On the permeability of transparent screens of extreme tenuity of radiant heat. By William Ritchie, A.M., rector of Tain Academy. Communicated by J. F. W. Herschel, Esq., Sec. R.S. [p380]
On the derangement of certain transit instruments by the effects of temperature. By Robert Woodhouse, A.M., F.R.S., &c.
On some of the compounds of chromium. By Thomas Thomson, M.D., F.R.S. L. and E., Professor of Chemistry, Glasgow.
Rules and principles for determining the dispersive ratio of glass; and for computing the radii of curvature for achromatic object-glasses, submitted to the test of experiment. By Peter Barlow, Esq., F.R.S., Mem. Imp. Ac. Petrop, &c.
On the change in the plumage of some hen-pheasants. By William Yarrell, Esq., F.L.S. Communicated by William Morgan, Esq., F.R.S.
On the secondary deflections produced in a magnetised needle by an iron-shell, in consequence of an unequal distribution of magnetism in its two branches. First noticed by Captain J. P. Wilson, of the Honourable East India Company’s ship Hythe. By Peter Barlow, Esq., F.R.S., Mem. Imp. Sc. Petrop.
On the difference of meridians of the royal observatories of Greenwich and Paris. By Thomas Henderson, Esq. Communicated by J. F. W. Herschel, Esq., Sec. R.S.
Some observations on the effects of dividing the nerves of the lungs, and subjecting the latter to the influence of voltaic electricity. By A. P. W. Philip, M.D., F.R.S. L. and E.
On the effects produced upon the air-cells of the lungs when the pulmonary circulation is too much increased. By Sir Everard Home, Bart., V.P.R.S.
Theory of the diurnal variation of the magnetic-needle, illustrated by experiments. By S. H. Christie, Esq., M.A., F.R.S.