. I. Researches on Chemical Equivalence. Part I. Sodic and Potassic Sul. phates. By EDMUND J. MILLS, D.Sc., F.R.S., “ Young" Professor of Technical Chemistry in Anderson's College, Glasgow, and T. U. II. Researches on Chemical Equivalence. Part II. Hydric Chloride and Sulphate. By EDMUND J. Milis, D.Sc., F.R.S., and JAMES HOGARTH 270 III. Researches on Lactin. By EDMUND J. Mills, D.Sc., F.R.S., “Young Professor of Technical Chemistry in Anderson's College, Glasgow, and 273 IV. On the Microrheometer. By J. B. HANNAY, F.R.S.E., F.C.S., lately Assistant Lecturer on Chemistry in Owens College, Manchester . 279 V. Limestone as an Index of Geological Time. By T. MELLARD READE, 281 283 I. On the Effect of Heat on the Di-iodide of Mercury, HgI,. By G. F. RODWELL, Science Master, and H. M. ELDER, a Pupil, in Marlborough II. A Comparison of the Variations of the Diurnal Range of Magnetic Declination as recorded at the Observatories of Kew and Trevandrum. By BALFOUR STEWART, F.R.S., Professor of Natural Philosophy in Owens College, Manchester, and MORISABRO HIRAOKA III. On the Determination of the Rate of Vibration of Tuning Forks. By HERBERT MCLEOD, F.C.S., and GEORGE SYDENHAM CLARKE, IV. On certain means of Measuring and Regulating Electric Currents. By . Part I (1878), price £1 168., ready for delivery. Separate copies of Papers in the Philosophical Transactions, commencing with 1875, I. On certain Dimensional Properties of Matter in the Gaseous State. Part I. Experimental Researches on Thermal Transpiration of Gases through Porous Plates, and on the Laws of Transpiration and Impulsion, including an Experimental Proof that Gas is not a Continuous Plenum. Part II. On an Extension of the Dynamical Theory of Gas which includes the Stresses, Tangential and Normal, caused by a Varying Condition of the Gas, and affords an explanation of the Phenomena of Transpiration and Impulsion. By OSBORNE REYNOLDS, F.R.S., Professor of Engineering at Owens College, Manchester 304 II. Absorption of Gases by Charcoal. Part II. On a new Series of Equivalents or Molecules. By R. Angus SMITH, Ph.D., F.R.S. 322 . February 13, 1879. I. Note on the Development of the Olfactory Nerve and Olfactory Organ of Vertebrates. By A. MILNES MARSHALL, M.A., D.Sc., Fellow of St. 324 . II. On the Development of the Skull and its Nerves in the Green Turtle (Chelone midas), with Remarks on the Segmentation seen in the Skull of various types. By Professor W. K. PARKER, F.R.S. 329 III. On an Extension of the Phenomena discovered by Dr. Kerr and described by him under the title of "A New Relation between Electricity and 346 m For continuation of Contents see 4th page of the Wrapper. Price Three Shillings. Reports, &c. (continued). giubileo episcopale offerto dalle tre Romane Accademie Ponti. The Accademia Pontificia de' Nuovi Lincei. Arya Bhatta. The Elements of Plane Geometry in 48 propositions, from the Sanscrit text, edited on the principle of Euclid, by Jasoda Nandan Sircar. 12mo. Calcutta 1878. The Editor. Brongniart (Ch.) Note sur un nouveau genre d’Orthoptère fossile de la famille des Phasmiens. 8vo. Paris. Note rectificative sur quelques Diptères tertiaires. 8vo. Lille 1878. The Author. Fayrer (Sir Joseph) F.R.S. On the Bael Fruit and its Medicinal Properties and Uses. 12mo. London 1878. The Author. Hooker (Sir J. D.), F.R.S. The Flora of British India. Part 5. 8vo. London 1878. The India Office. Lubbock (Sir John), F.R.S. Pre-historic Times, as illustrated by Ancient Remains and the Manners and Customs of Modern Savages. Fourth edition. 8vo. London 1878. The Author. Matton (L. P.) Quadrature du Cercle, son existence prouvée. 4to. Lyon 1878. Polysection et Polysectrices. 4to. 1878. The Author. Mourek (V. E.) A Dictionary of the English and Bohemian Languages. 12mo. Prague 1879. The Author. Roscoe (H. E.), F.R.S., and C. Schorlemmer, F.R.S. A Treatise on Chemistry. Vol. II. Metals. Part 1. 8vo. London 1878. The Authors. February 6, 1879. W. SPOTTISWOODE, M.A., D.C.L., President, in the Chair. The Presents received were laid on the table, and thanks ordered for them. The following Papers were read : VOL. XXVIII. z |