INDEX. CX1X 



46, 47, 50. On aerolites, p. 117; Note 70. On the proper motion of the 

 whole solar system, p. 134 ; Note 105. On the mass of 61 Cygni, p. 138 ; 

 Note 107. On measurements of meridian arcs, p. 157 ; Note 130. On the 

 possible influence of geological changes on gravitation, Note 349. 

 Biot, on twilight, p. 110, 133; Note 63, 100. Pendulum experiments, Notes 131, 

 133, 136 (Editor). 



(Kdouard), on Chinese observations of comets, p. 94, 102. On Chinese 



records of aerolites, p. 118 ; Note 77. 



Bischof, on the internal heat of the globe, Notes 194, 199, 235, 261, 348. 

 Blumenbach, on races of men, p. 353. 



Boguslawski, on a shower of aerolites in 1366, p. 118; Note 66. 

 Bon-iland and Humboldt, on the great fall of aerolites at Cumana, November 



1799. Note 66. 



Bopp, on Sanscrit roots, and on the derivation or the word Kosmos, Note 27. 



Boussingault, on the depth below the surface of the earth at which the mean 



annual temperature of the air is found at all seasons within the tropics, p. 165, 



208; Notes 139, 204. On the earthquake in New Granada, 1827, p. 195. On 



extreme dryness at Quito, p. 331, 332. On the decrease of temperature with 



increasing altitude in the chain of Andes, Note 6. On the temperature of the 



hot springs of Las Trincheras, p. 209. On the composition of the atmosphere, 



p. 305 ; Notes 375, 379. On the mean annual quantity of rain at some places 



in South America, Note 406. 



Bouvard, discussion on the question of a lunar atmospheric tide, and failure in 



detecting it in the barometric observations at Paris, Note 381. 

 Bramuios y truenos, loud subterranean noises heard at Guanaxuato, p. 196; 



Note 187. 



Brandies, on the velocity of the motion of aerolites, p. 112. On the diameter of 

 ditto, Note 62. On the elevation of ditto, p. 112; Note 67. On a fall of 

 ditto in December 1798, Note 74. 



Bravais, on the aurora, p. 185, 187. On the horary variation of the barometer in 

 70 U N. latitude, p. 309 ; Note 383. On the height of the lines of the ancient 

 sea level near North Cape, p. 287 ; Note 352. On the amount of rain in 

 different seasons in middle Europe, Note 405. 



Bronguiart (Adolphe), luxuriance of the ancient vegetation independently of lati- 

 tude, p. 206. On the fossil flora of the coal formation, p. 270 ; Note 323. 



(Alexandre), on fossil geology, p. 262. 



Brown (Robert), on peculiar molecular movements in vegetables, and generally 



in matter reduced to an extreme state of division, p. 340. 



Buch (Leopold von), theory of the elevation of mountain chains and continents, 

 p. 27, 286 ; Note 357. On craters of elevation and the circular form of the 

 island of Palma, p. 214 ; Note 212. On volcanoes and volcanic islands, p. 228, 

 230, 235; Notes 226, 231. On metamorphic action, p. 249, 252, 255; Notes 

 271, 282, 288. On the changes of level of the Scandinavian coasts, p. 287. 

 On the origin of the dolomite and masses of granular limestone containing 1 

 garnets, &c. in the neighbourhood of Vesuvius, p. 224; Note 221. On a re- 

 cent sea-formed bank of oolite near Lancerote, p. 238 ; Note 245. On the 

 origin of certain conglomerates, p. 258; Note 296. On ceratites, arietes, 

 and goniatites, p. 266; Note 311. On the origin of erratic blocks, p. 274; 

 Note 333. On the barometric windrose, Note 387. 



(Buckiaud, on coprolites, Note 297. On the floras of the coal formation and brown 

 coal, Notes 32j, 332. 



