Index. 
Patents, list of, 243, 326, 404, 480, 
Pavement of London, on, 469. 
Peyrouse, M.la, on four plants, 393. 
Philip, Dr. Wilson, on the action of 
the heart, 69—on the nervous in- 
fluence on secretion, 226—on the 
identity of galvanic and nervous in- 
fluence, 323. 
Philips, W. sq. on the primitive 
crystal of quartz and sulphate of 
barytes, 136. 
Philosophical Transactions for 1815, 
analysis of, 130. 
Phosphoric acid, composition of, 305. 
Phosphuret of potash, 280. 
Photometer, new, 3. 
Physical analysis of soils, 207. 
Physiology, improvements in, during 
1815, 68. 
Piazzi’s positions of the stars, 149. 
Pig, extraordinary preservation of, 396, 
Pitcaithly, mineral water of, analyzed, 
44, 
Plane-tree, curious growth of, 316. 
Plano-cylindrical glasses, on, 324, 474. 
Plants, distribution of, 375—number of 
species known, 400, 
Platinum, 32—fulminating, 468. 
Platinus occidentalis, juice of, ana- 
lyzed, 52. 
Plymouth, weather at, 267. 
Pollenin, 49. 
Pond, Mr. north polar distances of 
stars determined, by, 2. 
Pressure, effect of, on jelly, in depo- 
larizing light, 7. 
Prevost, Professor P. note, by, on dew; 
7i—letter, by, to Dr. Wells, on dew, 
109, 
; M. Benedict, on dew, 127. 
Prevost’s theory of radiant heat, objec- 
tions to, 223—answered, 302, 
Primitive rocks, new arrangement of, 
A718. 
Prout, Dr. analyses, by, 51, 55, 57. 
Prussic acid, 35—experiments on, 229, 
350—combination of, with eil of 
peaches, 325—how obtained pure, 
353—constituents of, 355. 
Pyrodmalite, analysis of, 62. 
Q. 
Quartz, primitive crystal of, 136. 
R, 
Rain-gauge, new, description of, 387. 
Ravensheugh, mineralogical description 
of, 388. 
Raumer, new arrangement of primitive 
rocks, by, 478. 
Razoumoffskin, analysis of, 62, 
Rennell, James, Evq. on a current tothe 
westward of the Scilly isles, 130. 
Re-union of parts of the living body, 
263, 
Richard, M. on two new American 
plan ts, 130. 
487 
Robison, Dr. John, biographical ac- 
count of, 169, 249, 
Rose-Bank, weather at, 364, 
Royal Society, nature of, 159—meet- 
ings of, 133. 
Rudolphi, Professor, bile analyzed, 
by, 50, 
Ruhland, Mr. on the effect of acids on 
the magnetism of iron filings, 16—ex- 
periments, by, on adhesion, 20. 
Rumford prize voted to Dr, Wells, 243, 
Rust in wheat, on, 394. 
Ss. 
Saint Helena, flora of, 242. 
Salisbury, Mr. om a natural family of 
plants, 307. ' 
Salt-mines of Cardina, en, 138. 
Saponaceous matter, how obtained, 47, 
Saracenia flava, fly-catching qualities 
of, 135. 
Savigny, M, on ascidiw, 464, 
Saussure on the absorption of gases, 22 
—analysis of vegetable bodies, by, 
46—on starch sugar, 47, 
Sayer, Augustus, M.D. on the cure of 
a case of complete aphonia, 459, 
Scating, accidents from, 84, 
Scapula, unknown, 137, 
Schiivbler, Dr. on the electricity of the 
atmosphere, 9—on the physical qua- 
lities of soils, 207. 
Scott, Mr. on the horns of the elk, 389, 
Sea-water, analysis of, 42, 
Seeds, siructure of, 307. 
Sementini, Chevalier, on the phosphuret 
of potash, 280, 
Serpentine, Egyptian, analysis of, 62. 
Silver, on the method of obtaining 
pure, 473. 
mag thermometer, notice respecting, 
86. 
Solly, Esq. on the junction of shell 
lime and trap, 136, 
Sorbicacid, properties of, 37. 
Sounds, distance at which they may be 
heard, 3. 
Specific gravity of gases, table of, 343, 
Spectacle glasses, new, 324. 
Starch, conversion of, into sugar, 46, 
Steam, query respecting, 469, 
Stevenson, Mr, on a gradual change in 
ay level of the German Ocean, 390, 
2, 
Stiekleback infested with a worm, 106, 
Strontian, weight of an atom of, 399, 
Sugar, action of, on metallic salts, 42— 
from beet, manufacture of, 233, 
Sulphate of barytes, primitive crystal 
of, 186, 
Sulpbate of manganese, how obtained 
pure, 398, 
Sulphureted chyazic acid, 36. 
Sulphuric acid, fuming, $4, 
Sun-dial, ancient, account of, JAI, 
