Proceedings of the American Academy of Arts and Sciences, Volume 30

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Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell.
 

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Page 567 - A Course of Instruction in the Elements of the Art and Science of War, for the Use of the Cadets of the United States Military Academy, West Point, NY 12mo, cloth $1 .75 Field Fortifications.
Page 406 - ... in the proportion of two molecules of the former to one of the latter, the...
Page 219 - The discharge, whatever may be its nature, is not correctly represented (employing for simplicity the theory of Franklin) by the single transfer of an imponderable fluid from one side of the jar to the other...
Page 306 - The annular zone according to Hubrecht does not arise until after the first stages in the development of the primitive streak, and therefore is a later differentiation in the hypoblast than is the protochordal plate. Concerning this third source there has been much dispute. Bonnet ('84) has found it in the sheep, and Robinson ('92) in the rat and the mouse. But many authors find no evidence of such an origin for any part of the mesoderm, as, for example, Kolliker ('82), Heape ('83), Fleischmann ('89),...
Page 506 - A brief statement, not to exceed eight or ten lines, to be prepared by the author himself, setting forth the general purport of the book or article so as to furnish the necessary data for cross references.
Page 219 - ... equilibrium is obtained. All the facts are shown to be in accordance with this hypothesis, and a ready explanation is afforded by it of a number of phenomena which are to be found in the older works on electricity, but which have until this time remained unexplained.
Page 556 - And he shakes his feeble head, That it seems as if he said, "They are gone." The mossy marbles rest On the lips that he has pressed In their bloom, And the names he loved to hear 198 Have been carved for many a year On the tomb.
Page 220 - If we replace the copper wire previously used (diam. 1 mm.) by a thicker or a thinner copper wire, or by a wire of another metal, the nodal points are found to remain in the same positions. Thus the rate of propagation in all such wires is the same, and we are justified in speaking of it as a definite velocity. Even iron wires are no exceptions to this general rule ; hence the magnetic properties of the iron are not called into play by such rapid disturbances.
Page 73 - ... more than twice as long as the others or as the spurs, but scarcely so long as the first, tarsal joint. Hind tarsi two fifths as long as the tibiae, the first joint about as long as the rest together, the second nearly three times as long as the third and with it fully as long as the fourth.

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