GUYOT, ARNOLD HENRY (18o71884)

This article appears in Volume V12, Page 747 of the Encyclopedia Britannica.

Encyclopedia Britannica - Main :: GUI-HAN

GUYOT, ARNOLD HENRY (18o71884) , ' Swiss-American geologist and geographer, was born at Boudevilliers, near Neuchatel, Switzerland, on the 28th of September 1807. He studied at the college of Neuchatel and in Germany, where he began a lifelong friendship with Louis Agassiz. He was professor of history and physical geography at the short-lived Neuchatel "

Academy

ACADEMY, GREEK
ACADEMY, ROYAL

" from 1839 to 1848, when he removed, at Agassiz's instance, to the United States, settling in

Cambridge

, Massachusetts. For several years he was a lecturer for the Massachusetts State Board of Education, and he was professor of geology and physical geography at Princeton from 1854 until his death there on the 8th of February 1884. He ranked high as a geologist and meteorologist. As early as 1838, he undertook, at Agassiz's suggestion, the study of glaciers, and was the first to announce, in a

paper

PAPER
PAPER (Fr. papier, from Lat. papyrus)

submitted to the Geological Society of France, certain important observations relating to glacial motion and structure. Among other things he noted the more rapid flow of the centre than of the sides, and the more rapid flow of the top than of the bottom of glaciers; described the laminated or " ribboned " structure of the glacial ice, and ascribed the

movement

MOVEMENT

of glaciers to a

gradual

GRADUAL (Med. Lat. gradualis, of or belonging to steps or degrees; gradus, step)

molecular displacement rather than to a sliding of the ice mass as held by de Saussure. He subsequently collected important data concerning erratic boulders. His extensive meteorological observations in America led to the

establishment

ESTABLISHMENT (0. Fr. establissement, Fr. etablissement,
late
- LATE
Norm. Fr. establishement, from O. Fr. establir, Fr. etablir, Lat. stabilire, to make stable)

of the United States Weather Bureau, and his Meteorological and Physical Tables (1852, revised ed. 1884) were long standard. His graded

series

SERIES (a Latin word from serere, to join)

of text-books and

wall

WALL (O. Eng. weal, weall, Mid. Eng. wal, wane, adapted from Lat. vallum, rampart; the
original
- ORIGINAL
O. Eng. word for a wall was wag or tenth)
WALL, RICHARD (1694-1778)

-maps were important aids in the extension and popularization of geological study in America. In addition to text-books, his principal publications were: Earth and Man, Lectures on Comparative Physical Geography in its Relation to the History of Mankind (translated by Professor C. C. Felton, 1849); A Memoir of Louis Agassiz (1883); and Creation, or the Biblical Cosmogony in the Light of Modern Science (1884).
See James D. Dana's " Memoir " in the Biographical Memoirs of the National

Academy

ACADEMY, GREEK
ACADEMY, ROYAL

of Science, vol. ii. (Washington, 1886).

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