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William Hypolitus (or Hippolitus, or Hypolite) Keating (August 11, 1799, Wilmington, Delaware – 1840, London, England) was an American geologist. His father, Baron John Keating, of Irish ancestry, had been an officer in the French army in the West Indies and had settled in Wilmington, Delaware. He was educated at the University of Pennsylvania, and then in France and Switzerland, where he studied mining. In 1822, he became Professor of Chemistry and Mineralogy at the University of Pennsylvania[1] and a member of the American Philosophical Society.[2] He is perhaps best known for his work on the staff of Stephen Long's expedition to the Great Lakes in 1823, an account of which he published in 1824.[3] In the account he first hypothesized the existence of what is now known as Lake Agassiz. Formed at the end of the last ice age during the retreat of the great North American glaciers Lake Agassiz was, at its peak, much larger than any currently existing lake. The tremendous significance of the discovery has come to be appreciated in recent decades because the draining of Lake Agassiz into the North Atlantic Ocean is now generally thought to have been responsible for sudden periods of cooling of Northern Hemisphere climate at the end of the Pleistocene. The most dramatic of these periods of cooling is known as the Younger Dryas.

The standard author abbreviation Keating is used to indicate this person as the author when citing a botanical name.[4] References[edit]

^ John Keating and his forbears (1918) Author: Keating, John Percy, 1855-1920. Reprinted from the Records of the American Catholic Historical Society Vol. XXIX No. 4 December 1918. Identifier-ark: ark:/13960/t6f19440p https://archive.org/details/johnkeatinghisfo00keat The author was a great-grandson of John. Accessed 14 July 2011 ^ Pierce, Bessie Louise (2004) [1933]. As Others See Chicago: Impressions of Visitors, 1673-1933. Chicago: University of Chicago Press. p. 31. ISBN 9780226668215. Retrieved 3 August 2016.  ^ Keating, William Hypolitus (1824). Narrative of an Expedition to the Source of St. Peter's River, Lake Winnepeek, Lake of the Woods, &c. &c., Performed in the Year 1823, by Order of the Hon. J.C. Calhoun, Secretary of War, Under the Command of Stephen H. Long, Major, U.S.T.E. Philadelphia: H.C. Carey & I. Lea.  ^ IPNI.  Keating. 

External links[edit]

Volume 1 and Volume 2 of Keating's 1824 "Narrative of an Expedition..." at Internet Archive.

Authority control

WorldCat Identities VIAF: 12659894 LCCN: n88101351 Botanist: Keat

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