trees diversify the scene. Throughout these glades flow innumerable streams, descending from level to level in picturesque cascades, and composed of water so cold and sparkling that the very memory of it cools the after thirst. Sometimes the tough turf grows clear over, making a verdant tunnel through which "the tinkling waters slip." Here and there streams spout full-grown from frowning precipices. [Illustration: Birch-Tree Channel; Upper Columbia, Near Golden, B. C. Photo. by C. F. Yates, Golden.]