INDEX. 



Aboriginal tribes of India, account of, by Major-General J. Briggs, 



F.R.S., 331. 

 Adie, Richard, on the connection between the colour and the mag- 

 netic properties of bodies, 44. 

 Adie, John, F.R.S.E., on the total eclipse of the sun, July 28, 1861, 



observed at Goteburg, 371. 

 Alps, the changes of, at different geological periods, by Sir R. I. 



Murchison, 31. 

 Anemometer, observations on, 169. 



Aurora Borealis, its periodicity considered, by Dr Olmsted, 293. 

 Biographical Notices of De Blainville, 132 ; of Dr Pye Smith, 133 ; 



and M. Beudant, 135. 

 Cave of Kentucky described, 227. 

 Caoutchouc, observations on, by Mr Brockedon, 67. 

 Cochineal, culture of, 204. 

 Coffee, its principal varieties noticed, 202. 



Davy, Dr John, on the temperature of man within the Tropics, 74. 

 Donarium, a new metal, observed in Orangite, 193. 

 Dead Sea, account of, by R. J. Graves, M.D., 315. 

 Development and Succession in the animal and vegetable kingdoms 



examined, 1, 213. 

 Doctrine of specific organic centres, 197. 

 Deposits, superficial, of Switzerland and Piedmont, 300. 

 Eclipse, total of, 1851, 76, 361, 371. 



Embryonic development, its relations to permanent forms, 196. 

 .Eupyrchroite Phosphorite, by Ch. T. Jackson, M.D., 328. 

 Faraday, Professor, on atmospheric magnetism, 62. 

 Forbes, Professor Edward, on the estuary beds and the Oxford clay 



in the Island of Skye, 92 — On submarine zoology, 386. 

 Forbes, Professor J. D., on the intermitting brine springs of Kis- 



singen, 139. 

 Freezing of water, as efiected by pressure, 193. 

 Foucault, M. L., his demonstration of the earth's motion of rotation 



by means of the pendulum, 101. 

 Fraas, Oscar, on the effects of local influences upon the formation 



of strata, 106. 

 Good, J. W., on the total eclipse of the sun, July 28, 1851, as ob- 

 served at Elsinore, 361. ' 

 Gypsies of Great Britain, 394. 

 Holothuria intestinalis, notice of, 195. 

 Hybridity, the four degrees of, 199. 

 Hybrids, Feline, notice of, 199. 



Impressions of rain-drops in ancient and modern strata, 70. 

 Iodine, its general distribution, 136 — Its occurrence in aluminous 



slates, 137 — Its occurrence in the atmosphere, rain, and snows, 



138. 



