. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. Fig. 133. Frogs, Colliery Railroads of England, 1825. (From drawings in the U. S. National Museum.) Frogs of various shapes were used on the colliery roads of England previous to the introduction of the locomotive. Fig. 133 is from a draw- ing in the collection, which was made from the report made by William &:::. Fig. 134. Frog, Old Portage Railroad, about 1835. ( From original in the V. S. National Museum.) Strickland in 1826 to the P
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. Fig. 133. Frogs, Colliery Railroads of England, 1825. (From drawings in the U. S. National Museum.) Frogs of various shapes were used on the colliery roads of England previous to the introduction of the locomotive. Fig. 133 is from a draw- ing in the collection, which was made from the report made by William &:::. Fig. 134. Frog, Old Portage Railroad, about 1835. ( From original in the V. S. National Museum.) Strickland in 1826 to the Pennsylvania Society for Internal Improve- ment, in which two types of frogs, which he examined while iu England in 1825, are illustrated and described. Fig. 134 is drawn from an old. 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
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