Page:Proceedings of the Royal Society of London Vol 4.djvu/19

Rh On Flbre. Additional Observations. By Martin Barry, M.D. F.R.S.Lond. and Ed .. . page 384

Barometrical Observations, showing the eﬂ‘eet of the Direction of the Wind on the Difference between distant Barometers. By Lieut-

Colonel Philip Yorke, S. F. Guards ........ ........ .. 386 On the Rectiﬁcation and Quadrature of the Spherical Ellipse. By James Booth, Esq. M.A. Principal of Bristol College ............. .. 387

On the Transparency of the Atmosphere, and the Law of Extinction of the Solar Rays in passing through it. ByJames D. Forbes, Esq.

On the Speciﬁc Inductive Capacities of certain Electric Substances. By William Snow Harris, Esq. 392

On the Action of the Rays of the Solar Spectrum onVegetable Colours. By Sir John Frederick William Herschel, Bart. K.H. EELS. 393

Experimental Researches on the Elliptic Polarization of Light. By the Rev. Baden Powell, M.A. F.R.S. Savilian Professor of Geometry in the University of Oxford. ....................... 394

On the Inﬂuence of the Moon on the Atmospheric Pressure, as deduced from the Observations of the Barometer made at the Magnetic Ob- servatory at St. Helena. By Lieut. J. H. Lefroy, ILA. late Director of that Observatory .................................................... 395

Notices of the Aurora Australis from the 1st to the 3150: of March 1841, made on board H .M.S. Erebus; extracted from the log-hook. By Capt. James Clark Ross, RN. F.R.S. 395

An Appendix to a paper on the Nervous Ganglia of the Uterus, with a further Account of Nervous Structures of that Organ. By Robert Lee, M.D. F.R.S. 395

Magnetic-term Observations of the Declination, Inclination and Total Intensit, made at the Magnetic Observatory at Prague, for Fe- bruary, K/Iarch, and April 18—12. By C. Kreil, Director of the Prague 396

Magnetic and Meteorological Observations for February 1842, taken at the Magnetic Observatory at Madras. Presented by the Honour— able Court of Directors of the East India Company. .. 396

Magnetic and Meteorological Observations from May 1841 to Marc 1842, made at the Observatory established by the Rajah of Travan- core, at Trevandruin, transmitted to the Royal Society by command of His Highness the Rajah. By John Caldecott, Esq. FJLS. Di- rector of the Observatory at Trevandrum...... ......................... .. 396

Postscript to a paper ‘ On the Action of the Rays of the Solar Spec- trum on Vegetable Colours.’ By Sir John Frederick William Her— schel Bart. F.1LS. 8:0. . ........................ .....................  397

Observations de la variation de la déclinaison et intensité horizontale magnétiques observées 5. Milan pendant vingt-quatre heures con- sécutives, le 22 et 23 Juin, le 20 et 21 Juillet, 1e 26 et 27 d‘Aout, le 21 et 22 Septembre, et le 19 et 20 Octobre, 1842, rapportées par Robert Strambrecchi, premier éléve adjoint ............................ .. 398

On certain improvements on Photographic Processes described in a