The Transactions of the Royal Society, Part II. for 1818, just published, contain:XIV. On the Parallax of certain fixed Stars. Bv the Rev. John►Brinkley, D.D. F.R.S. and Andrews Professor of Astronomy in the University of Dublin.—XV. On the Urinary Organs and Secretions of some of the Amphibia. By John Davy, M.D. F.R.S. Communicated by the Society for the Improvement of Animal Chemistry.—XVI.—On a Mai-conformation of tire Uterine System in Women ; and on some physiological Conclusions to be derived from it. In a Letter to SirEverard Home, Bart. V.P. R.S. from A. B. Granville, M.D. F.R.S. F.L.S. Physician in Ordinary to H. R. H. the Duke of Clarence ; Member of the Royal College of Physicians, and Physician-Accoucheur to the Westminster General Dispensary.— XVII. New Experiments on some of the Combinations of Phosphorus. By Sir H. Davy, LL.D. F.R.S. Vice-Fres. R. I.—XVIII • New experimental Researches on some of the leading Doctrines of Caloric ; particularly 011 the Relation between the Elasticity, Temperature, and latent Heat of different Vapours; and on thermometric Admeasurement and Capacity. By Andrew Ure, M.D. Communicated by W. H. Wollaston, M.D. F.R.S.—XIX. Observations on the Heights of Mountains in the North of England. By Thomas Greatorex, Esq. F.L.S. In a Letter to Thomas Young, M.D. For. Sec. R.S.—XX. On the different Methods of constructing a Catalogue of fixed Stars. By J. Pond, Esq. F.R.S. Astronomer Royal.—XXI. A Descrip-