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