564 



INDEX. 



54 ; on the voltaic battery, 329, 333, 

 421. 

 Darwin (C.) on the effects produced by 

 the ancient glaciers, and on the boulders 

 transported by ice, 180. 



Davies (T. S.) on Pascal's mystic hexa- 

 gram, 37 ; on the employment of po- 

 lar coordinates in the equation of a 

 straight line, 190. 



De la Rue (W.) on the agency of caloric 

 in modifying the state of aggregation 

 of the molecules of bodies, 3l3. 



De Morgan (Prof. A.) on Fcrnel's mea- 

 sure of a degree, 22. 



Density, mean, of the earth, 111. 



Devonian system, on the position of the 

 Cornish killas in the, 25. 



Dew-point, influence of the, on vegeta- 

 bles, 1. 



Dialytic method of elimination, on the, 

 534. 



Didvmium, description of the new metal, 

 239. 



Dioptase, on the optical constants of, 277. 



Dove (Prof.), experiments in magneto- 

 electricity, 33. 



Drach (S. M.) on Sir D. Brewster's de- 

 ductions from the hourly observations 

 at Leith, 43 ; on the aggregate mass 

 of the binary star, 61 Cygni, 528. 



Draper (Dr. J. W.) on certain spectral 

 appearances, and on the discovery of 

 latent light, 348; on a class of chemical 

 ravs analogous to the rays of dark heat, 

 453. 



Dufrenoy (M.) on Greenovite, 246. 



Earnshaw (S.) on the motion of luminous 

 waves in an elastic medium, 46 ; on 

 the theory of the dispersion of light, 

 122, 217, 340, 437. 



Earth, on the mean density of the, 111. 



Earthquakes in Cornwall, 153. 



Eclipse, solar, of July 18, 1841, on the, 57. 



Electrical Society of London, proceedings 

 of the, 61,310, 404, 484. 



Electricity, experiments in, 33 ; on the 

 transfer of mineral substances through 

 fluids, by, 64. 



Electro-magnetic coils, use of iron wire 

 for, 411. 



Electro-tint, remarks on, 62. 



Electrotype manipulation, 61. 



Elements, atomic weights of some, 409. 



Elevation and denudation of the district 

 of the lakes of Cumberland and West- 

 moreland, 468, 



Ellipse, on the rectification and quadra- 

 ture of the spherical, 54. 



Eisner (M.) on the blue colour of ultra- 

 marine, 156. 



Embryology, on the progress of, 337. 



Erdmann (M.) on haematoxylin, 446. 



Everest (Rev. R.), geological observations 



on the Himalaya mountains, 366. 

 Ewart (P.), notice of the late, 327. 

 Farquharson (Rev. J.) on a remarkable 



aurora borealis, 52. 

 Femel's measure of a degree, remarks 



on, 22. 

 Ferrocyanic acid, anhydrous preparation 

 of, 325. 



Fibre, observations on, 220. 



Fibrine, on the structure of, 109, 171, 

 241. 



Fielding (G. H.) on the causes of the in- 

 fluenza, 52. 



Fisher (Prof.) on the development of the 

 spinal ganglia, and on malformations 

 of the nervous system, 485. 



Fluid motion, remarks on, 29, 101, 297, 

 423. 



Forbes (J. D.) on the transparency of 

 the atmosphere, and the law of extinc- 

 tion of the solar rays in passing through 

 it, 223. 



Fossil bones found on a raised beach near 

 Plymouth, notice of, 543. 



Fownes (Dr. G.) on the preparation of 

 artificial yeast, 352 ; on the prepara- 

 tion of hippuric acid, 382 ; on South 

 Sea guano, 385. 



Francis and Croft's notices of the investi- 

 gations of continental chemists, 15, 

 278, 446. 



Francis (Dr. W.) on the fruit of Meni- 

 spermum Cocculus, and on stearophanic 

 acid and its salts, 161. 



Freezing cavern, observations on a, 358, 

 362. 



Frend (Mr.), notice of the late, 510. 



Fresenius (R.) on the salts of uvic acid, 1 8. 



Ganglia, on the development of the spinal, 

 and on the nervous system, 485. 



Galloway (T.) on Femel's measure of a 

 degree, 22. 



Gardner (Dr. D. P.) on the influence of 

 the dew-point on vegetables, 1. 



Gassiot (J. P.) on the polarity of the vol- 

 taic battery, 485. 



Geological Society, proceedings of the, 

 141,306,365,540. 



Geology : — on the position of the Cornish 

 killas in the Devonian system, 25 ; on 

 the stratified rocks inferior to the old 

 red sandstone, 141 ; effects produced 

 by the ancient glaciers of Caernarvon- 

 shire, 180 ; on shells and corals in a 

 conglomerate at Malvern, 288 ; on the 

 geology of the United States, and on 

 Stigmaria clay, 306. 



Geometry, analytic, on a theorem in, 176, 

 444. 



, the difficulties of elementary, 



&c, review of the, 405. 



