513 



Colour-blindness, 226, 299. 



Combinations, on a problem of, 326. 



Comenic Acid, on certain salts of, 54. 



Comenic and Meconic Acids, Ethers 

 and Amides of, 277. 



Comet 3 of 1853, on the physical 

 appearance of, 207. 



Compressibility of water, 58. 



Connell (Prof.) on a new Hygrometer 

 or Dew- Point Instrument, 228. 



Cotarnine, behaviour of, with Iodide 

 of Ethyl, 245. 



Coventry (Andrew). Notice of an 

 Antique Marble Bust, 115. 



Craigleith Sandstone, analysis of, 390. 



Crania of the Cafiirs and Hottentots, 

 456. 



Crinoidea, observations on, 433. 



Crowder (William) on the Fatty Acid 

 of the Cocculus indicus, 107. 



Crystalline Structure, on the produc- 

 tion of, in crystallized powders, by 

 Compression and Traction, ] 78. 



Dallas (E. W.) on the Structure of 

 Diatomaceae, 256. 



Dalmahoy (James) on the weight of 

 Aqueous Vapour, condensed on a 

 cold surface, under given conditions, 

 43. 



Danson (Mr and Dr Muspratt) on Car- 

 mufellic Acid, 65. 



Davidson (Captain) on Rifle Cannon, 

 142. 



Davy (Dr John). Some observations 

 on the Charr (Salmo umbla), rela- 

 ting chiefly to its generation and 

 early stage of life, 125. 



Some observations on Fish in 



relation to Diet, 197. 



on the impregnation of the 



Ova of the Salmonidse, 219. 

 Some observations on the Sal- 



monidae, 267. 



An account of some experi- 



ments on certain Sea-weeds of an 

 edible kind, 363. 

 Notice of the Vendace of the 



Derwentwater, Cumberland, 428. 

 on the Urinary Secretion of 



Fishes, with some remarks on this 



secretion in other classes of animals, 



452. 

 Delta of the Irrawaddy, 471. 

 Destructive distillation of Animal 



Substances, on the products of, 64, 



238, 505. 

 Diatomaceae found in the Infusorial 



earth of Mull, 58, 176, 204. 

 Diatomaceae from Glen Shira, 241, 358. 



Diatomaceae from Firth of Clyde and 

 Loch Fine, 442. 



Diatomaceae, new British species, 306. 



Diatomaceae, structure of, 256. 



Diatomaceae, on the value of their ge- 

 neric and specific characters, 204. 



Diurnal Variation of the Needle, 20. 



Dynamical theory of Heat, 48. 



Dynamical Top, for exhibiting the 

 phenomena of the motion of a sys- 

 tem of invariable form about a 

 fixed point, 503. 



Earth's mean density, 364. 



Earth's Crust, laws of structure of its 

 more disturbed zones, 387. 



Earth's motion, 503. 



Eclipse of the Sun on 28th July 1851, 

 observed at Goteborg, 73. 



Eclipse of the Sun on 28th July 1851, 

 as seen on the west coast of Norway, 

 78. 



Eclipse, on the red prominences seen 

 during total Eclipses of the Sun, 

 79, 135, 136. 



Eildon Hills, on the geology of, 53. 



Elasticity, centrifugal theory of, 86. 



Ethers and Amides of Meconic and 

 Comenic Acids, 277. 



Ethnic Glossology, 25. 



Ethnology and languages of India, 24. 



Ethyl and Amyl, on the action of com- 

 pounds of, on some Vegetable Alka- 

 loids, 244. 



Ethylostrychnine, action of Iodine of 

 Ethyl on, 251. 



Eye. Relations between simple and 

 compound Eyes, 487. 



Fatty Acids, Amides of, 305. 



Fermat's Theorem, 371. 



Fleming (Prof.) on the Structural 

 characters of Rocks, 169, 197, 268. 



What is Coal ? 216. 



Remarks on the Coal-Plant 



termed Stigmaria, 316> 



Fluorine, on two new processes for the 

 detection of, when accompanied by 

 Silica, and on its presence in Gra- 

 nite, Trap, and other igneous rocks, 

 and in the ashes of recent and fos- 

 sil plants, 143. 



Forbes (Prof. E. & J. Goodsir) on new 

 Marine Animals discovered during 

 a cruise among the Hebrides, 27. 



Forbes (J. D.). Farther observations 

 on Glaciers, — (1.) on the movement 

 of the Mer de Glace down to 1850. 

 (2.) Observations by Balmat, in con- 

 tinuation of those detailed in the 



