Volume 71, Number 6, Pages 795-841.

U.S. Geological Survey, 1964, The Hebgen Lake, Montana, earthquake of August 17, 1959: US Geological Survey Professional Paper 435, 242 pages.

U.S. Geological Survey, 1972, Geologic map of Yellowstone National Park: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-711 (in press).

White, D. E., 1967, Some principles of geyser activity, mainly from Steamboat Springs, Nevada: American Journal of Science, volume 265, number 8, pages 641-684.

★ U. S. GOVERNMENT PRINTING OFFICE: 1972 O-467-725

Transcriber’s Notes

—Retained publication information from the printed edition: this eBook is public-domain in the country of publication.

—Corrected a few palpable typos.

—Included a transcription of the text within some images.

—Renumbered footnotes, and modified references to them accordingly.

—In the text versions only, text in italics is delimited by underscores.