At 07:45 AM 03/27/1999 -0500, you wrote: >Darrell, >Do you know the name of the Dutton explorer? >Doug Hi, Doug: Here's some information on Clarence E. Dutton. -------------------- Dutton, C. E., 1882, Tertiary History of the Grand Canyon District: Washington, D.C., Government Printing Office, v. 2, 264 p.; United States Geological Survey Mongraphs. DUTTON, Clarence E. Atlas to Accompany the Monograph on the Tertiary History of the Grand Cañon District. Washington, 1882. Large folio. The "most impressive published result of the great scientific expeditions to the American West after the Civil War." Dutton's report, based on his explorations of the Grand Canyon in the early 1880s, was the most extensive and important study of that region to date. It is particularly notable for the great atlas volume, consisting of twelve double-sheet maps (most of which are colored) and ten double-sheet panoramas (most tinted). Executed by lithographer Julius Bien, the atlas portrays the Grand Canyon at its most impressive, with all the panoramas on large double folio sheets (images measure 33 by 20 inches). One of the panormas, entitled "The Transept," is by Thomas Moran, the renowned landscape painter and etcher who was the first to represent adequately the scenery of the West. The rest of the panoramas were done by the great archaeologist-artist William Henry Holmes, whose illustrations for this volume are considered "masterpieces of realism and draftsmanship as well as feats of imaginative observation" (Goetzmann, Exploration and Empire, 512-13). Concerning Plate Tectonics: Clarence Dutton codified the theory of isostasy (and named it as such) in his 1889 paper "On Some of the Greater Problems of Physical Geology". -------------------- I believe Clarence E. Dutton was a commissioned officer in the U.S. Army, a captain at the time of his survey of the Grand Canyon in 1879, later a major, perhaps? Take a look at: http://www.150.si.edu/chap4/4canyn.htm http://155.246.2.44/eng/r000038/r037714.htm Darrell