Saint Pierre, Bernardin de, Paul and Virginia, 26; Studies of Nature, 347.
Salses or mud volcanoes, 224-228; striking phenomena attending their origin, 224, 225.
Salt works, depth of 158, 159; temperature, 174.
Santorino, the most important of the islands of eruption, 241, 242; description of. See note by Translator, 241.
Sargasso Sea, its situation, 308.
Satellites revolving round the primary planets, their diameter, distance, rotation, etc., 94, 99; Saturn's 96-98, 127' Earth's see Moon, Jupiter's, 96, 97; Uranus, 96-98.
Saurians, flying, fossil remains of, 274, 275.
Saussure, measurements of the marginal ledge of the crater of Mount Vesuvius, 232; traces of ammoniacal vapors in the atmosphere, 311; hygrometric measurements with Humboldt, 334-336.
Schayer, microscopic organisms in the ocean, 342, 343.
Scheerer on the identity of eleolite and nepheline, 253.