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TABLE OF CONTENTS, 



NUMBER I.— JULY. 



Page 

 Mr. Boner on the Variation of the Mariner's Compass, its Cause, and the 



periodical Revolution of the Magnetic Pole .'...•..... 7^ 7. 1 



Mr. Scanlan on a Compound of Iodine and Carbon ;..'.'..'.;?:. 7.'. ik 



Dr. Traill on Copper Sheathing 15 



Prof. Sedgwick on Diluvial Formations 18 



Mr. South's Corrections in Right Ascension of 37 Principal Stars 38 



Col. Beaufoy's Astronomical Observations 44 



Mr. Nixon's Explanation of the Theory of the Barometrical Measurement 



of Heights {continued) 44, 



A Letter from Dr. Black to James Smithson, Esq. desciibing a very sensi- 

 ble Balance 52 



Mr. De la Becbe on the Diluvium of Jamaica [,4. 



Mr. Gray on the Genus Ursus of Cuvier, with its Divisions into Sub- 

 genera / 5g 



Analytical Account of the Philosophical Transactions for 1824, Part II.. . 62 



Proceedings of the Royal Society QQ 



'■ Linnean Society 67 



■ Astronomical Society gg 



Preparation of pure Potash 72 



Mr. Dalton's Process for determining the Value of Indigo 73 



Geological Situation of the Beryl 74 



Description of Levey ne, a new Mineral Species , 75 



Astronomical Prize 76 



Falling Star seen at Mid-day , , . , 76 



Notice regarding Copernicus , 76 



New Scientific Books . 77 



New Patents. . c ♦ 77 



Mr. Howard's Meteorological Journal 79 



NUMBER II.— AUGUST. 



Mr. Nixon's Explanation of the Theory of the Barometrical Measurement 



of Heights {continued) 81 



Mr. Gray's Synopsis of the Genera of Cirripedes arranged in Natural Fa- 

 milies, with a Description of some new Species <)7 



Dr. Roget on an Optical Deception. (With a Plate.) IO7 



Col. Beaufoy's Astronomical Observations • 113 



Mr. Mill on the Preparation of Acetate ofSoda 113 



