Glacier meadows are usually longer-lived than other mountain parks. In favorable places they sometimes endure for centuries. Commonly they are slowly replaced by the extending forest. The peaty, turfy growth which covers them is of fine matted roots, almost free of earthy or mineral matter, and often is a saturated mattress several feet in thickness. The water-level is usually at the surface, but during an extremely dry time it may sink several inches or even a few feet. If fires run during a dry period of this kind, the fire will burn to water-level. The ashes of this fire, together with the mineral matter which it concentrates, commonly form a soil-bed which promptly produces trees. Sometimes, however, grass returns. Thus, while fire brings forth many meadows in the forest, it sometimes is the end of one evolved from glacial action. A landslip often plunges a peninsula of soil out upon a glacial meadow. This is usually captured by trees in a year or two. These parks make ideal camping-places,--wild, beautiful, and alluring in every season. I have enjoyed them when they were white with snow, mysterious with cloud and mist, romantic with moonlight, and knee-deep in the floral wealth of June. Often I have burst out upon a sunny meadow hidden away in the solitude of the forest. As it lies silent in the sunshine, butterflies with beautifully colored wings circle lightly above its brilliant masses of flowers. Here bears prowl, deer feed, and birds assemble in such numbers that the park appears to be their social centre. In these wild gardens the matchless solitaire is found. Often he sings from the top of a spruce and accompanies his song by darting off or upward on happy wings, returning and darting again, singing all the time as if enchanted. Among the hundreds of these happy resting-grounds in which I have camped, one in the San Juan Mountains has left me the most memories. I came there one evening during a severe gale. The wind roared and thundered as impressively as breakers on a rock-bound shore. By midnight the storm ceased, and the tall trees stood as quietly as if content to rest after their vigorous exercise in the friendly wrestling-match with the wind. The spruces had become towering folded flags of fluffy black. After the gale the sky was luminous with crowding stars. I lingered in the centre of the opening to watch them. The heavens appeared to be made of many star-filled skies, one behind the other. The farthest one was very remote, while the closest seemed strangely near me, just above the tops of the trees.