436 



INDEX. 



Temperature of the oceanic currents, 130. 



Tempests, cause of, 125. 



Ten days in Ohio, from the diary of a nat- 

 uralist, 217. 



Terrestrial magnetism, new theory of, 425. 



Tertiary strata of the U . States, new work 

 on, 413. 



Thompson, Hon. "Wm. A., on vitality of 

 toads in firm materials, 41. 



Thunder storms, 128. 



Tides, phenomena of, 132. 



Toads, vitality of, inclosed in firm materi- 

 als, 41. 



Torpedo, Dr. Davy's experiments on, 187. 



Tourmaline, brown, 349. 



Trade winds, circuitous character of, 124. 



Transactions of Lit. and Hist. Soc. Que- 

 bec, 211. 



Trilobites, locaHty of, 346. 



, new species of N. American, 



334. 



Typhoons, 121. 



V. 



Vegetables, fossil, 108. 

 "Volcanic ashes, showers of, 129. 

 Volcanos of Hawaii, 199. 



W. 



Warm air, mode ofheating apartments by 

 290. 



Wartmann, on Saturn's'ring'and comet of 

 Biela, 191. 



Water, reservoirs of in buildings as secu- 

 rity in fires, 301. 



Water spouts, causes and character, 47, 

 126, 127. 



West Indies, hurricanes and storms of, 

 114, 128. 



Whirlwinds, characteristics of, 127. 



constitute the essential'char- 



acter of all violent storms,;'117,125,129, 

 excited by fires, 127. 



Williams, W. H., meteorol. journal at Sa- 

 vannah, 211. 

 Winds, character and velocity of, 125. 

 — observations on, 135. 

 periodical, 124, 126. 



With am, H., on fossil vegetables, 108. 

 Wood in Ohio, fossil, 104. 

 Wright, E. Esq., on fluxional ratio, 93. 

 Writing upon a metallic surface, perma- 

 nent after fusion, 197. 



Y. 



Young's Elements of Geometry, 206. 



Z. 



Zanesville, 0., remarks on, 228. 

 Zoology of Italy, new work on, by Chas. 

 Lucien Bonaparte, 424. 



