See Volcanoes. 

 urdii9, Professor, his notes on the 



temperature of various springs in 



Greece, 21 9, 220. 

 Cuvier, one of the founders of the 



Archaeology of organic life, '275, 276; 



discovery of fossil crocodiles in the 



tertiary formation, 276. 



Daimachos, on the phenomena attend- 

 ing the fall of the stone of /Egos 

 Potamos, 122. 



Dalman, on the existence of Chiouoea 

 araneoides in polar snow, 353. 



Dalton, observed the southern lights in 

 England, 192. 



Dante, quotation from, 328. 

 Darwin, Charles, fossil vegetation in 

 the travertine of Van Diemen's Land, 

 221 ; central volcanoes regarded as 

 volcanic chains of small extent on 

 parallel fissures, 237; instructive 

 materials in the temperate Zones of 

 the Southern Hemisphere for the 

 study of the present and past geo- 

 graphy of plants, 286; on the fiord 

 formation at the south-east end of 

 America, 297 ; on the elevation and 

 depression of the hottom of the South 

 Sea, 302; rich luxuriance of animal 

 life in the ocean, 314,315; on the 

 volcano of Aconcagua, 338. 



Daubeny, on volcanoes. See Trans- 

 lator's notes, 152, 198, 199, 206, 

 215, 221, 225, 228, 231, 232,233, 

 235, 213, 244. 



Daussy, his barometric experiments, 

 303; observations on the velocity 

 ot the equatorial current, 312. 



Davy, Sir Humphrey, hypothesis on 

 active volcanic phenomena, 234; on 

 the low temperature of water ou 

 shoals, 314. 



Dead Sea, its depression below the 

 level of the Mediterranean, 301. 



Dechen Von, on the depth of the coal 

 basil* of Liege, 151. 



D?lcrois. See Corabceuf. 



Descartes, his fragments of a contem- 

 plated work, entitled ' Monde,' 50; 

 on comets, 128, 129. 



Deshayes and Lyell, their investiga- 

 tions on the numerical relations of 

 extinct and existing organii life 

 Y.I 



Dicoearchus, his 'panuiel of the di 

 phragrn,* 293. 



Diogenes, Laertius, on the aerolite ot 

 &SO* Potamos, 103, 109, 122, 123. 



D'Orbigny, fossil remains from the 

 Himalaya and the Indian plains of 

 Cutch, 279. 



Dove, 011 the similar action of the de- 

 clination needle to the atmospheric 

 electrometer, 188; 'law of rotation,' 

 321 ; on the formation and appear- 

 ance of clouds, 322; on the differ- 

 ence between the true temperature 

 of the surface of the ground and the 

 indications of a thermometer sus- 

 pended in the shade, 332; hygro- 

 metric windrose, 340, 341. 



Doyere, his beautiful experiments on 

 the tenacity of life in animalcules, 

 354. 



Drake, shaking of the earth for suc- 

 cessive days in the United State* 

 (1811-12), 207. 



Dufrenoy et Elie de Beaumont, Geo- 

 logie de la France. 253, 258, 259, 

 260,261,263,267,268. 



Dumas, results of his chemical analysis 

 of the atmosphere, 317. 



Dunlop, on the comet of 1825, 88. 



Duperrey, on the configuration of the 

 magnetic equator, 177; pendulum 

 oscillations, 158. 



Dupre/., influence of trees on the in- 

 tensity of electricity in the atmo- 

 sphere, 343. 



Eandi, Vassalli, electric perturbation 

 during the protracted earthquake of 

 Pignerol, 202. 



Earth, survey of its crust, 54, 55 ; rela- 

 tive magnitude, &c. in the Solar Sys- 

 tem, 80 82; general description ol' 

 terrestrial phenomena, 145 3o'9; 

 geographical distribution, 152, '53; 

 its mean density, 161 164; internal 

 heat and temperature, 164 1(58; 

 electro-magnetic activity, 1*59 186; 

 conjectures on its early high tempera- 

 ture, 164; interior increase of heat 

 with increasing depth, 152; greatest 

 depths reached by human labour 

 148, 149; methods employed to in. 

 vestigate the curvature of its surface, 

 156 16U; reaction ol the iuteriol 

 on the external crust, 152, 197 



