Contributions in geographical exploration . are like any other part of the \alley. Locallythey may be very hot, but these hot spots arc always obviouslyassociated with some special vent in the vicinity. It is not only impossible to find any lava flow, but it isequally difficult to locate any vent from which such a streammight have come. Certainly it could not have come from thecrater of Katmai. The low points in its rim are all occupiedby glaciers which antedate the eruption, being covered by thesame layers of ash as are found everywhere throughout the 104 The Ohio Journal of Science [Vol. XIX
Contributions in geographical exploration . are like any other part of the \alley. Locallythey may be very hot, but these hot spots arc always obviouslyassociated with some special vent in the vicinity. It is not only impossible to find any lava flow, but it isequally difficult to locate any vent from which such a streammight have come. Certainly it could not have come from thecrater of Katmai. The low points in its rim are all occupiedby glaciers which antedate the eruption, being covered by thesame layers of ash as are found everywhere throughout the 104 The Ohio Journal of Science [Vol. XIX, No. 2, district. If any lava flow underlies the Valley, it must haveissued from fissures in its floor. vSuch a fissure eruption is,of course, quite within the bounds of possibiUty. But we havenow reached the stage where, in order to support our surfacewater hypothesis, we have had to assume the presence of boththe lava flow, to be cooled, and the water, to be will now be advisable to consider the other side of the Photograph by D. B. ChurchTHE VALLEY OF TEN THOUSAND comer of the Valley of Ten Thousand Smokes, looking from the rim of Novamptatoward Baked Mountain, July 15, 1917. SMOKES ARE CONSTANT. A large body of lava will obviously remain hot for a longtime. It would be quite possible for such a mass, if it werepresent in the Valley, to retain heat enough to continue tosend up clouds of steam throughout the six years which haveelapsed since the eruption. But it will be recognized that thissort of activity would of necessity be gradually dying should expect, therefore, to find a sensible diminution ofthe activity of the Valley with the lapse of time. On thecontrary no diminution whatever can be detected. The smokesappear exactly the same now as when they were the pictures above, taken in succeeding years. Dec, 191S] Arc the Ten Thoiisaud Smokes Real Volcaiwes? 105 The comi)ositi<)n of the smoke from \.\\v venls i
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