[ vi 3 



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 Moons 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 Militajy Aca- 

 demy. Communicated by S. Hunter Christie, Esq., M.A., Sec. M.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. 



