Proceedings of the Royal Society of London, Volume 52Taylor & Francis, 1893 |
Contents
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Common terms and phrases
Academy air-bladder alloys aluminium angle antimony apparatus appear axis bismuth C.G.S. units cadmium carbonic acid cavity cells cent centre chloride clavicle connexion contact breaker containing coracoid corresponding curve dielectric discharge dorsal earth current effect electric eosinophile equation experiments F.R.S. Received force given gives gram H. G. Seeley heat Heft hydrogen flame Ichthyosaurus inches Institute J. J. THOMSON Journal lamp lens lines London magnetic means mercury metal method minute movement muscles nerve nitric acid nitrous Nothosaurus Observatory observed obtained oxide oxygen paper Paris photographic plate Plesiosauria position potential difference precoracoid present pressure principal focal length produced Professor H. G. ratio rays represent Royal scapula shoulder girdle Society solar solution spark spark-length spinal spinal nerves stop surface temperature tides tion Transactions tube uric acid values variation velocity ventral Weberian ossicles wire zinc
Popular passages
Page 388 - Jf, or both ; the logarithms of the 1/f are found amongst the astronomical data, and the logarithms of the constant Jf's are printed in the forms in their proper places. The treatment of the 21 harmonic components derived from the harmonic analysis of the 5 JJl's and gt's is shown in the forms.
Page 8 - ... system A. The whole instrument, as said above, rests on three vulcanite legs attached to the base plate of system A ; and two terminals are provided, one, i, on the base of system A, and the other, j, on the end of one of the corner bolts of system B. The air leyden, which has been thus described is used as a standard of electrostatic capacity. In the instrument actually exhibited to the Society there are twenty-two plates of the system B, twenty-three of the system A, and therefore fortyfour...
Page 451 - Gases,'' delivered before the Royal Society by Prof. Harold B. Dixon, on January 19 : — 1. Berthelot's measurements of the rates of explosion of a number of gaseous mixtures have been confirmed. The rate of the explosion wave for each mixture is constant. It is independent of the diameter of the tube above a certain limit. 2. The rate is not absolutely independent of the initial temperature and pressure of the gases. With rise of temperature the rate falls ; with rise of pressure the rate increases...
Page 7 - B rests by means of the well-known " hole, slot, and plane arrangement," * engraved on the under side of its bottom plate, on three upwardly projecting glass columns which are attached to three metal screws working through the sole plate of system A. These screws can be raised or lowered at pleasure, and by means of a gauge the plates of system B can be adjusted to exactly midway between, and parallel to, the plates of system A. The complete leyden stands upon three vulcanite feet attached to the...
Page 340 - Palcemonetes solid masses of cells lie upon either side of the cephalic aorta. The dorsal sac is formed by the hollowing out of these masses of cells. Two lateral cavities are thus formed, which are separated by the aorta. The protoplasm of the cells lining these cavities, which is at first gathered into masses around the nuclei, then spreads out into a thin sheet, drawing away from the lower portion of the aorta, and causing the two lateral cavities to unite ventrally, and so form a single sac....
Page 326 - The 3O-inch reflector and slit-spectroscope at Westgate-onSea have also been used in the inquiry. My object has not been so much to obtain photographs of the spectra of a large number of stars as to study in detail the spectra of comparatively few. In the classifications of stars adopted by others from a consideration of the visual observations, only the broader differences in the spectra have been taken into account. Prof. Pickering has more recently employed a provisional classification in connection...
Page 390 - ... the maxillary tusk ; and probably by the elongated spindle-shaped area enclosing the pineal fossa, and also by the slight ossification of the vertebral centra. A second and much smaller specimen, provisionally referred to G.
Page 308 - ... that terrestrial magnetic storms are due to magnetic action of the sun ; or to any kind of dynamical action taking place within the sun, or in connexion with hurricanes in his atmosphere, or anywhere near the sun outside.
Page 304 - ... absolutely inconceivable supposition, as we shall presently see) to produce, by direct action simply as a magnet, any disturbance of terrestrial magnetic force sensible to the instruments of our magnetic observatories. Considering probabilities and possibilities as to the history of the earth from its beginning to the present time, I find it unimaginable but that terrestrial magnetism is due to the greatness and the rotation of the earth.
Page 308 - We have at present two good and sure connections between magnetic storms and other phenomena : the aurora above, and the earth currents below, are certainly in full working sympathy with magnetic storms In this respect the latter part of Mr. Ellis's paper is of special interest, and it is to be hoped that the Greenwich observations of earth currents will be brought thoroughly into relation with the theory of Schuster and Lamb, extended, as indeed Professor Schuster promised to extend it, to include...