XXXIII. Observations of the Summer Solstice, 1813, with the Mural Circle, at the Royal Observatory. By John Pond, Esq. Astronomer Royal, F. R. S. Read July 8, 1813. Equations for Zenith Distance. Semidiameter of the by Nautical Almanack. Mean Obliquity 28 0 59.5 66 32 21,0 10,5 28 0 49,0 66 32 10,5 23 27 49,5| * Mean Obliquity at Summer Solstice, 1812 23 27 50,5 Mean of Two Observations or Mean Obliquity, Jan. 1, 1813 23 27 50,0 I avail myself of this opportunity of correcting a very small error that was made in computing the summer solstice of 1812. The correction for the sun's latitude should have been o",6 instead of o",9, and should have been applied with the contrary sign. The obliquity thus corrected will be 23° 27′ 50′′,5. Reduction to the Solstice. Solstitial Zenith Distance with Parallax. Solstitial N. P. D. with Parallax. Correction for 's Lat. Solstitial Zenith Distance corrected for 's Lat. [304] Solstitial N. P. D. corrected for O's Lat. Nov. 5. A Description of the Collection of ancient Marbles in the British Museum with Engravings. Part I. London, 1812. 4° DONORS. The Trustees of the British Museum. A Treatise on Theatres, by George Saunders. Mr. George Saunders. 4° 8° Tracts on Mathematical and Philosophical Sub- 80 Of the Circle and the infinite Incommensurability 4° Dr. Charles Hutton. Dr. Benj. Smith Barton. Sir Humphry Davy. Mr. J. F. A. Lalouette. James Glennie, Esq. The Speech of His Royal Highness the Duke of The Editor. 1813. PRESENTS. DONORS. Nov. 5. Observations on Dr. Sturges Pamphlet respecting T. B. Howell, Esq. 8. 8° A Journal of Natural Philosophy, Chemistry, and 12. A Catalogue of the Archiepiscopal Manuscripts A Sermon preached before the incorporated So- Mr. W. Nicholson. The Editor. The Archbishop of Canterbury. R. Duppa, Esq. The Royal Academy of The Bishop of Carlisle. 4° Mr. A. E. Tartra. Mr. G. A. Marechal. De l'Opération de la Cataracte, par A. E. Tartra. 4° The Speaker of the House of Commons. Mr. Marcel de Serres. 4° Mr. B. G. Sage. 80 80 A Journal of Natural Philosophy, Chemistry, and Dec. 15. A Journal of Natural Philosophy, Chemistry, and the Arts. No. 154. The Philosophical Magazine for November. The Critical Review for November. The European Magazine for November. Mr. W. Nicholson. Mr. A. Tilloch. Dec. 17. Sui Mezzi immediate di estirpare la Povertà in 4° fol. Rotuli Hundredorum Temp Hen. IlI. et Edw. I. 1813. The Philosophical Magazine for December, 1812. The European Magazine for December, 1812. DONORS. Mr. Jos. Emmanuel Ortolani. The Commissioners of Public Records. The Proprietor. Mr. A. Tilloch. Dr. Thomas Thomson. Dr. Wm. Elford Leach. The Medical and Chirurgical Society of London. Society for the Encou ragement of Arts, Manufactures and Commerce. Feb. 4. Physiological Reflections on the destructive Ope- Thomas Forster, Esq. ration of spirituous and fermented Liquors on the Animal System, by Thomas Forster. Lon- 8° 11. A Voyage to the South Seas, undertaken by Com. Rear Admiral Bligh. mand of His Majesty for the Purpose of con. A Chart for the Purpose of exhibiting the Tract Feb. 25. A Survey of the Bay of Dublin, by Capt. Wm. Bligh, 1803. 2 Sheets. Chart of the Peninsula and Islands beyond the River Ganges, by James Horsburgh, Esq. 1813. DONORS. Rear Admiral Bligh. James Horsburgh, Esq. Mar. 4. An Introduction to Medical Literature, including Dr. Young. The Critical Review for February. 8. A Journal of Natural Philosophy, Chemistry, and Annals of Philosophy, No. 3. The Philosophical Magazine for February. Mar. 11. Appendix to the Doctrine of Life Annuities and 8° Apr. 1. An Examination of the Imposture of Ann Moore, 8° A Journal of Natural Philosophy, Chemistry, and Annals of Philosophy, No. 4. The Philosophical Magazine for March. 8. Transactions of the Royal Society of Edinburgh. 4° 29. An Account of what appeared on opening the Anatomy of the Heart, Cranium, and Brain, 1813. The Proprietor. Mr. W. Nicholson. Dr. Thomas Thomson. Dr. Henderson. The Trustees of Dr. D. Mr. W. Nicholson. Dr. Thomas Thomson. Sir Henry Halford, Bart. Edward Strachey, Esq. Dr. Alex. Ramsay. A Treatise on new Philosophical Instruments for Dr. David Brewster. Experiments on Light and Colours, by David |