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PRINTED BY RICHARD AND JOHN E. TAYLOR,

RED LION COURT, FLEET STREET.

REPORTS OF RESEARCHES IN SCIENCE.

Report on the present state of our knowledge of Refractive Indices

for the Standard Rays of the Solar Spectrum in different media.

By the Rev. BADEN POWELL, M.A., F.R.S., F.G.S., F.R. Ast. S.,

Savilian Professor of Geometry, Oxford

....

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Report on the application of the sum assigned for Tide Calcula-

tions to Mr. WHEWELL, in a Letter from T. G. BUNT, Esq.,

Bristol.

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Notice of Determination of the Arc of Longitude between the Ob-
servatories of Armagh and Dublin, By the Rev. T. R. ROBIN-
SON, D.D., &c..

....

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