TABLE OF CONTENTS. 



NUMBER I.— JULY. 



Pag« 



Biographical Account of Assessor John Goiilieb Gahn 1 



Col. Beaufoy's Astronomical Observations 



Mr Weaver on the Older Red Sandstone Formation 



Mr South's Corrections in Right Ascension of 37 Principal Stars 23 



M BonsdorrT on the Chemical Composition of Red Silver Ore. ....... . . 29 



Mr. Children on the Characters of some Mineral Substances before the ^ 



Blowpipe " *"",*" V* !■" 



MM. Ampere and Dulong on M. Rousseau's New Method of measur.ng 



the Power of Bodies to conduct Electricity ■ 3 9 



M. Bequerel on the Electro-motive Actions produced by the Contact ot ^ 



Metals with Liquids • ■••••" " 



M. Pfaff on a deoxidating Property of the Vapour of Wafe » .. —•»••■■ ** 



Mr Woodward on theTransmission of Electricity through lubes of Water 48 



Mr. Smithson on Mr. Perm's Theory concerning the Formation of the ^ 



Kirkdale Cave ■••« '""" '*."" . 



Analytical Account of the Rev. J. Topham's Epitome of Chemistry 60 



Proceedings of the Royal Society ^ 



Linnean Society 



Astronomical Society 



. , Geological Society ; " 



Nature of the free Acid ejected from the Human Stomach in Dyspepsia . . 68 



Pyroxylic and Pyroacetic Spirits ?2 



Argillaceous Iron Ore 72 



Aberthavv Limestone 72 



Composition of Tourmaline 73 



Petalite ^3 



New Localities of American Minerals • • • • • 



On the Cause of the Rotatory Motion of Camphor in Water. ■•••»-» JJ 



Improvement in Clocks • " _i_t M nfi 



Method of cleaning Gold Trinkets, and preserving engraved Copper-plates tf 



New Scientific Books g 



New Patents jg 



Mr. Howard's Meteorological Journal 



NUMBER II.— AUGUST. 



Mr. Powell's Remarks on Solar Light and Heat (<*"*"*>•"• J" 



S r H Davy on the Corrosion of Copper Sheetmg by Sea Water. 9* 



Mr! IWon the Application of Mathematics to Chemical Analyse ... 99 



/ 



