Contributions in geographical exploration . enings that gave a tcmi)eralurc of only 100° noticed no conspicuous dei^osits in this vicinity because the areawas covered with a thin laver of wind-blown ash. 274 The Ohio Journal of Science [Vol. XIX, No. 5, No. 35. T. 245° C. Ill, N 20 E. X, S 60 E. XXX, S 20 W. This steamer was on the bank of the River Lethe, and was similarto No. 34 in appearance, except that the temperature was mouth of the fumarole was about 12 to 14 inches in diameter andsurrounded by hard baked mud, without deposits. Surface temperature245° 36. T. 245°
Contributions in geographical exploration . enings that gave a tcmi)eralurc of only 100° noticed no conspicuous dei^osits in this vicinity because the areawas covered with a thin laver of wind-blown ash. 274 The Ohio Journal of Science [Vol. XIX, No. 5, No. 35. T. 245° C. Ill, N 20 E. X, S 60 E. XXX, S 20 W. This steamer was on the bank of the River Lethe, and was similarto No. 34 in appearance, except that the temperature was mouth of the fumarole was about 12 to 14 inches in diameter andsurrounded by hard baked mud, without deposits. Surface temperature245° 36. T. 245° C. IX, N 22 W. Mt. Mageik, S 26 W. X, S 51 W. This fumarole was on the east bank of the canyon formed by thestream flowing out of the Knife Peak Valley, and marked the upperend of the impassable mud canyon which this stream forms. Themain vents were surrounded by quite an area of steaming deposits were red and yellow, around the larger and hotter of 245° C, 171° C, 181° C. were recorded. Photograph by Robert F. Griggs FUMAROLE 32 FROM A DISTANCE. The man silhouetted against the steam near the vent gives the scale. Althmigh the outlying cracks accessible to our thermocouple registered only 323 C, this place has every appearance of being hotter than No. 33, where the highest temperat\:re measured in the Valley was found. No. 37. T. 342° C. 100 yards east of No. 36. This fissure w^as nearly overlooked, as it appeared no hotter thanNo. 36. However our inquisitiveness was rewarded in discoveringthat it had a surface temperature of 342° C. The mud here had acrack 100 vards long and the temperatures at various places along thiscrack were 284° C, 294° C, 314° C. and 342° C. The deposits wereyellow and browTi near the mouth of the vents while a few feet away fromthe line of the fissure the ground was ordinary gray ash. No. 38. T. 100° C. IX, N 39 W. X, S 82 W. XI, S 3 W. This mass of steam from a distance suggested a temperatt
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