Annual Report of the Board of Regents of the Smithsonian InstitutionThe Institution, 1877 |
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Annual Report of the Board of Regents of the Smithsonian Institution Smithsonian Institution. Board of Regents Visualizzazione completa - 1869 |
Annual Report of the Board of Regents of the Smithsonian Institution Smithsonian Institution. Board of Regents Visualizzazione completa - 1922 |
Annual Report of the Board of Regents of the Smithsonian Institution Smithsonian Institution. Board of Regents Visualizzazione completa - 1872 |
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Brani popolari
Pagina 208 - That gravity should be innate, inherent, and essential to matter, so that one body may act upon another at a distance, through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man who has in philosophical matters a competent faculty of thinking can ever fall iuto it. Gravity must be caused by an agent acting constantly according to certain laws; but whether this agent...
Pagina 208 - It is inconceivable, that inanimate brute matter should, without the mediation of something else, which is not material, operate upon, and affect other matter without mutual contact; as it must do, if gravitation, in the sense of Epicurus, be essential and inherent in it.
Pagina 208 - But hitherto I have not been able to discover the cause of those properties of gravity from phenomena, and I frame no hypotheses: for whatever is not deduced from the phenomena is to be called an hypothesis ; and hypotheses, whether metaphysical or physical, whether of occult qualities or mechanical, have no place in experimental philosophy.
Pagina 129 - Whenever suitable arrangements can be made from time to time for their reception, all objects of art and of foreign and curious research, and all objects of natural history, plants, and geological and mineralogical specimens belonging to the United States...
Pagina 230 - In that view matter is not merely mutually penetrable, but each atom extends, so to say, throughout the whole of the solar system, yet always retaining its own centre of force.
Pagina 262 - Thus the law of universal attraction becomes pure Metaphysics if we withdraw from it the verifiable specification of its mode of operation. Withdraw the formula " inversely as the square of the distance and directly as the mass," and Attraction is left standing a mere
Pagina 234 - The principle of the conservation of force would lead us to assume, that when A and B attract each other less, because of increasing distance, then some other exertion of power, either within or without them, is proportionately growing up ; and again, that when their distance is diminished, as from ten to one, the power of attraction, now increased a hundred-fold, has been produced out of some other form of power which has been equivalently reduced.
Pagina 19 - This work is the tenth of a series of papers intended to illustrate the collections of natural history and ethnology belonging to the United States and constituting the National Museum, of which the Smithsonian Institution was placed in charge by the act of Congress of August 10, 1846.
Pagina 129 - That, in proportion as suitable arrangements can be made for their reception, all objects of art and of foreign and curious research, and all objects of natural history, plants, and geological and mineralogical specimens, belonging or hereafter to belong, to the United States, which may be in the city of Washington, in whosesoever custody the same may be, shall be delivered to such persons as may be authorized by the Board of Regents to receive them...
Pagina 5 - HAZELTON, member of the House of Representatives. JOHN MACLEAN, citizen of New Jersey. PETER PARKER, citizen of Washington. ASA GRAY, citizen of Massachusetts. JD DANA, citizen of Connecticut. HENRY COPPEE, citizen of Pennsylvania. GEORGE BANCROFT, citizen of Washington. EXECUTIVE COMMITTEE OF THE BOARD OF REGENTS. PETER PARKER. JOHN MACLEAN.