. Bulletin - United States National Museum. Science. Figs. 67-68.—Cerusite. Untwinned colorless crystals. Lookout Mountain min parallel that all of the faces, reflecting simultaneously, give a single perfectly sharp signal, permitting very exact measurements. The angles of the crystal of Figure 68, in normal position, are as follows: Measurements of cerusite, Lookout mine, Figure 68, normal -position. 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 res
. Bulletin - United States National Museum. Science. Figs. 67-68.—Cerusite. Untwinned colorless crystals. Lookout Mountain min parallel that all of the faces, reflecting simultaneously, give a single perfectly sharp signal, permitting very exact measurements. The angles of the crystal of Figure 68, in normal position, are as follows: Measurements of cerusite, Lookout mine, Figure 68, normal -position. 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
