Lavoisier, 62.
Lawrence (St.), fiery tears, 124; meteoric stream, 125.
Leibnitz, his conjecture that the planets increase in volume in proportion to their increase of distance from the Sun, 93.
Lenz, observations on the mean level of the Caspian Sea, 297; maxims of density of the oceanic temperature, 304; temperature and density of the ocean under different zones of latitude and longitude, 306.
Leonhard, Karl von, assumption on formations of granular limestone, 263.
Leverrier, planet Neptune. See Translator's note, 90, 91.
Lewy, observations on the varying quantity of oxygen in the atmosphere, according to local conditions, or the seasons, 311, 312.
Lichtenberg, on meteoric stones, 118.
Liebig on traces of ammonical vapors in the atmosphere, 311.
Light, chromatic polarization of, 52; transmission, 88; of comets, 104-106; of fixed stars, 105; extraordinary lightness, instances of, 142-144; propagation of 153; speed of transit, 153, 154. See Aurora, Zodiacal Light, etc.