Page:Proceedings of the Royal Society of London Vol 4.djvu/11

Rh Notice relative to the form of the Blood.particles of the Ornitharhgnchus hystriz. By John Davy, M.D. page 232

Researches on Electra—chemical equivalents, and on a. supposed dis- crepancy between some of them and the atomic weight of the same

bodies, as deduced from the theory of isomorphism. By Lieut.- Colonel P. Yorke .. . 232

Second series of Apprommate Deductions made from about 50,000 observations taken during the years 1836, 1837, and 1838, at the P. Louis Observatory, Mauritius, {our times each day; namely, at 8 11.14., at noon, and at 4 and 8 P.M. By J. A. Lloyd, Esq. F.R.S. 232

On the Solubility of Silica by Steam ; with an account of an experi- ment on the subject, conducted in the East Indies, by Julius Jef- freys, late of the Hon. East India Company’s Medical Establishment 233

Contributions to the Chemical History of Archil and of Litmus. By Robert Kane, M.D. M.R.I.A. .. 233

On the Corpuscles of the Blood. By Martin Barry, M.D. F.R.S. .. 234

Letter from G. G. Anson, Esq. addressed to the President, enclosing a specimen of a deposit with which nine acres of land near Exeter, belonging to Lord Radnor, had been covered after the subsidence of a ﬂood, and which was sent by H.R.H. Prince Albert, 238

Description of the Specimen referred to in the preceding letter. By John Lindley, Ph. D. F.R.S ................... 238

An Account of Experiments on the Reﬂecting Telescope. By the Right Hon. Lord Oxmantown,

On the theoretical explanation of an apparently new Polarity in Light. By G. B. Airy, Esq. M.A. F.R.S. Astronomer Royal 239

On the Ferrosesquicyanuret of Potassium. By Alfred Smee, Esq. 239

On the inﬂuence of Iodine in rendering several argentine compounds, spread on paper, sensitive to light -, and on a new Method of pro-

ducing, with greater distinctness, the Photogenic Image. By Mr. Robezt Hunt ........................................ 239

Hourly Observations of the Barometer and Thermometer at sea, on the 2lst ofMarch, 1840. By Major—GeneralA. Lindsay, H.E.I.C.S. 239

On the Constitution of Pigotite, and on the Mudesous and Mudesic Acids. By James F. W. Johnston Esq. F.R.S ........ .......... .. 239

On the Constitution of the Resins—Part V. By James F. W. Johnston, Esq. M.A. .. 241

Researches on the Tides.—Twelfth Series. On the Laws of the Rise and Fall of the Sea’s surface during each tide. By the Rev. W. \Nhewell, B.D. F.R.S. Fellow of Trinity College, Cambridge 242

Researches in Embryology. Third Saies Additional Observations. By Martin Barry, M.D. F.R.S.   243

Description of a. Calculating Machine invented by Mr. Thomas Fow- ler, of Torrington in Devonshire. By Augustus De hiorgan, Esq. 243

On the Minute Structure and Movements of Voluntary Muscles, in a letter addressed to R. B. Todd, M.D. F.R.S. 8m. By “William Bowman, Esq. Demonstrator of Anatomy in King's College, Lon- don, and Assistant Surgeon to King’s College Hospital .......... 244

Supplement to a. paper ‘On the Theroetical Explanations of an appas