Monthly Notices of the Royal Astronomical Society, Volume 19

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Priestley and Weale, 1859
Includes lists of additions to the Society's library, usually separately paged.

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Page 235 - Pendulum vibrating Seconds of Mean Time in the Latitude of London in a Vacuum at the Level of the Sea...
Page 161 - Exegi monumentum aere perennius Regalique situ pyramidum altius, Quod non imber edax, non Aquilo impotens Possit diruere aut innumerabilis Annorum series et fuga temporum.
Page 287 - The final result, therefore, of the mechanical theory is, that the only system of rings which can exist is one composed of an indefinite number of unconnected particles, revolving round the planet with different velocities according to their respective distances.
Page 308 - Its character is essentially the game as that of the parallel-wire micrometer; but it has some peculiarities, not, it is believed, previously introduced, and on which its wide range depends. The most remarkable of these peculiarities consists in its being furnished with two eye-pieces, composed of small single lenses, mounted in separate frames, which slide in a groove, and can be separated to the required distance. A frame carrying two parallel spider-lines, each mounted separately with its own...
Page 282 - We may draw the conclusion more formally as follows : — If the rings were solid and uniform, their motion would be unstable, and they would be destroyed ; but they are not destroyed, and their motion is stable, therefore they are either not uniform or not solid.
Page 360 - Account of the observations and calculations, of the principal triangulation ; and of the figure, dimensions and mean specific gravity of the earth as derived therefrom, etc.
Page 361 - J.Williams. the unexchangeable obliquity of the Ecliptic, the Solar and Lunar Equations, deduced from circular orbits, and the direct, retrograde, and stationary appearances of the Minor Planets are mathematically demonstrated on the basis of the ist chapter of Genesis, 8vo.
Page 189 - West at the same transit. The second principle was the substitution of a level or system of levels for the usual plumbline. The third principle was the casting in one piece, as far as practicable, of each of the different parts of the instrument, in order to avoid the great number of screws and fastenings with which most instruments are hampered, and to secure, if possible, perfect rigidity.
Page 336 - Though there seems to be no question that the dark space so frequently included in the tails of great comets is the result of a hollow structure, an attentive consideration of the appearances exhibited by the comet of Donati has led me to think it probable that some other cause may concur in its production. The ordinary laws of perspective certainly seem inadequate to its explanation, except in cases in which the darkness bears a large proportion to the brighter streams on each side of it: for unless...
Page 362 - EXTRACTS from an INVESTIGATION of the Effect of the Prevailing Wave Influence on the NILE'S Deposits, and upon the Littoral of its Delta.

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