Li Dns 
Heat. Effect of, in combustion, $ ; Ex- 
per.on 7; Work on 136 
Heming on origin of nations, 65, 130 
Hempel’s method of forcing fruit-trees, 
411 
Higgins, the author of the Atomic 
theory, 407 
Home, on medicines for gout, 428 
Hunt's evidence on steam engines, §&3 
Thbetson’s physiology of vegetables, 341 
Inglis on ebbing and flowing springs, 81 
Jodine. Ure’s process to obtain 161 
Iron Bridge, on principle of tenacity, 
389 
Java. Boiling springs of, 462 
Jessop’s evidence on boilers, 327 
Xnight on expansion and contraction of 
timber, 437 
Laplace on Saturn’s ring, 400 
Lean’s evidenceon steam engines 61 
Life Annutites. Theorems for value of, 
164 
Light. Bompass on, 136 
LInght. On component parts of S66 
Lighining, Queries on death by 3:5 
Lithography, 464 
Malvern Waters. Analysis of 149 
Mammoth. Another found 892 
Mathematical question, 115 
Maudeslay’s evidence on steam engines, 
172 
Meat, to preserve, 74 
Mercury. On purifying 348 
Meteor seen in December, 469 
Metecrolugy 77, 156, 236, 319,395,470 
Mineral Cameleon. Onchange of co- 
jour in 291 
Mineralogy, 116, 189 
Mountain Baremeter. New scale for, 316 
Mudge on Trigonometrical survey,40; 
on non-descript fish 391 
Muriate of Ammonia, Decomposition 
of, 213 
Muriate of Mercury, &c. « 457 
Murrey (J) on safety lamps, 74, 143 ; 
on vegetation, 144, 460; on blow- 
pipe, 145; on galvanic troughs, 145, 
312; on safety furnace, 217; on 
chlorine, 457 
Music, 115, 321 
Nautical Almanac. Errata in, 233, 440 
Nervous influence identified with gal- 
vanism, 225, 306 
New Bock, 65, 130, 224, 297, 379, 449 
Nimmo’s evidence on boilers, 329 
Northumberiand. Geology of, 122, 358 
Nut-galls contain a volatite oil, 401 
Ou of Nut-galls. On 401 
Patents, 76, 154, 235, 317, 394, 466 
Philip on vital functions, 224, 297 
Phillips's New Theory. On, 35, 101, 204, 
219 
475 
Platinum. New compound of, 230 
Poisons. On,* t 144 
Potash, to prepare from potatoe tops, 
338 
Potatoes. Alcohol to extract from, 337; 
Potash from tops of, 838 
Prize Question, 155 
Quadratic Theorem. A new; 378 
Rarefa:tion. Effects of, on flame and 
explosion 4 
Reade’s quadratic theorem, 378 
Ruchter’s evidence on explosion in Well- 
close-square, 249 
Reyal Society, 449, 456 
Royal Society of Edinburgh, 457 
Russel on Phillips’s hypotheses of mo- 
tion, 204 
Safety furnace. Bakewell’s,211; Mur- 
Tay’s, 217 
Safety-lamps. Davy on, 3, 232; Mur- 
ray on, 74, 145, 313; rewards be- 
stowed for, 307, 386; testimony as to 
original inventor, 387; controversy 
concerning, 458 
Saturn. Onring of, 409 
Siliiman’s exper. with oxi-hydrogen 
blow pipe, 106 
Srght. Case of, restored, 316 
Solids, On resistance of, 413 
Spence’s Manuscripts, 307 
Springs, ebbing and flowing. Cause of, 
81, 267 
Steam-engines. Report of Committee 
of House of Commons on, 50, 83, 
167, 243, 327; work by, in Cosn- 
wall, 74, 150, 231, 312, 388, 459 
Stees evidence on boilers, 251 
Steele’s Nooth’s apparatus. On, 73 
Swallows. Hibernation of, 317 
Tatum on vegetation, 42, 213, 353 
Taylor’s (J.) evidence on steam-engines, 
Taylor's (P.) evidence on steam-engines, 
. 169 
Temperature, animal. On, 295 
Tilloch’s evidence on steam- engines, 186 
Timber, Expansion and contraction of, 
; 437 
Tinder-lox. A new, 280 
Tredgeld on Phillips's hypothesis of 
motion, 35, 208; on stratification, 
1243 on resistance of solids, 413 
Trees, Fruit, to force to bear, 411 
Tiigonometrical survey. On the, 40, 
282 
Turnsole. Exper on, 450 
Upington on music and oratory, 321 
Ure’s process to obtain iodine, 161; 
on chlorine, 231 
Vebrtati n, 42, 121, 144, 206, 213, 341, 
353, 459 
Vesuvius. 
