TABLE OF CONTENTS. 



NUMBER L v.— JULY. 



Page 

 Mr, W, Sturgeon on the Thermo-Magnetism of Homogeneous 



Bodies ; with illustrative Experiments {continued) 1 



Mr. J. E. Drinkwater on Simple Elimination 24< 



Prof. Encke on the Solar Eclipses and Transit of Mercury over 



the Sun's Disc in 1832 28 



Rev. P. Keith on the Conditions of Life (continued) 32 



Proceedings of the Royal Society 4?! 



Geological Society ^S 



. Astronomical Society 51 



. Zoological Society 55 



at the Friday-Evening Meetings of the Royal 



Institution of Great Britain ^^ 



Dr. Forster's Account of an Aerial Voyage made in a Balloon 



on Saturday the 30th of April 1831 67 



New Patents 69 



Occultations of Planets and fixed Stars by the Moon, in July 



1831. Computed for Greenwich, by T. Henderson, Esq.; 



and circulated by the Astronomical Society 71 



Dr. Burney's Results of a Meteorological Journal for 1830, 



kept at the Observatory of the Royal Academy, Gosport, 



Hants 72 



Mr. Giddy's Extract from the Meteorological Journal kept at 



Penzance 77 



Meteorological Observations 78 



Meteorological Observations made by Mr. Thompson at the 



Garden of the Horticultural Society at Chiswick, near 



London; by Mr. Giddy at Penzance, Dr. Burney at Gosport, 



and Mr. Veall at Boston 80 



NUMBER LVL— AUGUST. 



Mr. J. W. Lubbock on some Problems in Analytical Geometry. 81 

 Mr. J. Nixon's Particulars of the Measurement, by various 



Methods, of the instrumental Error of the Horizon-Sector 



described in Fhil. Mag. vol. lix. (continued) 88 



Mr. W. J. Henwood's Notes on some recent Improvements of 



the Steam-Engines in Cornwall 97 



Mr. J. Prideaux on Chemical Symbols and Notation; in Reply 



to Professor Whewell 104. 



a 2 Mr. H. 



