478 
Line, straight, definition of, 71. 
Longmire, Mr, an abstracted statement of 
the weather during the 20 years, from 
1772 to 1792, kept at the Imperial 
Academy in St. Petersburgh, 13—on 
lunar and solar phenomena at Toula, 
in Russia, 222. 
M. 
Mac Culloch, Dr. on the Greek fire of the 
Middle Ages, 390. 
Magnesia, action of, on salep, 469, 
carbonate of, native, analyses of, 
389. 
Magnesite, analysis of, 389. 
Magnetic power of different kinds of iron, 
381. 
Magnetism, mathematical laws of, notice 
respecting, 470. 
Malic acid, effects of, upon Brazil wood 
paper, 26. 
Mantell, Mr. notice of his paper on the 
strata of Tilgate Forest, in Sussex, 69. 
Marcet, Dr. death of, announced, 397. 
Melanic acid, name proposed to distin- 
guish a peculiar substance found in black 
urine, 69. 
Meteorite, fall of, at Angers, account of, 
313. 
Meteorological account of the weather dur- 
ing the three winter months of the years 
1821, 1822, 6. 
— tables, 79, 159, 239, 319, 
399, 473. 
Mica, with only one axis of double refrac- 
tion, analysis of, 257. 
Mines, on the temperature of, 440, 
Mineralogy, progress of, in America, 76. 
Minerals, magnesian, of Hoboken, 75. 
amphibolic, analysis of, 316. 
Moisture, power of, in modifying the spe- 
cific gravity of gases, 29. 
on the attraction of, by peroxide 
of copper, 154. 
Molybdenum, sulphuret, analysis of, 76. 
Moyle, Mr. on an electrical phenomenon, 
439—on the depression of the barome- 
ter, 448, 
Multinomial, expansion of, method for 
finding the sum of all the coefficients in, 
2 
Muriatic acid, effects of, upon Brazil wood 
paper, 24. 
N. 
Naptha, supposed to be an ingredient of 
-Greek fire, 391. 
New lead ore, on a, 117. 
Niello, on works in, and the pirotechnia of 
Venoceio Biringuccio, Siennese, 364. 
Index. 
Nitric acid, effects of, upon Brazil wood 
paper, 24, : 
Oo. 
Observations, astronomical, 27, 171, 277, 
357, 450. 
————— upon D.’s answer to C.’s 
ee upon Mr. Herapath’s theory, 
Oersted, Prof. instrument for measuring 
the compression of water, 236. 
Oils, fixed, effect of, in destroying the 
smell of essential oils, 388. 
Ore, lead, on anew one, 117. : 
Ores, copper, average produce of the ores 
of, 154, 
Oxalic acid, effects of, upon Brazil wood 
paper, 26, 3 : 
P. 
Partington, Mr. C. F. analysis of his 
work on the steam-engine, 57. 
grey new, 78, 158, 238, 318, 397, 
12. 
Petersburgh, St. academy of, abstracted 
statement of the weather during the 20 
years, from 1772 to 1792, 13. 
Petrifactions, siliceous, imbedded in calca- 
reous rocks, on, 236. 
Phenomena, lunar and solar, at Toula, in 
Russia, 222, 
Phenomenon, remarkable one which oc- 
curred at Juyenas, T2. 
Phillips, Mr. R. on certain substances 
which have been supposed to act as 
acids and as alkalies, 53—observations 
on the pulyis antimonialis of the Pharm. 
Lond. 265—on a peculiar sulphate of 
alumina, 280—on the composition of 
common verdigris, 161—on some pecu- 
liar crystals of sulphate of potash, 344, 
— Mr. W. on the crystalline form 
of diaspore, 17—-on the crystalline form 
of sulphate of potash, 342. 
—— and Mr. Woods, sketch of 
the geology of Snowdon and surround- 
ing country, 231, 401. 
Phosphatic acid, effects of, upon Brazil 
wood paper, 25. 
Phosphoric acid, effects of, upon Brazil 
wood paper, 25, 
Phosphorous acid, effects of, upon Brazil 
wood paper, 25. 
Pirotechnia of Venoceio Biringuccio Si- 
ennese, 364. 
Plants, observations on the time of the 
flowering of, 6. 
Plumbago, conversion of cannon balls 
into, 77. 
Potash, sulphate of, on some’ peculiar 
crystals of, 344, 
