INDEX. 



Address, by Sir David Brewster, on opening the British Association 

 for 1850, 277 — Concluding Address by the President on the 

 adjournment of the Association to Ipswich in 1851, 382. 



Agassiz, Professor, on the distribution of animals, 1-30 — Glacial 

 theory of erratics and drift, 97 — Discovery of coral animals on 

 the coast of Massachusetts, 179 — On the fossil crinoids of tho 

 United States, 177 — On tlie circulation and digestion of the 

 lower animals, 179 — On the metamorphoses of the lepidoptera, 

 180 — On the zoological character of young mammalia, 181 — 

 The Manatus or sea cow, tho embryonic type of the pachyder- 

 mata, 182 — On the differences between the various animal 

 types in the succession of organized beings through the whole 

 range of geological times, 160 — On the natural relations be- 

 tween animals and tho elements in which they live, 193 — On 

 Lamprey eels, and their embryonic development and place in 

 tho natural history system, 242 — On the salmonidse, 144 — 

 Classification of vertebrata from embryonic and palaeozoic data, 

 395. 



Adie, John, F.R.S.E., description of the marine telescope, 117 — Ex- 

 periments to discover the cause of the change which takes place 

 in the standard points of thermometers, 122. 



Adie, Richard, on the causes which influence the changes of Isother- 

 mal Lines, 236. 



Adulteration of drugs, account of, 185. 



Air-Whistle, noticed, 187. 



Air and Water of Towns considered, by Dr R. A. Smith, 347. 



Analogy, new, in the periods of rotation of the primary planets dis- 

 covered by Daniel Kirkwood of Pottsvilie, Pennsylvania, 166. 



Anderson, Dr, on Dura Den fossil fishes, 368. 



Anderson, Thomas, Dr, on iodine and codeine, 367. 



Anemometer, new integrating, its working, noticed by Mr Follet, 

 327. 



Argyll, Duke of, discovery of Tertiary rocks on the island of Mull, 

 350. 



Arsenic in chalybeate springs, 175. 



Anemometer, new integratory, noticed, 327. 



Beattie, Mr George, on a new door-spring, 357. 



Bennett, Professor, on the molecular element of growth in plants 

 and aninials, 373. 



Birds of the Faroe Islands noticed by J. Wolley, Esq., 371. 



British Association for 1850, Proceedings of, 275-296. 



Brongniart, M., chronological exposition of the periods of vegetation, 

 and the different floras which have succeeded each other on the 

 earth's surface, 72. . 



Bryson, A., remarks on a bone cave near the mouth of the North 

 Esk, 253. 



