—— aS 
Index. 477 
Electrical connecting wire, on the funda- 
mental state of the phenomena of, 1. 
Electro-magnetic experiment, new one, 
+ 318. , 
Essential oils, their smell destroyed fixed 
oils, 388. 
Experiment, electro-magnetic, new one, 
318. 
Extent, finite, of the atmosphere, 251. 
F. 
Faraday, Mr. on the hydriodide of carbon, 
153. 
Figuier, M. on the preparation of chloride 
_ of gold and sodium, 156. 
Fire, Greek, on the, 390. 
Fluoboric acid, effects of, upon. Brazil 
wood paper, 24. 
Fluoric acid, effects of, upon Brazil wood 
paper, 24. 
For, crystalline, of sulphate of potash, 
on the, 342. 
Fox, Mr. R. W. on the temperature of 
mines, 440. 
Frauenhofer’s experiments on the illumi- 
_ nating powers of the different rays, 157. 
Fruits, green, influence of, upon the air, 
154. 
Fyfe, Dr. analysis of tutenag, 236. 
G. 
Ganges, extract of Capt. Hodgson’s jour- 
nal of a survey to explore the source of, 
31, 99. 
Gases, specific gravity of, remarks on the 
influence of moisture in modifying, 195. 
———_-—— modification of, 
by moisture, 29, 257, 
Geological remarks, 83. 
: Society, proceedings of, 308, 
388, 
Geology of Snowdon and the surrounding 
country, sketch of, 231. 
Gibbsite, notice of a new mineral so 
named, 470. 
Glass, ductility of, an account of several 
. circumstances connected with, 358. 
Gold and sodium, chloride of, 156. 
Gravity, specific, modification of, by moist~ 
ure, 29, 257. 
Greek fire of the Middle Ages, on the, 
390. 
Greenland, notice of Capt. Scoresby’s 
voyage to, 277. 
Groening, M. on the alkohometrical ap- 
plication of the thermometer, 396, 
H. 
Hakewell, M. notice of his paper on the 
Stonesfield slate pits, 70. 
Hare, Dr. account of his improved defla~ 
grator, 119. 
Haiiy, Abbé, account of the death of, 231. 
Herapath, Mr. observations upon D.’s an~ 
swer to C.’s remarks upon, 197. 
Hoboken, magnesian minerals of, 75. 
Hodgson, Capt. extracts from his journal 
during a survey of the sources of the 
rivers Ganges and Jumna, 31, 99, 
Howard, Mr. R. meteorological tables, by, 
79, 189, 239, 319, 399, 473. 
Hydriodic acid, effects upon Brazil wood 
paper, 24. 
Hydriodide of carbon, discovery and coms 
position of, 153. 
Hydrogen gas, on the application of, to 
produce a moving power in machinery, 
62. 
——. on sounds excited in, 172. 
and tin, compound of, 136. 
Hypophosphorous acid, effects of, upon 
Brazil wood paper, 25. 
Lb 
Iceland, volcano in, 234. 
Jeffersonite, account of, 234. 
ee Royal, of Cornwall, report of, 
Jodic acid, effects upon Brazil wood pa- 
per, 24. 
Jones, Mr. on the method for finding the 
sum of all the coefficients in the expan- 
sion of a multinomial, 27. 
Iron, chromate of, analysis of, 76. 
—- ore from Brazil. analysis of, 310. 
—— different kinds of, magnetic power 
of, 381, 
Jumna, extract of Capt. Hodgson’s jour- 
nal of a survey to explore the source of, 
ST5/99: 
Juyenas, remarkable phenomenon which 
occurred at, 72. 
K. 
Kirkdale, account of bones found ina cave 
at, 133, 173. 
Knives, case of a man swallowing, 314. 
L. 
Lamps, on some improvements in, 363. 
Laugier, M. analysis of the aerolite which 
fell at Juvenas, 75. 
Leslie, Mr. on sounds excited in hydro- 
gen gas, 172. 
Light, has no action on corrosive subli- 
mate, 64, 
Lime, tungstate of, analysis of, 471. 
Lindisfarn, on the geology of, 426, 
