. Bulletin - United States National Museum. Science. U. S. NATIONAL MUSEUM BULLETIN 149, PLATE 31. (1). MiCROSECTION OF PHONOLITE TUFF. HEGAU. GERMANY. (AFTER GUSHING); (2). GHONDROIDAL FORM IN BASALTIC TUFF, (AFTER FOYE) For explanation of plate see pages 52 and 53. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smit
. Bulletin - United States National Museum. Science. U. S. NATIONAL MUSEUM BULLETIN 149, PLATE 31. (1). MiCROSECTION OF PHONOLITE TUFF. HEGAU. GERMANY. (AFTER GUSHING); (2). GHONDROIDAL FORM IN BASALTIC TUFF, (AFTER FOYE) For explanation of plate see pages 52 and 53. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
