CONTENTS. 
I. On the Chemical Action of the Rays of the Solar Spectrum on Preparations of Silver 
and other Substances, both metallic and non-metallic, and on some Photographic 
Processes. By Sir John F. W. IIerschel, Bart. K.IP. V.P.R.S. &;c. page 1 
II. Experimental Researches in Electricity. — Sixteenth Series. By Michael Fa- 
raday, Esq., D.C.L. F.R.S. Fullerian Prof. Chem. Royal Institution, Corr. 
Mernb. Royal and Imp. Acadd. of Sciences, Paris, Petersburgh, Florence, 
Copenhagen, Berlin, Gottingen, Modena, Stockholm, S$c. &fc. . . . . 61 
III. Experimental Researches in Electricity . — Seventeenth Series. By Michael Fa- 
raday, Esq., D.C.L . F.R.S. Fullerian Prof. Chem. Royal Institution, Corr. 
Mernb. Royal and Imp. Acadd. of Sciences, Paris, Petersburgh, Florence, 
Copenhagen, Berlin, Gottingen, Modena, Stockholm, 8$c. &;c 93 
IV. Contributions to Terrestrial Magnetism. By Major Edward Sabine, R.A. 
V.P.R.S 129 
V. A Supplement to a Paper entitled “ Remarks on the Theory of the Dispersion of 
Light, as connected with Polarization.''’ By the Rev. Baden Powell, M.A. 
F.R.S. F.G.S. F.R.Ast.S., Savilian Professor of Geometry in the University of 
Oxford 157 
VI. Additional Note to the Eleventh Series of Researches on the Tides. By the Rev. 
W. Whewell, B.D. F.R.S., Fellow of Trinity College, Cambridge . . 161 
VII. An Account of the Shooting Stars of 1095 and 1243. Bi/ Sir Francis Palgrave, 
K.H. F.R.S. 8$c 175 
