1 Heat evolved from Air by Com- 2 On the Action of a Moving Me- tallic Disc, upon a portion of a Lime 9 Table of the Density of Vapours 10 On the Existence and Nature of 228 ib. 229 ib. 230 ib. 232 ib. ib. 233 240 2 Italian Cavern containing Bones 241 ib. 4 Dense Fogs ib. 242 ib. 234 6 Peculiar Construction of Shot- 7 Elastic Mould for Castings.... 225 8 Leslie's Apparatus for ascertaining the Specific Gravity of Powders 226 ib. 243 ..... ..... ib. 16 Pure Proto-Salt of Iron ...... 17 Action of Potassium on Oxalates ib. 18 Analysis of the Triple Prussiate of 19 Preparation of Medicinal Chlo- 20 Mode of Action of Disinfecting 21 Deleterious Effects of Carbonic 22 New Acids obtained from Animal 24 Method of Destroying the Empy- reumatic Odour of Alcohol .. ib. .... . On the supply of Water to the Western Parts of the Metropolis Revised Arrangement of the Ornithological System of Cuvier and Dumeril, with reference only to the Genera and Species of the On the Effect of certain Exercises on the Form, and their [Influence Description of the Kaleidophone, or Phonic Kaleidoscope; a new philosophical Toy, for the illustration of several Interesting London in 1826, with respect to its present state of Architectural "De Plantarum, præsertim Cryptogamicarum, Transitu et Analo- On the Chemical Composition of two Liquids lately proposed as Letter from Captain Sabine to Professor Renwick, on the Weights Proceedings of the Royal Society "Atlas Ethnographique du Globe, ou Classification des Peuples Anciens et Modernes, d'après leur Langues, par Adrien Balbi,” 294 317 344 On Achromatic Microscopes, with a description of certain Objects for trying their defining and penetrating Power. By Dr. Göring. 410 ASTRONOMICAL AND NAUTICAL COLLECTIONS; i. Corrected method of computing an observed Occultation ii. Remarks on the Solar Tables. By Thomas Henderson, Esq. 438 iii. Answer to some Remarks of Mr. Ivory 362 1 Determination of the Electro- conducting power of Metals... 470 3 On the Transference of Ponder- 5 Transference of Heat by change 19 Preparation of Cyanide of Iodinę 480 11 On the Detection of Hydrocy- anic Acid in the Bodies of Ani- 12 On the presence of Ammonia in the natural Oxide of Iron.... 481 13 Volcanic Muriate of Ammonia 14 On the Efflorescent Salts of Vol- ..... III. NATURAL HISTORY.. ib. 5 Production and Preparation of ib. 7 Preparations of Henbane and ib. 8 On the Culture of Bees in Fo- 9 Signs of Increase, Maturity, and ...... 16 Peroxide of Potash from Nitre 483 17 Crystallized Carbonate of Po- 19 Composition of White Copper, 20 Method of Bronzing Tin...... ib. 21 Chromate of Silver crystallized 484 23 Adulteration of Sulphate of 24 Composition of Vegetable prox- 26 Substances contained in Essen- .... ....... 485 ib. 486 487 488 ib. TO OUR READERS AND CORRESPONDENTS. THE pages of this Journal are impartially open to all communications upon the subjects of Science, Scientific Literature, and the Arts; and it is requested that they may be forwarded to the Editor, at least one month previous to the period of the publication of each Number. We shall be happy to receive papers from Provincial Scientific and Literary Societies, and to publish them either on the part of the Society, or of their respective authors. · Papers which are too long for insertion, as is the case with many which we receive, or which are deemed unfit for this publication, will be immediately returned to the source whence we receive them, with our reasons for their return. We are indebted to Mr. Merrett, of Liverpool, for the article on "the Architecture of London," and hope again to hear from him. The communication upon the subject of Gymnastic Exercises we have been obliged to abridge more than we could have wished. It is chiefly extracted from the works of Mr. Shaw, surgeon to the Middlesex Hospital. The short notice from E. S., upon the subject of Captain Head's "Rough Notes," was unfortunately mislaid, and not found again till too late for publication. We cannot exactly see the advantage of the plan proposed by our correspondent at Droitwich; and, therefore, decline publishing his letter till we are more satisfactorily informed upon the subject. Mr. Mac Mullen's additional observations upon the existence of chlorine in black oxide of manganese, arrived too late for insertion in the present Number. Reviews of the Philosophical Transactions, of Dr. Turner's Elements of Chemistry, of Mr. Faraday's Essay on Chemical Manipulation, and of several other scientific works, have been postponed for want of room. We shall certainly notice them in our ensuing Number. . The letter of F. R. S., and the paper signed “Inquisitor," are in reserve, as we conclude some material change must soon take place. An account of the several Courses of Lectures delivered during the season in the Royal Institution, and of the proceedings of the general and other meetings of the members, was intended for this Number, but the pressure of other matter, and the length of our report of the weekly evening meetings, has obliged us to delay its insertion. We are requested by Mr. Faraday to publish the following errors which occur in his work, entitled Chemical Manipulation, with their corrections. They are errors of the press, which are not self-evident, and might lead pupils into mistakes. " Page 83, line 22, for 39.37039, read 39.37079 23 39 3.93704 39.12929 26 3.93708 39.18929 low 9 high " 99 140 |