. Annual report. 1st-12th, 1867-1878. Geology. 266 REPORT UNITED STATES GEOLOGICAL SURVEY. The following tables give some of the intervals for the eruptions ob- served : Wti tX'M M a ° a ° o . 'a fco eginni inning ting. •3fe a S -s^s ^2 3 3 ° s-« Ph ^ ph m. s. m. s. m*. s. 5 00 5 30 3 00 5 00 6 00 4 30 4 30 5 30 3 00 5 45 6 00 4 00 5 00 6 10 3 20 1^ S O SO First eruption .. Second eraption Third eruption . Fourth eruption Fifth First to second. Second to third Third to fourth Fourth tolifth. Fifth to sixth-. After the spouting is over it is usually a minute before the water re
. Annual report. 1st-12th, 1867-1878. Geology. 266 REPORT UNITED STATES GEOLOGICAL SURVEY. The following tables give some of the intervals for the eruptions ob- served : Wti tX'M M a ° a ° o . 'a fco eginni inning ting. •3fe a S -s^s ^2 3 3 ° s-« Ph ^ ph m. s. m. s. m*. s. 5 00 5 30 3 00 5 00 6 00 4 30 4 30 5 30 3 00 5 45 6 00 4 00 5 00 6 10 3 20 1^ S O SO First eruption .. Second eraption Third eruption . Fourth eruption Fifth First to second. Second to third Third to fourth Fourth tolifth. Fifth to sixth-. After the spouting is over it is usually a minute before the water retires. As the tables show, the water begins to rise until the basin overflows. The eruption begins with a few bubbles of steam followed by bulges when the steam escapes with a sound like that of a liquid escaping from the bung of a barrel. This is soon followed by the spurting, which is to a height of G to 10 feet. When the water retires it appears to be sucked in as water is from a basin with a small aperture. As we have seen, the temperature increases from about 166° at the time when the geyser is quiet to 185° when it is in action, after which it decreases. Although the eruptions noted were few in number, the geyser appears to be very regular. Isolated eruptions were afterwards seen, but were found to correspond to those that have been given above in the tables. No. 14, Soap Kettle.—This spring was named in 1872. Professor Bradley says (report for 1872, page 246): Forty feet beyond (the bulging spring), the Soap Kettle keeps np a furious boiling of colored water, more or less covered with foam, looking like dirty soap-suds. Its basin is lined with a yellowish brown deposit. This has probably been a strong spouter, but now erupts only at long intervals, if at all. In 1878 it was a circular basin of hard geyserite, measuring about 9 feet in diameter. The rim was about a foot in heiglit. The inside sloped gradually to an irregular opening, measuring, approximately, 3
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