Erratum

XVIII. On the Nervous Ganglia of the Uterus. By Robert Lee, M.D., F.R.S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 269 XIX. On a Cycle of Eighteen Years in the Mean Annual Height of the Barometer in the Climate of London, and on a constant variation of the Barometrical Mean according to the Moon's Declination. By Luke Howard, Esq., F.R.S. . . 277 XX. Computation of the Ratio of the Diameter of a Circle to its circumference to 208 places of figures. By William Rutherford, Esq., of the Royal Military Academy. Communicated by S. Hunter Christie, Esq., M.A., Sec. R.S. &c. &c. 281 XXI. Researches in the Theory of Machines. By the Rev. H. Moseley, M.A., F.R.S., Professor of Natural Philosophy and Astronomy, King's College, London 285 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 APPENDIX. Presents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [1] Meteorological Journal kept at the Apartments of the Royal Society, by order of the President and Council. ERRATUM. Page 229, line 2, for to prolong themselves into lymph, read to prolong themselves into the lymph.