Proceedings of the American Academy of Arts and Sciences, Volum 21Metcalf and Company, 1886 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Proceedings of the American Academy of Arts and Sciences, Volum 42 American Academy of Arts and Sciences Visualització completa - 1907 |
Proceedings of the American Academy of Arts and Sciences, Volum 43 American Academy of Arts and Sciences Visualització completa - 1908 |
Proceedings of the American Academy of Arts and Sciences, Volum 41 American Academy of Arts and Sciences Visualització completa - 1906 |
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Passatges populars
Pàgina 530 - Notices of the triennial and annual catalogues of Harvard University: with a reprint of the catalogues of 1674, 1682, and 1700.
Pàgina 533 - Genera Lichenum: An Arrangement of the North American Lichens* (1872) ; 'A Catalogue of Plants growing without Cultivation within Thirty Miles of Amherst College* (1875) ; and 'A Synopsis of North American Lichens, Part I.* (1882).
Pàgina 490 - ... in our own sun and in other suns among the fixed stars, and the most probable theory seems to be that these masses were thrown off from such a sun, and that they very slowly cooled, while revolving in a zone of intense heat. In, this paper we have not taken into consideration a number of iron masses, whose meteoric origin has been generally accepted, which show no Widmanstattian figures, and not even any Neumann lines.
Pàgina 534 - Mountains, so far as yet known," which, small though it be (pp. 35, 8vo), is particularly noteworthy. For in this he lays down the principles and matured opinions which he had adopted, and which he firmly adhered to, for the taxonomy and classification of Lichens.
Pàgina 509 - Clark, Charles E. Hamlin, Henry P. Kidder, Robert Treat Paine, HH Richardson, CU Shepard, John L. Sibley, and Edward Tuckerman ; and two Foreign Honorary Members, Henri Milne Edwards and Leopold von Ranke. RESIDENT FELLOWS. SAMUEL CABOT, MD DR. CABOT was born in Boston on the 20th of September, 1815, and always resided in Boston or the neighboring town of Brookline. He was the second son of Mr. Samuel and Mrs. Eliza (Perkins) Cabot On his father's side, he belonged to a family distinguished in political...
Pàgina 489 - WidmanstaU's figuring is the result of such a complete separation of the constituents, and perfect crystallization, as can occur only when the process takes place slowly and gradually. They appear to me to show that meteoric iron was kept for a long time at a heat just below the point of fusion, and that we should be by no means justified in concluding that it was not previously melted.
Pàgina 506 - WA, and Winlock, Anna. — A Catalogue of 130 Polar Stars for the Epoch of 1875.0, resulting from the available Observations made between 1860 and 1885, and reduced to the System of the Catalogue of Publication XIV of the Astronomische Gesellschaft.
Pàgina 370 - R. macranthus, Watson, Bot. King Exped. & Bot. Calif., not Scheele. — In wet places, Wahsatch Mountains and Idaho to E. Oregon, and California, south to Marin Co. b. Annuals or biennials, all but one introduced from the Old World. 1. Akenes smooth and even, or at length sprinkled with some scattered papillae, especially toward the margin : flowers moderately large and showy. R. PARVULUS, L. Certainly this was not a happy name since, like all such annuals, it may vary from depauperate to robust....
Pàgina 80 - The sodium salt is nearly insoluble in cold water, and but slightly soluble in boiling water. The undissolved portion takes a much brighter yellow color. As in the cases of the potassium and ammonium salts, a small quantity of a second salt, in very small crystals and of a white color, is formed at the same time. PHOSPHOROSO-MOLYBDATES (again). As the phosphoroso-molybdate of ammonium, which I have described in another part of this paper, appeared to contain a trace of phosphoric acid, I repeated...
Pàgina 300 - Let us suppose that there are four girls at school, Anna, Bertha, Cora, and Dora, and that some one had observed that (1.) Whenever either Anna or Bertha (or both) remained at home, Cora was at home ; and (2.) When Bertha was out, Anna was out ; and (3.) Whenever Cora was at home, Anna was at home. What information is here conveyed concerning Dora ? Indicating by the capital letters the fact of remaining at...