CXX11 INDEX. 



the parallel roads of Glen Roy, Note 352. On the altitude of the volcano of 

 Aconcagua, seen on one occasion entirely denuded of snow, p. 329 ; Note 402. 



Davy (Sir Humphry), renounced his chemical hypothesis of volcanic eruptions, 

 p. 226. On a cause of the low temperature of water on shoals, p. 302. 



Daussy, investigations on the influence of the height of the barometer on the level 

 of the sea, p. 290, 310. Computation of the velocity of the equatorial current, 

 p. 300. 



Dechen (Von), on the depth of the Liege coal basin and of certain mines, Notes 

 124, 125. 



Delcros, see Coraboeuf and Delcros. 



Density of comets, earth, planets, &c. see those heads respectively. 



Descartes, fragments of an intended work, entitled " Monde," p. 55. On the 

 tails of comets, Note 92. 



Deshayes and Lyell, on the numerical relations of the successive types of organic 

 life, p. 264. 



Dicearchus, on the greatest extent of the old continent from east to west, some- 

 times termed the "parallel of the diaphragm of Dicearchus," p. 280, 281. 



Diogenes of Apollonia, on aerolites (especially the stone of ^Egos Potamos), and 

 on the origin of heavenly bodies, p. 124. 



D'Orbigny, fossil ammonites and gryphaea from the Himalaya, p. 266. 



Dove, "law of rotation" of the winds, p. 310; Note 388. On the form of clouds, 

 p. 311. On the hygrometric windrose, p. 331 ; Note 404. On the resem- 

 blance between the disturbance of the needle during an aurora anil the move- 

 ments of an atmospherical electrometer, Note 170. On the diurnal variation 

 of the pressure of the dry air at Buitenzorg in Java, Note 382 (Editor). On 

 the difference of the heat received by the ground and the indications of a 

 thermometer placed in the shade, Note 396. 



Doyere, experiments on infusoria, Note 425. 



Drake, tremblings of the earth in the United States in 1811 and 1812, p. 198; 

 Note 188. 



Due, magnetic observations in Siberia, Note 158 (Editor). 



Dufre"noy with Elie de Beaumont, Description ge"ologique de la France, Notes 

 238, 254, 260, 270, 276, 284. 



Dumas, chemical analysis of the atmosphere, p. 305; Note 378. 



Dtfperrey, magnetic equator, p. 172 ; Note 155. Pendulum experiments, Note 131. 



Duprez, influence of trees on atmospheric electricity, p. 334 ; Note 413. 



Earth, its place in the solar system, p. 82. General view of the earth, p. 145 

 154; and terrestrial phenomena generally, 145, 357. Figure of the, p. 30, 

 154159; Notes 127135. Density of the, p. 159161 ; Note 136. Tempe- 

 rature of, p. 161167 ; Notes 137140. Mean temperature unchanged from 

 the time of Hipparchus, p. 165, 166 ; Note 140. Early high temperature, 

 p. 28, 161164. Internal heat at increasing depths, p. 27, 151, 162164, 

 189 ; Notes 137, 138. Reaction of the interior on its exterior generally, p. 27, 

 189235. General view of this reaction, 189191. 



Earthquakes, p. 191205; Notes 180193. Peculiar impression produced by 

 earthquakes on men and animals, p. 204. Of Riobamba, p. 192, 193. Of 

 Lisbon, p. 197. Noises accompanying earthquakes, p. 194 197. 



Eandi (Vasalli), on electric disturbance during earthquake movements in Pied- 

 mont, Note 184. 



Editor, his Preface, p. vii. ix. Notes added by him to Notes 132 and 136, on 



