ASTRONOMY: Formation of Lunar Tables on the Theory of Universal Gravitation.-
Comet of 1819.-Observations of Cacciatore, Brinkley, and Enke.-PHYSICS: The
Figure of the Earth.-The Decrease in the Length of the Day by the gradual cool-
ing of the Earth.-Speculations of M. Fourier on the Secular Refrigeration of the
Globe.-General Consequences deduced from his Analysis.—Geodesical Opera-
tions, and Observations on the Length of the Pendulum.-Captain Freycinet's Expe-
dition.-Trigonometrical Survey of France.-Measurement of an Arc of the Meri-
dian in the Canton of Berne, and in Holstein. -METEOROLOGY: Observations of
Baron de Humboldt on the Lower Limit of Perpetual Snow in the Himalaya
Mountains and the Equatorial Regions.-ELECTRO-MAGNETISM: Professor Oer-
sted's Discovery of the Identity of Electricity and Magnetism.-Experiments of
Ampere, Arago, Boisgeraud, Biot, Savart, Berzelius, Sir H. Davy, and Mr Faraday, 323
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