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Flagstaff

(Encyclopedia) Flagstaff, city (2020 pop. 76,831), seat of Coconino co., N Ariz., near the San Francisco Peaks; inc. 1894. Lumbering, ranching, and a…

Boltwood, Bertram Borden

(Encyclopedia) Boltwood, Bertram Borden, 1870–1927, American chemist and physicist, b. Amherst, Mass., grad. Sheffield Scientific School, Yale, 1892. After graduate study at Leipzig and Yale (Ph.D.,…

Lyell, Sir Charles

(Encyclopedia) Lyell, Sir CharlesLyell, Sir Charleslīˈəl [key], 1797–1875, British geologist. After studying and briefly practicing law, he spent most of his life in travel and in popularizing…

Hutton, James

(Encyclopedia) Hutton, James, 1726–97, Scottish geologist, chemist, and naturalist. He was initially attracted to chemistry; he entered the legal profession at the Univ. of Edinburgh; turned to…

Osborn, Henry Fairfield

(Encyclopedia) Osborn, Henry Fairfield, 1857–1935, American paleontologist and geologist, b. Fairfield, Conn. He was professor of comparative anatomy (1883–90) at Princeton, and professor of biology…

Wollaston, William Hyde

(Encyclopedia) Wollaston, William Hyde, 1766–1828, English scientist, M.D. Cambridge, 1793. His wide-ranging scientific achievements include the discovery (1802) of the dark lines (Fraunhofer lines)…

Karst

(Encyclopedia) KarstKarstkärst [key], Ital. Carso, Slovenian Kras, limestone plateau, W Slovenia, N of Istria and extending c.50 mi (80 km) SE from the lower Isonzo (Soča) valley between the Bay of…

Richthofen, Ferdinand, Baron von

(Encyclopedia) Richthofen, Ferdinand, Baron vonRichthofen, Ferdinand, Baron vonfĕrˈdēnänt bärōnˈ fən rĭkhtˈhōfən [key], 1833–1905, German geographer, geologist, and traveler. He took part in a…

Gatschet, Albert Samuel

(Encyclopedia) Gatschet, Albert SamuelGatschet, Albert Samuelgăˈchĭt [key], 1832–1907, American ethnologist, b. Switzerland. He was trained as a linguist in the universities of Bern and Berlin, and…

Guettard, Jean-Étienne

(Encyclopedia) Guettard, Jean-ÉtienneGuettard, Jean-Étiennezhän-ātyĕnˈ gĕtärˈ [key], 1715–86, French geologist, botanist, and natural historian. He was curator of the natural history collection of…