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THURSDAY, FEURUARY 6. tions of potassium and sodium with ammonia.--On the ROYAL SOCIETY, at 4-30. absorption of the ultra-violet rays by some organic substances LINNEAN SOCIETY, at 8.-On the Stamens and Setze of Scirpea:( ! belonging to the fatty series, by MM. J. L. Soret and Alb. A.
Clarke, F.R.S.-On the Flora of Patagonia: John Ball, F.R.S.
CHEMICAL SOCIETY, at 8 --Ballot for the Election of Fellows. Thes Rilliet. These studies, which to a large extent confirm the of Nitrogen : Prof. Ramsay, F R.S. -Studies on the Constitution alle conclusions of Messrs. Hartley and Huntington (Philosophical Derivatives of Naphthalene: Dr. Armstrong and W.P. Wynne Transactions of the Royal Society, 1879), show in a general way
Action of Chromium Oxychloride on Nitrobenzole: G. G. Hendes
J. Morrow Campbell. that the measurement of the absorption of the ultra-violet rays ROYAL INSTITUTION, at 3.-Sculpture in Relation to the Age: E4r constitutes a delicate means of estimating the purity of organic Roscoe Mullins. substances.-On the refracting powers of double salts in solu
FRIDAY, FEURUARY 7. tion, by M. E. Doumer. These researches have been carried PHYSICAL SOCIETY, at 5:-Annual General Meeting -On Galvancers on by the same method which enabled the author to determine
Prof. W. E. Ayrton, F.R.S., T. Mather, and W. E. Sumpner the refracting powers of simple salts. The results, which are GEOLOGISTS ASSOCIATION, at 7-30.-Annual General Meeting – Nste
Carbon Deposit in a Blake Telephone Transmitter: F. B Have here tabulated, show that the molecular refracting power of a the Nature of the Geological Record : The President double salt is equal to the sum of the molecular refracting powers SOCIETY OF Arts, at 5.- The Utility of Forests and the Study of Fores. of the constituent simple salts; and in general, the molecular INSTITUTION OF CIVIL ENGINEERS, at 7.30.-Reclamation of Land on the refracting power of any salt, simple or double, is proportional to River Tees : Colin P. Fowler. the number of valences of the metallic part of the salt.-Papers ROYAL INSTITUTION, at 9.-The London Stage in Elabeth's Reso were read by M. Ph. A. Guye, on the molecular constitution of
Henry B. Wheatley, bodies at the critical point; by M. Raoul Varet, on the reactions between the salts of copper and the metallic cyanides; Royal Botanic SOCIETY, at 3-45
SATURDAY, FERRUARY 8. by MM. C. Chabrié and L. Lapicque, on the physiological ROYAL INSTITUTION, at 3:- The Natural History of the Hanse, action of selenious acid ; and by M. L. de Launay, on the its Extinct and Existing Allies : Prof. Flower, C.B., F.R.S. geology of the island of Lesbos. M. de Launay considers the volcanic eruptions of this island as comparatively recent, possibly not older than the Pliocene epoch, and doubtless contemporary with the disturbances resulting in the creation of the Ægean Sea
PAGE in a region previously forming a vast marshy plain with shallow lakes.
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