478 
Marcel de Serres, M. on the uses of the 
dorsal vessel in insects, 34, 
Meerschaum, absorption of gases~by, 
248, 
Meteor, account of, 465. 
Meteorological table, 79, 159, 239, 318, 
399, 473. 
Mines of Cornwall and Devon, eco- 
nomy of, 58, 
Montague, George, Esq, death of, 77. 
Mother-of-pearl, optical phenomena of, 
135. 
Mountains, formation of, explained, 
All. 
Mouths of fishes, 228. 
Moyle, Mr. on valves, 305. 
Murray, Dr. John, analysis, by, of 
the mineral waters of Dunblane and 
Pitcaithly, 256, 347—his method of 
preventing explosions in coal-mines, 
All. 
~ 
N. 
Nautical Almanac for 1815, defects of, 
394, 
Nerves, influence of, on the action of 
the arteries, 139, 
New curve, 154. 
Nickel-antimonerz, 154. 
Nomenclature, chemical, on, 232. 
oO. 
Office, proposal to establish one in 
Newcastle to register every thing 
respecting the collieries, 388. 
Organic impressions on flint explained, 
38. 
——— substances, on the analysis of, 
269. 
Osmium, memoir on, 433. 
Orthoceratite in marble, 152; 
Quzel, water, or dipper, new species 
of, 142. 
Oxide of tin, crystals of, described, 
59. 
Oxygen gas, specific gravity of, 321. 
Oxymuriatic acid, bleaching by, on the 
history of, 422. 
P. 
Parmentier, M. biographical account 
of, 161. 
Parry, Dr. on the cause of the pulsa- 
tion of the arteries, 66. 
Patents, list of, 158, 237, 316, 397. 
Petit-Thouars, M. du, observations, 
by, on plants, 149, 
Index. 
Philip, Dr. A. P. Wilson, experi- 
ments, by, to determine on what the 
action of the heart depends, 221. 
Philips, Mr. William, description of 
the crystals of oxide of tin, by, 59. 
Philosophical Transactions for 1814, 
part ii. 134—for 1815, part i. 219. 
gree ee mineral water of, analyzed, 
256. 
Plymouth, weather in, for six months 
366. : 
Polar ice, account of, 142. 
Polarization of light by refléction from 
transparent bodies, 222. ’ 
Potassium, easier mode of obtaining, 
(SEE 
Pressure, effects of, in producing that 
% 
species of crystallization which 
forms two oppositely polarized 
images, 221. rx 
Prevost, M. on the equilibrium of. 
radiant heat, 379. 
Prichard, Dr. J. C. on the older floetz 
strata of England, 20 — geological 
observations on North Wales, by, 
363. 
Prout, Dr. on the analysis of organic 
substances, 269, 
Prussic acid, nature of, 468, 
Q. 
Quartz rock, on, 63. 
R. 
Radiant heat, on the equilibrium of, 
379, 
Radiatrix, 154. 
Red head, mineralogy of, 142. 
Red sand-stone formation, described, 
13. 
Refraction, atmospherical, 
tions on, 135. 
Relation between the specifie gravity 
of bodies in their gaseous state and 
the weight of their atoms, 32. 
Rents, essay on, 43, 213, All. 
Roget, Dr. on a new instrument for 
performing mechanically the involu- 
tion and evolution of numbers, 220. 
Rome, ancient, number of inhabitants 
in, 75. 
Rona, island of, structure of, 60. 
Royal Geological Society of Cornwall, 
466. 
——- Medical Society of Edinburgh, 
prize by, for 1816, 70. 
—- Society, meetings of, 66, 453, 
Rum, island of, structure of, 60. 
observa- 
