TABLE OF CONTENTS. 



Page 

 NUMBER LXXIX.— JULY, 18 19. 



Biographical Notice of the late Archibald Bruce, M.D I 



On Heat and Climate. By John Leslie, Esq 5 



Analysis of a Specimen of Water, taken out of a Boiling Spring uniting 



wiihtheSea. By Dr. Thomson, F.R.S. &c 27 



On Native Hydrous Aluminate of Lead. By James Smithson, Esq 31 



On Centrifugal Force, and the Upright Growth of Vegetables. By Mr. 



Henry Meikle 32 



On a newly discovered Variety of Green Fluor Spar. By Dr. E.D.Clarke. 34 

 On the Combination of Acids with Bases, and indifferent Substances. 



By Dr. F. Serturner 3 7 



Analytical and Critical Account of Recherches sur l'ldentite" des Forces 



Chimiques et Electriques. Par M. H. C. CErsted {concluded) 47 



Proceedings of the Royal Society, April 22, 2y, May 6, 13, and 20 .... 50 

 . Society for the Encouragement of Arts, Manufac- 

 tures, and Commerce 53 



_ Royal Danish Society of Sciences 55 



Specific Gravity of Hydrogen Gas 65 



Ore of Tellurium g 6 



Native Copper °t> 



Fibrous Prehnite 67 



Necronite (a supposed new Mineral) 68 



Native Carbonate of Magnesia 69 



Picromel ••• 69 



Additional Facts respecting Gauze Veils as a Preservative from Contagion. 



By Mr. Bartlett 71 



Respiration of Oxygen Gas 71 



Some Corrections and Additions to Mr. Rice's Paper on the Weight of a 



Cubic Inch of distilled Water. By Mr. Rice 73 



Diurnal Variation of the Magnetic Needle 74 



Derangement of the Operations of delicate Balances by Electricity 7* 



Prize Questions proposed by the Roval Academy of Sciences of France for 



1821 • 74 



Natural History of the Moluccas 75 



Col. Beaufoy's Astronomical, Magnetical, and Meteorological Observa- 

 tions, for May '° 



Mr. Howard's Meteorological Journal, April 17 to May 15 79 



