Arches, Brunel's mode of constructing,

124. Tew irons,

John Shugert,

404
125. Mill stones, cooling,

Austin Taylor,

ib.
126. Spark catcher,

Wm. Shultz,

ib.
127. Horse power,

Richard Skinner,

405
128. Cooking stove,

B. H. Pearson,

ib.
129. Hydrant,

David Horne,

ib,
130. Rail plates,

A. M. McCain,

ib.
131. Rail roads,

Nathan Reed,

ib-
132. Cancer ointment,

Elias Gilman,

ib.
133. Gripe chuck,

David Peeler,

406
A.
Acid, carbonic, properties of liquid,

200
solidification of,

202
Acid, muriatic, cold produced by sulphate of soda and,

204
Æther, formation of, by Mitscherlich,

257
Ale, &c. to prevent the souring of, Josiah Stowell's patent,

196
Aliments, preservation of,

358
Altitude and azemuth circle, Kater's portable,

62
,

135

68
Architecture of the middle ages,

135, 208
Arsenic, separation of, from substances,

338
Artificial crystals and minerals,

336
Association for the advancement of science, British,

133, 334, 414
Atmospheric electricity, experiments on,

166
B.
Bache, Prof. A. D., on diagrams for registering the winds,

22
Battery, galvanic, Prof. Daniel's,

123
Bell Rock Light House,

70
Beams, cast-iron, the strength of, by Prof. Cram,

153
Beet-root sugar, manufacture of,

134
in Russia,

408
Blast of stone at Craigleith quarry,

356
Boilers, steam, preventing explosions in, by A. C. Jones,

90
for generating steam, John Ames' patent,

329
Boilers, steam, explosions of, remarks on Perkins' suggestions on,

92
report of Com. of Frank. Inst. on, 217, 288, 361
Bibliographical Notices.
Concise decimal tables for practical men, by Timothy Claxton,

108
Lardner on the steam engine, with notes, by Prof. Renwick,

109
Bituminous coal in Cuba, note on, by R. C. Taylor,

178
British association for the advancement of science,

133, 334
Institution of civil engineers,
Brown, Lieut. T. S., experiments on resistance of sand,
Brunel's mode of constructing arches,

142

Charcoal, manufacture of,

410
Chemistry, microscopic, observations on, by J. W. Draper,

378
Cities, health of-proposed improvement in London,

348, 423
Circle, Kater's portable altitude and azemuth,

62
Coal, bituminous, in Cuba, note on, by R. C. Taylor,

178
Coffee, improved,

358
Coining press, description of, by Franklin Peale,

307
Coins and medals,

355
Cold produced by sulphate of soda and muriatic acid,

204
Collision and impact, on, by Eaton Hodgkinson,

51
Compass, mariners', invention of,

68
Comet, Halley's,

282
Compounds, organic, new force in forming, by M. Berzelius,

331
Copper, experiments on the durability of, by D. Mushet, Esq.

53
Copyist, prompt,

414
Cordage, or rope, manufacture of, Fanning's patent,

195
Cornish mines, access to the

147
steam engines, duty of

202
Cotton, &c. apparatus for drying, &c.. Philbrick's patent,

197
Craigleith quarry, great blast of stone at,

356
Cram, Prof. T.J., on strength of cast-iron beams,

153
Crayons for drawing on glass, Howlett's,

266
Crystals and minerals, artificial,

336
Crystalization, light evolved during,

345
Daglish's prize rails and pedestals,

274
Davy's safety lamp,

48
Dead, Elton, and Caspian seas, water of the

202
Decomposition of electrical light, by Prof. Wheatstone,

61
sulphates by oxalic acid,

346
Diagrams for registering the course of the wind, by Prof. A. D. Bache,

22
Dipping needle deflector, Fox's,

200
Draper, Prof. J. W., experiments on endosmosis,

27
on microscopic chemistry,

378
Drilling holes in glass,

70
Drying, &c. cotton, &c. Philbrick's patent,

197
E.
Earle, T. on location and grading of rail-roads,

20
Earthquakes in the Ionian islands,

142
Eclipse, solar, computing longitude by, by S. C. Walker,

97
Eclipse, solar, of May 15th, 1836, observations of,
Editor's remarks on patents from Nov. to March, 1836, 35, 112, 182, 248, 312, 387
Electricity, experimental researches in, by Prof. Faraday,

55
atmospherie, experiments on,

166
Electrical light, decomposition of, by Prof. Wheatstone,

61
relations of metals, &c.

200
apparatus for dancing figures,

338
Elton, Dead, and Caspian seas, water of the

202
Endosmosis, experiments on, by Prof. John W. Draper,

27
Engineers, civil, British institution of,

142
Escapement, Witherspoon's detached pendulum,

204
Espy, J. P. essays on meteorology,

100, 239
Ether, formation of, by Mitscherlich,

257
Expansibility of stone, by, A. J. Adie,

213
Explosions in steam boilers, on, by A. C. Jones,

90
remarks on Perkins' suggestions on,

92
report of Com. of Frank. Inst. on, 217, 289, 361
Extracts, preparing,

410
F.
Faraday, M., experimental researches in electricity,

55
Flints, soap from,

214
Floating bodies, laws of the motion of,

260
Forests, effect of, upon temperature,

63

100

97
200
70
17

31, 109, 387

385

ib.
217, 289, 361

32
33

34
109, 312

111

ib.
179
180
181
246
311

Formula for differences of longitude, by S. C. Walker,
Fox's dipping needle deflector,
Freyburgh suspension bridge,
Frost, James, on calcareous cements,
FRANKLIN INSTITUTE.

Monthly conversation meeting,
Quarterly meeting,

· report of,
Report of committee on explosions of steam boilers,
Committee on Science and the Arts.
Report on Mr. Gregg's steam boiler,

Wm. Shultz's spark arrester,
Fossard's manufacture of Prussiates,
Amasa Holcomb's reflecting telescopes,
C. Wesener's manufacture of artificial soda,
Potts' pumps for steam engines,
Garrett and & Eastwick's locomotive engines,
Prutzman's lever lock and key,
Raub's steam gauge,
of committee to try experiments with spark arresters,
C. Kenzie's water wheel

G.
Galena of Bleyburg, treatment of in Carinthia,
Galvanic battery, Prof. Daniel's,
Galvanism, change in minerals by,
Gas lighting,
Gas, earthen retorts for generating,
Gay, E. F. on motive power on rail-ways,
German silver, analysis of,
Gilded ware, note on the essay of,
Giass, drilling holes in,
Glass, plate,

Howlett's crayons for drawing on,
Golden sulphur of antimony, &c.

H,
Halley's comet,
Hardware, British,
Health of cities, proposed improvement of London,
Hearing, assisting the.
Heat, researches on, by M. Melloni,

polarization of, by Prof. Forbes,

conveyed by springs,
Horse collars, and saddles, Ebenezer Hall's patent,
Hot blast, manufacture of cast-iron by the, by Prof. T. Clark,

I.
Ice, formation of, at the bottom of streams, by M. Arago,

trade,
Icelandic moss deprived of bitterness,
Impact and collision, on, by Eaton Hodgkinson,
Ink, to prevent it becoming mouldy,
Ionian islands, cause of earthquakes in the,
Iron, cast, on the manufacture of, by Prof. T. Clark,

steam vessel, report of experiments on board of,

stereotype plates,
Iron steamboat,

J.
Jones, A. C. on regulations for the safety of steam boilers,
management of turn-outs on rail roads,

K.
Keith medal to Prof. Forbes,
Kerm's mineral, &c. preparing

L.
Lamp, Davy's safety,

232
123
336
284
407

63
135
346

70
142
266
409

282

428
348, 423

407
58
60
62
122
127

125
142
357

51
357
142
127
258
357
70

90
310

61
489

48

158
411

Law, new patent,
Leeches, preserving,
Lens of rock salt,

414
Level of land and sea,

417
Lever lock and key, report on Prutzman's,

180
Liverpool and Manchester rail-way,

429
Light lace veils,

ib.
Light, electrical, decomposition of, by Prof. Wheatstone,

61
absorption of, by nitrous acid gas,

199
evolved during crystallization,

345
Lighting and ventilation,

263
Jime water used in the dressing of wool,

134
hydraulic,

259
Longitude, formula for differences of, computed from solar eclipse, by S. C. Walker, 97

M.
Machinery, results of,

357
Magnetic experiments in an iron vessels,

258
relations of metals, by Prof. Faraday,

125
dip of needle,

126
Magnets, steel for,

126
Malt liquors, to prevent the souring of, Josiah Stowell's patent,

196
Manganese, black oxide of, commercial value of,

343
Marine steam engines,

52
Mariners' compass, invention of,

68
Maryland, new map of, report on,

172
Mathematical researches,

419
Medals and coins,

355
Metals, &c. electrical relations of,

200
Meteorological observations,

.72, 144, 216, 288, 360, 432
Meteorology, essays on, by Jas. P. Espy,

100, 239
Mordecai, Capt. A. on manufacture of military projectiles

8, 82, 145
Microscopic chemistry, observations on, by J. W. Draper,

378
Milling coin, description of a machine for, by F. Peale, Esq.

375
Military projectiles, from the French of F. J. Culmann, by Capt. A. Morde-
cai,

8, 82, 145
Mines, access to the Cornish,

142
Minerals and crystals, artificial,

336
Minerals, change in, by galvanism,

336
Miniature steam engine,

357
Moss, Icelandic, deprived of bitterness,

ib.
Motion of floating bodies, laws of the

260
Motive power on rail-ways, report on, by E. F. Gay,

63
Muscles in man, temperature of,

127
Needle, magnetic dip of,

126
Needle, dipping, deflector, Fox's,

200
Nitrous acid gas, absortion of light by,

199
o.
Oil, salad, production and manufacture of,

19
Organic compounds, new force in forming, by M. Berzelius,

331
Oven, perpetual,

414
Oxalic acid, decomposition of sulphates by,

346
Oxide of manganese, commercial value of,

343
P.
Patent law, new,
Patents, American, list of, with remarks,

35, 112, 182, 248, 312, 387
list of American,

71, 143, 214, 287, 358, 430
Paving with wood,

70
Peale, F. description of coining press U. S. Mint,

307
machine for milling coin,

375
Pendulum escapement, Witherspoon's detached,

204
Perkins' suggestions on steam explosions, remarks on,

158

92