Proceedings of the American Academy of Arts and Sciences, Volumen7Metcalf and Company, 1868 Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |
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Página 72
American Academy of Arts and Sciences. It may be asked , if the comb was not built with all its diameters equal , but afterwards accidentally disturbed . The comb is suspended mostly from the uppermost portion , the lowermost hanging ...
American Academy of Arts and Sciences. It may be asked , if the comb was not built with all its diameters equal , but afterwards accidentally disturbed . The comb is suspended mostly from the uppermost portion , the lowermost hanging ...
Página 95
American Academy of Arts and Sciences. and contained three grammes of the oxide . Although the results of the analysis indicate that the temperature of the air - bath was too low , they also show , by comparison with the results obtained ...
American Academy of Arts and Sciences. and contained three grammes of the oxide . Although the results of the analysis indicate that the temperature of the air - bath was too low , they also show , by comparison with the results obtained ...
Página 96
American Academy of Arts and Sciences. mixture of asbestos and oxide of copper occupied a space of five inches in length , but contained only two grammes of the oxide . At the close of the combustion there was no appearance of chloride ...
American Academy of Arts and Sciences. mixture of asbestos and oxide of copper occupied a space of five inches in length , but contained only two grammes of the oxide . At the close of the combustion there was no appearance of chloride ...
Página 98
American Academy of Arts and Sciences. Five hundred and sixty - fourth Meeting . March 13 , 1866. - ADJOURNED STATUTE MEETING . The PRESIDENT in the chair . The Corresponding Secretary read letters relative to the exchanges . The ...
American Academy of Arts and Sciences. Five hundred and sixty - fourth Meeting . March 13 , 1866. - ADJOURNED STATUTE MEETING . The PRESIDENT in the chair . The Corresponding Secretary read letters relative to the exchanges . The ...
Página 104
American Academy of Arts and Sciences. he entered Harvard College in 1811. Though his straitened circum- stances made long absences for school - keeping necessary , and his health at one time was greatly impaired , he yet maintained a ...
American Academy of Arts and Sciences. he entered Harvard College in 1811. Though his straitened circum- stances made long absences for school - keeping necessary , and his health at one time was greatly impaired , he yet maintained a ...
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Página 130 - The Vegetable Kingdom, or the Structure, Classification, and Uses of Plants, illustrated upon the Natural System.
Página 496 - Two reports have recently been issued on rates of deck watches and of box and pocket chronometers on trial for purchase by the Board of Admiralty at the Royal Observatory, Greenwich, in the latter half of last year.
Página 16 - Report of the Astronomer Royal to the Board of Visitors of the Royal Observatory, Greenwich, read at the Annual Visitation of the Royal Observatory, 1860, June 2; and Address of the Astronomer Royal to the Board of Visitors, 1860, May 12.
Página 26 - Statistics of the Foreign and Domestic Commerce of the United States. .... Communicated by the Secretary of the Treasury, in Answer to a Resolution of the Senate of the United States, March 12, 1863.
Página 28 - An address delivered at the anniversary meeting of the Geological Society of London, on the 19th of February, 1841 ; and the announcement of the award of the Wollaston medal and donation fund for the same year.
Página 507 - ANNUAIRE DE CHIMIE, comprenant les applications de cette science à la médecine et à la pharmacie, ou Répertoire des découvertes et des nouveaux travaux en chimie faits dans les diverses parties de l'Europe ; par MM. E.
Página 311 - THE GEOLOGY OF PENNSYLVANIA: A Government Survey ; with a General View of the Geology of the United States, Essays on the Coal- Formation and its Fossils, and a Description of the Coal-Fields of North America and Great Britain.
Página 13 - Report to the Legislature of Massachusetts relating to the Registry and Return of Births, Marriages and Deaths in the Commonwealth for the year ending December 31, 1880.
Página 14 - Annual Report of the Trustees of the Museum of Comparative Zoology at Harvard College, in Cambridge, together with the Report of the Director, 1864.
Página 47 - ... cylinders, welded together endwise. Each ring was made of bars wound upon an arbor spirally, like winding a ribbon upon a block, and, being welded and shaped in dies, were joined endwise, when in the furnace and at a welding heat, and afterwards pressed together in a mould, by a hydrostatic press of 1,000 tons force.