transport of volcanic ashes by upper currents, 128, 129; barometer, 129, 130; circuit currents of the Atlantic and Pacific, 130, 131; cold polar currents flowing beneath the tropical, and carrying icebergs into the Gulf Stream, 131. ----, irregularities in the tides at Tahiti and elsewhere suggest a movement of the tide-wave from west to east in the higher latitudes and the reverse in the lower, xxv, 132; climate, as connected with atmospheric and oceanic currents, 133; deserts due to the fact that aerial currents of the region are passing from colder to warmer latitudes, 134. ----, synopsis of Meteorological Journal in New York city, for 1833, '34, xxviii, 154; --observed winds and cloud currents, 155; cold of southwest winds in winter, 157; barometric results, 157. ----, reply to _J. P. Espy's_ "Notes," xxviii, 310; --tides at Tahiti, 311; course of tide-wave in N. Atlantic, 313; southwest wind of the Andes, 314; correction of a barometrical inaccuracy, 315; general atmospheric currents due to the earth's rotation and orbital progression, as affecting the gravitation, 316; greatest influence of heat shown in land and sea breezes, 317. ----, gales and hurricanes of the Western Atlantic, with a chart, xxxi, 115; --character of, and causes, 115-119^f; hurricane of October, 1780, at Jamaica, showing the northwardly progression of, 120; hurricane of Barbadoes, October 10, 1780, 121; Barbadoes, Sept. 3, 1835, 122; rotatory scudding in hurricanes, 122; routes of various hurricanes, 125-127; Pacific systems of storms same as in the Atlantic, 128, 129. ----, relation of Gulf Stream to an opposite current on the N. American coast, xxxii, 349; --icebergs carried into the Gulf Stream by the deeper polar current, 351, 352; (boulders of Labradorite at Cocksackie, 351;) lower temperature on shoals and shores, due to the submarine current, 353. ----, meteorological sketches; on the atmosphere, currents, winds, clouds, fogs, rain, hail, storms, water-spouts, whirlwinds, trade winds, circuit winds, and land and sea breezes, xxxiii, 50; --deserts, variations of the barometer, 261. ----, meteorological journal at New York, for 1837, with average results for the preceding five years, including surface winds and cloud currents, and barometrical observations, xxxiv, 373. ----, on the courses of hurricanes, xxxv, 201; --tornado of 1835, 206; tyfoons of the China Sea, 209; Raleigh's tyfoon, 210^f; Canton tyfoon of August, 1832, 217; ibid of September, 1831, 218; hurricanes of Asiatic Seas, 220; law of atmospheric circulation, 222. ----, on columnar whirlwinds excited by fires, xxxvi, 50. ----, Raleigh's Tyfoon, xxxvi, 59. ----, meteorological register at New York city, for 1838 and 1839, with the mean results for the last seven years, xxxviii, 323.