. An account of the Smithsonian Institution, its founder, building, operations, Smithsonian Institution. 24 THE SMITHSONIAN INSTITUTION. tached. The surface, although irregular in some places^ is rather smooth, witli only here and there thin coatings of rust, and, as might be expected, but very feeble evidence of chloritie, and that only on one or two spots. The specific gravity is It is highly crystalline, quite malleable, and not difficult to cut with a saw. Its surface etched with nitric acid, presents the Widmannst'attian figures, finely specked between the lines, resembling th
. An account of the Smithsonian Institution, its founder, building, operations, Smithsonian Institution. 24 THE SMITHSONIAN INSTITUTION. tached. The surface, although irregular in some places^ is rather smooth, witli only here and there thin coatings of rust, and, as might be expected, but very feeble evidence of chloritie, and that only on one or two spots. The specific gravity is It is highly crystalline, quite malleable, and not difficult to cut with a saw. Its surface etched with nitric acid, presents the Widmannst'attian figures, finely specked between the lines, resembling the representation we have of the etched surface of Hauptmannsdorf iron. Schreibersite is visible, but so in- serted in the mass that it cannot be readily detected by mechanical means. Hy- drochloric acid leaves a residue of beautifully brilliant patches of this ; Prof. Smith, in a lecture on meteorites at the Smithsonian Institution, published in the Annual Report for 1855, advocates the theory of their hmar origin. Il]e ap^i^^il^ ^ooti\. The Apparatus-room contains a large and valuable collection of instruments, prominent among which is the munificent donation of Dr. Robert Hare, of Philadel- phia, who, when he resigned the Chair of Chemistry in the University of Pennsyl- vania, which he filled with honor to himself and his country for nearly thirty years, presented to the Smithsonian the instruments of research and illustration collected and used by himself during his long and successful scientific career. The gift was important, not only on account of its intrinsic value, but also as establishing a pre- cedent which should be frequently observed by others. Besides the above, there is a full set of pneumatic instruments, of superior size and workmanship, constructed expressly for the Institution, by Mr. Chamberlain, of Boston; a set of ingenious. THE APPARATDS Please note that these images are extracted from scanned page images that may have been digitally
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