. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. AMERICAN GEOLOGY— OE 1840-1849. 403 Berkshire (Richmond) bowlder train, first brought to notice by Hitch- cock (see p. 394). According' to the descriptions now given, the trains start, each from its particular depression in the summit of a high ridge, in Canaan, New York. Taking a direction S. 35°EM they cross the higher ridges and. S^2SLD Fig. 42.—Sketch map of Richmond Bowlder Train. (After E. R. Benton.) their intervening valleys,
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. AMERICAN GEOLOGY— OE 1840-1849. 403 Berkshire (Richmond) bowlder train, first brought to notice by Hitch- cock (see p. 394). According' to the descriptions now given, the trains start, each from its particular depression in the summit of a high ridge, in Canaan, New York. Taking a direction S. 35°EM they cross the higher ridges and. S^2SLD Fig. 42.—Sketch map of Richmond Bowlder Train. (After E. R. Benton.) their intervening valleys, the longer for a distance of 20 miles and the shorter for 1 miles. The individual trains are neither of them more than 300 or 400 feet in breadth, and not over half a mile asunder. The transported blocks are of all sizes up to 20 feet in diameter, sharply angular, free from scratches, and all of the same lithological. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Board of Regents; United States National Museum. Report of the U. S. National Museum; Smithsonian Institution. Report of the Secretary. Washington : Smithsonian Institution
Size: 1378px × 1812px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorsmithsonianinstitutio, bookcentury1800, bookdecade1840
