xviii
| Observations on the Changes the Ovum of the Frog undergoes during the formation of the Tadpole. By Sir Everard Home, Bart. V.P.R.S. | page 227 | |
| A general Method of calculating the Angles made by any Planes of Crystals, and the Laws according to which they are formed. By the Rev. W. Whewell, F.R.S. | 227 | |
| Explanation of an Optical Deception in the Appearance of the Spokes of a Wheel seen through vertical Apertures. By P. M. Roget, M.D. F.R.S. | 230 | |
| On a new Photometer, with its application to determine the relative Intensities of Artificial Light, &c. By William Ritchie, A.M. | 231 | |
| The Description of a Floating Collimator. By Captain Henry Kater, F.R.S. | 232 | |
| Notice on the Iguanodon, a newly discovered Fossil Reptile, from the Sandstone of Tilgate Forest, in Sussex. By Gideon Mantell, F.L.S. and M.G.S. | 234 | |
| An experimental enquiry into the Nature of the radiant heating effects from terrestrial sources. By Baden Powell, M.A. F.R.S. | 235 | |
| On the Anatomy of the Mole-cricket. By J. Kidd, M.D. and F.R.S. | 236 | |
| Further Observations on Planariae. By J. R. Johnson, M.D. F.R.S. | 238 | |
| On the Influence of Nerves and Ganglions in producing Animal Heat. By Sir Everard Home, Bart. V.P.R.S. | 238 | |
| An Essay on Egyptian Mummies; with Observations on the Art of . Embalming among the ancient Egyptians. By A. B. Granville, M.D. F.R.S. F.L.S. F.G.S. M.R.I. | 240 | |
| On the temporary Mas^netic Effect induced in Iron Bodies by Rotation. By Peter Barlow, F.R.S. | 241 | |
| Further Researches on the Preservation of Metals by Electro-chemical Means. By Sir Humphry Davy, Bart. P.R.S. | 242 | |
| On the Magnetism of Iron arising from its Rotation. By Samuel Hunter Christie, Esq. M.A. | 243 | |
| Some Account of the Transit Instrument made by Mr. Dollond, and lately put up at the Cambridge Observatory. By Robert Woodhouse, A.M. F.R.S. | 246 | |
| On the fossil Elk of Ireland. By Thomas Weaver, Esq. | 246 | |
| Microscopical Observations on the Materials of the Brain, and of the Ova of Animals, to show the analogy that exists between them. By Sir Everard Home, Bart. V.P.R.S. | 247 | |
| On new Compounds of Carbon and Hydrogen, and on certain other Products obtained during the Decomposition of Oil by Heat. By M. Faraday, F.R.S. | 248 | |
| Account of the Repetition of M. Arago's Experiments on the Magnetism manifested by various Substances during the Act of Rotation. By C. Babbage, Esq. F.R.S. and J. F. W. Herschel, Esq. Sec. R.S. | 249 | |
| On the Magnetism developed in Copper and other Substances during Rotation. In a Letter from Samuel Hunter Christie, Esq. M.A. &c. to J. F. W. Herschel, Esq. Sec. R.S. | 251 | |
