424 



facture of glass for optical purposes, 

 ii. 383. 



Farey (J.) account of the great Der- 

 byshire denudation, i. 402. 

 Farquharson (Rev. J.) on a definite 

 arrangement and order of the ap- 

 pearance and progress of the Aurora 

 borealis, and its height above the 

 earth, ii. 360 ; on the influence of 

 the Aurora borealis on the magnetic 

 needle, ii. 391. 



Fat, on the formation of in the intes- 

 tines of animals, i. 462. 

 Ferrane and Ferranea, i. 426. 

 Ferruretted chyazic acid, ii. 21. 

 Fibre, muscular, examination of a, ii. 



259. 

 Figure of the earth, i. 413, 435 ; ii. 



118, 140, 290. 

 Figure of the planet Saturn, i. 203, 



246, 298. 



Figure of the planets, i. 341. 

 Finite extent of the atmosphere, on the, 



ii. 160. 

 Fire-damp of coal mines, on, ii. 30, 



32, 35, 62. 



Fish : on the muscles of, i. 210; on the 

 intervertebral substance in, i. 329 ; 

 serpentiform, on a newly discovered 

 genus of, ii. 302 ; sex not given to 

 the spawn of at an early period of 

 its growth, ii. 347. 



Fisher (G.) on the errors in longitude 

 arising from the action of the iron in 

 ships, ii. 130. 



Flame, researches on, ii. 59. 

 Flies, on the feet of, ii. 38, 52. 

 Flinders (M.) on the differences in the 

 magnetic needle, arising from an al- 

 teration in the direction of the ship's 

 head, i. 187 ; observations upon the 

 marine barometer, i. 230. 

 Fluid conductors, on certain motions 

 produced in, when transmitting the 

 electric current, ii. 208. 

 Fluids: on the resistance of, to bodies 

 passing through them, 327 ; on the 

 propagation of heat in, i. 133 ; on the 

 cohesion of, i. 171 ; experiments to 

 prove that they pass from the sto- 

 mach to the circulation of the blood 

 without going through the thoracic 

 duct, i.394; expansible, on the effect 

 of temperature on the refractive in- 

 dex and dispersive power of, ii. 345. 

 Fluoboracic acid gas, i. -137. 



Fluor spar, experiments on the sub- 

 stances produced in chemical pro- 

 cesses on, i. 475. 



Fluoric acid, analysis of, i. 321 ; on 

 different combinations of, i. 437. 



Fluoric compounds, experiments on, i. 

 481. 



Fluoric gas, i. 437. 



Fcetus, human : in which the circula- 

 tion of the blood was carried on with- 

 out a heart, i. 327; extraordinary, 

 i. 36; found in the ovarium, ii. 123; 

 on the functions of the intestinal 

 canal and liver of, ii. 361. 



Foot of a Chinese female, anatomical 

 description of, ii. 373. 



Fossils : bones found in caverns, ii. 

 66, 142, 165, 186 ; fossil elk of Ire- 

 land, ii. 246 ; human skeleton from 

 Guadaloupe, i. 487 ; remains of an 

 animal from the cliff between Lyme 

 and Charmouth, i. 512; ii. 51, 82; 

 shells, ii. 198, 221 ; skeleton of the 

 proteo-saurus, ii. 113, 128; the 

 iguanodon, &c., ii. 234. 



Foster (Lieut. H.), account of experi- 

 ments made with an invariable pen- 

 dulum at Greenwich, at Port Bowen, 

 and on the eastern side of Prince 

 Regent's Inlet, ii. 290 ; on the diur- 

 nal variation of the magnetic needle 

 at the whale fish islands, ii. 293 ; 

 on the diurnal changes in position of 

 horizontal needle at Port Bowen, ii. 

 293 ; on the daily changes of inten- 

 sity in the dipping and horizontal 

 needles at Port Bowen, ii. 293 ; re- 

 petition of Mr. Christie's experi- 

 ments on the magnetic properties 

 imparted to iron by rotation at Port 

 Bowen, ii. 293 ; observations to de- 

 termine the amount of atmospherical 

 refractions at Port Bowen, ii. 296 ; 

 corrections to the reductions of his 

 observations on atmospherical re- 

 fractions at Port Bowen, ii. 308 ; on 

 the diurnal changes of magnetic in- 

 tensity in the dipping and horizontal 

 needles at Spitsbergen, ii. 344. 

 Fox (R. W.) on the electro-magnetic 

 properties of metalliferous veins in 

 the mines of Cornwall, ii. 412. 

 Freezing at a distance, method of, i. 



448 ; freezing of mercury, i. 474. 

 Friction and abrasion of the surfaces of 

 solids, experiments on, ii. 364. 



