. Le calumet de la solitude, et d'autres légendes poétiques de la frontière. ou les colonnes d'eau et de la longueur de l'periodsof éruption et de repos ; et même ces, comme ci-dessus indiqué, aredoubtless évolue lentement. Bien que la théorie qui précède tient compte de l'apparence d'habitude mani-festations des éruptions du Geyser, déchirant la encore conesand le geyser énorme de hurling de tonnes de roche, comme se sont produits à l'andNew Geysers cratère géant et d'ailleurs, semblent indiquer une occasionaloutburst d'une plus grande puissance. Des explosions de gaz steamor surchauffée, d'égarement de la soupape de sûreté à échapper

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. The calumet of the Coteau, and other poetical legends of the border. column or columns of water and the length of the periodsof eruption and of repose; and even these, as above stated, aredoubtless slowly changing. While the foregoing theory seemingly accounts for the usual mani-festations of geyser eruptions, still the rending of huge geyser conesand the hurling of tons of rock, as have occurred at the Giant andNew Crater Geysers and elsewhere, seem to indicate an occasionaloutburst of some greater power. Explosions of superheated steamor of gas, misplacement of the safety-valve upon escape-vents of in-ternal fires, infernal regions, or other places of pent-up power areoccasionally suggested by phenomena otherwise inexplicable. To the Upper, Lower, and Midway Geyser Basins upon the Fire-Hole Rivers, and others less important upon the shores of the Yel-lowstone, Heart, and Shoshone Lakes, early discovered by others, my own explorations have added the Monument, the Norris, and theTaint-Pool Basins upon the Gibbon or its branches, the Safety-Valve <3^. BEE-HIVE GEYSER. 258 GUIDE-BOOK OF THE PARK. in the Grand Canon of the Yellowstone, and several others, less im-portant, in other portions of the Park, which is now so well exploredthat there seems little probability of additional basins of importancebeing hereafter discovered. Still, as my own explorations havemainly been made in connection with the ever-urgent duties of ex-ploring or opening roads or trail routes, and the scientific explorersof the Park have labored under many and grave disadvantagesduring brief periods of summer only, amid hostile Indians, doubtlessinteresting isolated geysers, or perhaps small groups of them, may yetbe discovered. In fact, so little, comparatively, is yet known of thenumber, size, and peculiarities of the various geysers or other springsof these regions that I deem it one of the most inviting fields forfurther scientific investigation. ERUPTIONS OF SPOUTING GEYSERS. Although, as

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