GENERAL INDEX OF VOLS. 1 12 OF THE 



identity of electricity, &c., ii. 312 ; on 

 the prevention of the dry-rot, ii. 313; 

 on holding the breath for a lengthened 

 period, iii. 241 ; discoveries in mag- 

 neto-electric induction, on, iv. 11 ; re- 

 cent discoveries in electricity, iv. 291 ; 

 on the magneto-electric spark and 

 shock, V. 349, 444 ; reply to Dr. Davy, 

 vii. 337 ; M. PoggendorfF on his dis- 

 coveries, vii. 421 ; royal medal award- 

 ed to, viii. 150 ; on the magnetic rela- 

 tions and characters of metals, viii. 

 179 ; on a supposed new sulphate and 

 oxide of antimony, viii. 476 ; on the 

 condensation of tlie gases, in reply to 

 Dr. Davy, viii. 521 ; on a peculiar vol- 

 taic condition of iron, ix. 57, 122 ; on 

 the causes of the neutrality of iron in 

 nitric acid, x. 175. 



Farish (Prof.), notice of, xii. 437. 



Farquharson (Rev. J.) on the ice formed 

 at the bottom of running water, vii. 

 137. 



Farre (Dr.) on the structure of Polypi, 

 xi. 189. 



Feathers, process for taking impressions 

 from, xii. 451. 



Fedia, on the species of, vi. 380. 



Felis marmorata, a new species, x. 481 j 

 F. Darwinii, on the, xii. 213. 



Fellenberg (M.), method of dissolving 

 iridium, xii. 141. 



Fermentation, vinous, acetous, and pu- 

 trefactive, ix. 535. 



of sugar of milk, xii. 139; action 



of, on a mixture of oxygen and hydro- 

 gen gases, xii. 607. 



Ferns, on the structure of, iv. 253 ; re- 

 marks on some British, iv. 310. 



Ferrocyanuret of potassium and dilute 

 sulphuric acid, on the reaction of, vi. 97. 



Ferussac (Baron), notice of, x. 310. 



Fever, use of chloride of soda in, viii. 64. 



Fibres of cotton, form of, vi. 170, 231. 



Fielding (G. H.) on a new membrane of 

 the eye, i. 113 ; iii. 87 ; on the struc- 

 ture of the eyes of animals, iv. 14. 



Figures of vibrating surfaces, iii. 144. 



Fish, on the classification of, v. 459; 

 temperature of some, vi. 375 ; notes on 

 various species of, ix. 67, 139, 140, 352, 

 391, 490, 507 ; mode of preservation, 

 ix. 391 ; fossil, xii. 86. 



Fisher (W.W.), accountof a case of spina 

 bifida, X. 316, 486. 



(Rev. G.) on the nature and ori- 

 gin of the aurora borealis, vi. 59. 



Fishes, collection of, from Madeira, iv. 

 380 ; of the river Quorra, vii. 64 ; of 

 the island of Rathlin, vii. 492 ; fossil 

 beaks of four extinct species of, viii. 4 ; 

 fossil, viii. 72, 366. 



Fitch (R.) on the coralline crag, vii. 

 463. 



Fitton's (Dr.) notes on the history of 

 English geology, i. 147, 268, 442 ; ii. 

 37 ; notice on the section of the coast 

 near Hastings, iv. 49 ; on the Portland 

 and Purbeck strata, vii. 323. 



Flame from coal-gas, phenomena of, vii. 

 404. 



Flames, chemical, spectra of, ix. 3 ; gal- 

 vanic, spectra of, ix. 4 ; conducting 

 power of, for electricity, ix. 176. 



Flamingo, anatomy of, ii. 71. 



Fiamsteed and Newton, viii. 139, 211, 

 218,225. 



Flint-glass, on the reflection at the se- 

 cond surface of, at incidences of total 

 reflection, i. 57. 



Floating bodies, motion of, vii. 302. 



Flower, structure of the, ii. 125. 



Fluids, elastic :— evolved from volcanos, 

 iii. 159 ; vibratory motion of in tubes, 

 iii. 235 ; atomic constitution of, v. 33 ; 

 specific heat of, vii. 385. 



, on the resistance of, vii. 302 ; mo- 

 lecular forces of, viii. 89. 



, aeriform, specific heats of, xii. 101 . 



Fluorine, on, ix. 107, 149 ; xii. 105. 



and chlorine, combinations of chro- 

 mium with, ix. 151. 



Fluor spars, muriatic acid in, v. 78. 



Fog -bow, on a singular, ii. 151. 



Fogs, low, and stationary clouds, xii. 355. 



Forbes (Prof.) on an electric spark from 

 a natural magnet, i. 49 ; on the relative 

 positions of Chamouni and the con- 

 vent of St. Bernard, ii. 61 ; on the pro- 

 gress of meteorology, iii. 131 ; oncer- 

 tain vibrations in metallic masses hav- 

 ing different temperatures, iii. 303 ; iv. 

 15, 182 ; on the electricity of tourma-' 

 line, V. 133 ; on the refraction and po- 

 larization of heat, vi. 134, 205, 284, 

 366 ; vii. 349 ; xi. 542 ; xii. 545 ; on 

 the undulatory theory of heat, viii. 

 246 ; the Keith prize awarded to, viii, 

 424 ; on the mathematical form of the 

 Gothic pendent, viii. 449 ; on the tem- 

 peratures of certain hot springs, and on 

 the verification of thermometers, viii. 

 551 ; on the supposed origin of the de- 

 ficient rays in the solar spectrum, ix. 

 522 ; on the physical development of 

 man, x. 197 ; on the ascent of moun- 

 tains, X, 261 ; on terrestrial magnetic 

 intensity, xi. 58, 166, 254, 363 ; on 

 the magnetic dip, xi. 370 ; on meteors, 

 xii. 85. 



Forchamraer (G.) on changes of level 

 which have taken place in Denmark, 

 xi. 309. 



Forests, subterranean, iv. 282. 



