Contributions in geographical exploration . ^ acid, of powdery white appearance, with Httle steam. Asingle breath of these fumes made one cough and run for pure opening was small, irregular and cracked, but the volume of gasesemitted was great. The temperature at the siu-face was 260° C, 1)4,feet down, 264° C. Photographs 3716, 3717. No. 7. T. 166° C. West of No. 6, 200 yards. This fumarole was 200 yards N. W. of No. 6, on top of the east bank ofthe north-south gulch cutting across the mountain east of the craterof Novarupta. The temperature was 166° C. Some very interestingcolloidal r
Contributions in geographical exploration . ^ acid, of powdery white appearance, with Httle steam. Asingle breath of these fumes made one cough and run for pure opening was small, irregular and cracked, but the volume of gasesemitted was great. The temperature at the siu-face was 260° C, 1)4,feet down, 264° C. Photographs 3716, 3717. No. 7. T. 166° C. West of No. 6, 200 yards. This fumarole was 200 yards N. W. of No. 6, on top of the east bank ofthe north-south gulch cutting across the mountain east of the craterof Novarupta. The temperature was 166° C. Some very interestingcolloidal red and orange deposits were found in the throat. It was along fissure roofed over most of the way with deposits, but steamingin several places. The best deposits were exposed by the spade about onefoot Photograph by Jasper D. Sayre TAKING THE SURFACE TEMPERATURE OF FUMAROLE 10. As in the case of most of the hot ones, the steam did not condense until some distance from the orifice. With the thermocouple in the position shown, the temperature was 240° C. An idea of the appearance of this vent from a distance may be gained from the Smokes in the background. No. 8. T. 294° C. Mt. Cerberus, due S. Baked Mountain, N IS , S 65 W. This was on the Valley floor between Falling Mountain and BrokenMountain, about 500 yards beyond a big steamer under FallingMountain, in which no temperature above 100° C. could be foundalthough Sayre went down twenty feet into its throat supported by arope. No. 8 was a round hole, about two feet in diameter, in hardbaked sand on the bank of a gully. The deposits for 25 feet aroundwere white and very hard, with purplish brown incrustations in thethroats of the many cracks and crevices from which the hot gases wereissuing. Stirface temperature 294° C. March
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishercolum, bookyear1920
