“ V.P.R.S. 49 On the Structure of the Crystalline Lens in Fishes and Quadrupeds, as ascertained by its Action on Polarized Light. By David Brewster, LL.D. F.R.S. Lond. and Edin. 50 Some farther Account of the Fossil Remains of an Animal, of which a Description was given to the Society in 1814. By Sir Everard Home, Bart. V.P.R.S. 51 Farther Observations on the Feet of Animals whose progressive Motion can be carried on against Gravity. ”

“ By Mr. Charles Rumker 150 An Account of the Re-measurement of the Cube, Cylinder, and Sphere, used by the late Sir George Shuckburgh Evelyn, in his Inquiries respecting a Standard of Weights and Measures. By Captain Henry Kater, F.R.S. 150 An Account of Observations made with the Eight-Feet Astronomical Circle, at the Observatory of Trinity College, Dublin, since the Beginning of the Year 1818, for Investigating the Effects of Parallax and Aberration on the Places of certain fixed Stars; also the Comparison of these with former Observations for determining the Effects of Lunar Nutation. ”

“ Part II. By C. Babbage, Esq. 41 Experiments and Observations to prove that the beneficial Effects of many Medicines are produced through the Medium of the circulating Blood, more particularly that of the Colchicum autumnale upon the Gout. By Sir Everard Home, Bart. V.P.R.S. 41 An Appendix to a Paper on the Effects of the Colchicum autumnale on Gout. By Sir Everard Home, Bart. V.P.R.S. 42 On the Cutting Diamond. By William Hyde Wollaston, M.D. Sec. R.S. 43 An Account of the Discovery of a mass of native Iron in Brasil. By A. F. Mornay, Esq. ”

“ F.R.S. 57 Observations on an astringent Vegetable Substance from China. By William Thomas Brande, Esq. Sec. R.S. 58 Some Researches on Flame. By Sir Humphry Davy, LL.D. F.R.S. V.P.R.I. 59 Some new Experiments and Observations on the Combustion of gaseous Mixtures; with an Account of a Method of preserving a continued Light in Mixtures of inflammable Gases and Air without Flame. By Sir Humphry Davy, LL.D. F.R.S. V.P.R.I. 61 De la Structure des Vaisseaux Anglais, consideree dans ses derniers Perfectionnements. ”