CONTENTS. 



Page 

 On certain Phenomena resulting from the Action of Mercury upon 



different Metals. By J. F. DANIELL, F.R.S. and M.R.I. . 1 

 On the means of giving a Fine Edge to Razors, Lancets, and other 

 cutting Instruments. By THOMAS A. KNIGHT, Esq., F.R.S,, 

 Pres. oftheHor. Soc., &c. . . . -I 3 

 On the Peculiar Habits of Cleanliness in some Animals, and parti- 

 cularly the Grub of the Glow-worm. By J RENNIE, A.M., 

 andF.L.S 15 



Description and Application of a Torsion Galvanometer. By WIL- 

 LIAM RITCHIE, A.M., F.R.S., Ass. Mem. S.A. for Scotland, 

 Rector of the Royal Acad. of Tain . . , '" .29 



Practical and Philosophical Observations on Natural Waters. By 

 WILLIAM WEST, Esq. . . . . .38 



General Remarks on the Weather in Madagascar, and chiefly at its 

 Capital, Tananarivou; with a Meteorological Journal. By 

 ROBERT LYALL, Esq., Brit. Res.-Agent, Member of many 

 Foreign and Brit. Societies. [Communicated by J. F. DANIELL, 

 Esq.] ....... 47 



On the Elucidation of some Portions of the Fabulous History of 

 Greece, by the Application of the Analytical Principles of Phi- 

 lology. By WILLIAM SANKEY, A.M., &c. . . .57 



On the Limits of Vaporisation. By M. FARADAY, F.R.S., Director 

 of the Laboratory of the Royal Institution, &c. ' . .70 



On the Effects of Electricity upon Minerals which are phospho- 

 rescent by Heat. By THOMAS J. PEARSALL, Ch. Assist, in the 

 Royal Institution . . . . . .77 



On the Development of the several Organic Systems of Vegetables, 

 with reference to their Functions ; and especially on the Respira- 

 tion of Plants, as distinguished from their Digestion. By GIL- 

 BERT T. BURNETT, Esq. . . . . .83 



b 



