i. FRESNEL on the Undulatory Theory of Light 113

ii. Rule for the Correction of a Lunar Observation. By Mr. W. WISEMAN, of Hull 135

‘_De l’Influence des Agens Physiques sur la Vie_. Par W. F. EDWARDS, D.M.’ &c., reviewed 137

Account of Professor CARLINI’s Pendulum Experiments on Mont Cenis 153

Analysis of ‘_Transactions of the Horticultural Society_. Vol. vii. Part I.’ 159

_On the Recent Elucidations of Early Egyptian History_ 176

_Proceedings of the Horticultural Society_. 190

MISCELLANEOUS INTELLIGENCE.

I. MECHANICAL SCIENCE.

1 On the Combined Action of a Current of Air, and the Pressure of the Atmosphere 193

2 Considerations relative to Capillary Action 194

3 Novel Use of the Plough 197

4 Discovery of Rocks under the Surface of the Sea 198

5 Paper to resist Humidity _ib._

6 Professor Amici’s Microscopes _ib._

II. CHEMICAL SCIENCE.

1 On the Specific Heat of Gases 200

2 On the Incandescence & Light of Lime 201

3 Evolution of Heat during the Compression of Water _ib._

4 On Electrical Excitation _ib._

5 Magnetic Repulsion 202

6 Diminished Solubility of Substances by Heat _ib._

7 Composition of Cyanic Acid 203

8 Iodous Acid 204

9 Manganesic Acid _ib._

10 Heavy Muriatic Ether, and Chloric Ether _ib._

11 Test for the Presence of Nitric Acid 205

12 Peculiar Formation of Nitre _ib._

13 Experiments on Fluoric Acid and Fluates _ib._

14 Crystallization of Phosphorus 206

15 Solution of Phosphorus in Oils _ib._

16 On the Inflammation of Powder, when struck by Brass 207

17 Cementation of Iron by Cast Iron _ib._

18 On the Preparation of Ferro-prussiate of Potash _ib._

19 Sulphocyanide of Potassium in Saliva 208

20 Decomposition of Sulphate of Copper, by Tartaric Acid _ib._

21 Separation of Arsenic from Nickel, or Cobalt 209

22 Chemical Researches into Certain Ancient Substances 209

23 Compounds of Gold 210

24 On the Bitter Substance produced by the Actions of Nitric Acid on Indigo, Silk, and Aloes _ib._

25 On the Existence of Crystals of Oxalate of Lime in Plants 214

26 Fallacy of Infusion of Litmus as a Test _ib._

27 Tests for the Natural Colouring Matter of Wine 215

28 Test of the Presence of Opium _ib._

29 Denarcotized Laudanum _ib._

30 Extraction of Morphia from Dry Poppy Heads 216

31 Preparation of Morphia _ib._

32 Easy Method of Obtaining Meconic Acid 217

33 On a New Vegetable Acid _ib._

34 Altheine, a New Vegetable Principle _ib._

35 Rheine, a New Substance from Rhubarb 218

36 On Dragon’s Blood, and a New Substance which it contains _ib._

37 Purification of Madder 219

38 On Indigo, and Indigogene 220

39 On the Mutual Action of Ethers, and other Substances 221

40 Faraday’s _Chemical Manipulation_ _ib._

III. NATURAL HISTORY.

1 On the Supposed Influence of the Moon 222

2 Luminous Appearances in the Atmosphere _ib._

3 On the Determination of the Mean Temperature of the Air 223

4 Indelible Writing _ib._

5 Peculiar Crystals of Quartz _ib._

6 Native Iron not Meteoric 224

7 Native Argentiferous Gold 225

8 Prothéeïte, a New Mineral 226

9 Volcanic Bisulphuret of Copper _ib._

10 Fall of the Lake Souwando, in Russia 227

11 Vegetable Torpor in the Root of the Black Mulberry Tree 228

12 Method of increasing the Odour of Roses _ib._

13 Pine Apples _ib._

14 Mode of Condensing Vegetable Substances for Ship’s Provisions 229

15 Rewards for the Discovery of Quinia, and for Lithotrity _ib._

16 Upon the Gaseous Exhalations of the Skin 230

17 Effects of Galvanism in Cases of Asphyxia by submersion _ib._

18 Recovery from Drowning 231

19 Preservation of Cantharides _ib._

20 Chloride of Lime in cases of Burns _ib._

21 Cure of Nasal Polypi 232

22 Bite of the Viper _ib._

23 Experiments on the Poison of the Viper _ib._

24 Destruction of Moles _ib._

25 On growing Salad Herbs at Sea 233

26 Chinese Method of Fattening Fish 234

Meteorological Diary for the Months of June, July, and August, 1827 236

CONTENTS. _Oct.–Dec._ 1827.

On the Means generally used with the Intention of curing a Stoop. By the late Mr. SHAW 237

A Critique on the Aplanatic Object-glasses, for diverging Rays, of Vincent Chevalier, ainé et fils. By C. R. GORING, M.D. 248

On the Existence of Chlorine in the Native Black Oxide of Manganese. By JOHN M’MULLEN, Esq. 258

Modern Improvements of Horticulture 261

FARADAY’s _Chemical Manipulation_, reviewed 275

Statistical Notices suggested by the actual State of the British Empire, as exhibited in the last Population Census. Communicated by Mr. MERRITT 283

On the Modern Ornaments of Architecture, &c. 292

_De l’Influence des Agens Physiques sur la Vie_. Par W. F. EDWARDS, D.M. &c., reviewed 296

Experiments on Thought 308

Hieroglyphical Fragments, illustrative of Inscriptions preserved in the British Museum, with some remarks on Mr. Champollion’s opinions. In a letter to the Cav. San Quintino 310

On the Naturalization of Fish. By J. MAC CULLOCH, M.D., F.R.S., &c. 320

WADD’s _Nugæ Chirurgicæ or, a Biographical Miscellany_, reviewed 329

_Nugæ Canore, by_ UNUS QUORUM, reviewed _ib._

WADD’s _Mems., Maxims, and Memoirs_, reviewed _ib._

On Tic Douloureux 346

Remarks on some Quadrupeds supposed by Naturalists to be extinct. By JOHN RANKING, Esq. 350

Description of a cheap and portable Instrument for enabling Young People to acquire a knowledge of the Stars, or determine their situation in the Heavens. By S. LEE, Esq. 371

CARUS’s _Introduction to the Comparative Anatomy of Animals_, reviewed 377

_Comparative Value of the principal Varieties of Fuel, &c., by_ MARCUS BULL, reviewed _ib._

DANIELL’s _Meteorological Essays and Observations_, reviewed _ib._

_Philosophical Transactions of the Royal Society for 1827_, reviewed _ib._

_Practical Treatise on the use of the Blowpipe, by_ J. GRIFFIN, reviewed _ib._

_Circle of the Seasons, and Practical Key to the Calendar and Almanack_, reviewed _ib._

_Conversations on the Animal Economy_—reviewed _ib._

Notice of a New Genus of Plants discovered in the Rocky Mountains of North America by Mr. DAVID DOUGLAS. By JOHN LINDLEY, Esq. 383

A Description of the Aurora Borealis seen in London on the Evening and Night of the 25th of September, 1827, with Critical Remarks, &c. By E. A. KENDALL, Esq., F.S.A. 385

Proceedings of the Royal Society 424

Proceedings of the Horticultural Society 425

ASTRONOMICAL AND NAUTICAL COLLECTIONS