TABLE OF CONTENTS. 



NUMBER XXV.— JANUARY, 1815. 



' Page 



Sketch of the latest Improvements in Physical ScieHces. By Dr. Thomson 1 

 Solution of a Problem of Col. Silas Titus. By the Abbe de Bui^e. With 



a Plate 53 



Experiments on pure Nickel, its Magnetic Quality, and its Deportment 



when united to other Bodies. By W. A. Lampadius 61 



Magnetical Observations at Hackney Wick. By Col. Beaufoy 63 



On the Conversion of Cast-iron Pipes into a Substance bearing re- 

 semblance to Plumbago. By Dr. Henry 66 



Proceedings of the Royal Society, Nov. 24, 30, Dec. 8, 13, and 1'2, 1814 68 



— — — Linnaean Society, Dec. 6 and 20, 1814 70 



■ Wernerian Society, Nov. 12, 1815 ibid. 



Notices of Lectures 71 



Operation for the Cure of Popliteal Aneurism 72 



An Air Volcano 7j 



Alathematical Problem ibid. 



Of Burning Gas in the A|)pennines 74 



Weather in Iceland in the Winter of 1813-14 ibid. 



Chromate of Iron near Baltimore 7-^ 



Analysis of Magnetic Pyrites ibid. 



While-stone 77 



Floetz Trap Rocks ibid. 



Granite Rocks in Roxburghshire ibid. 



Notice of the Death of Hoffman ibid. 



Anecdote of Dr. Steffens ibid. 



Transition Lime-stone in Carinthia, Stiria, &c 78 



Of Porphyry ibid. 



Interior of New Holland ibid. 



New Patents ibid. 



Meteorological Table and Observations, Nov. 4 to Dec. 3, 1814 7S 



NUMBER XXVI.— FEBRUARY. 



Essay on Rents in the Earth, and the Arrangement of the Matter in them. 



By Mr. John B. Longmire 81 



Experiments to determine the Definite Proportions in which the Ele- 

 ments of Organic Nature are combined. By Dr. Berzelius, continued Q3 



A Memoir on Iodine. By M. Gay-Lussac 101 



Observations on the Sap of the Vine. By Dr. Prout IO9 



On the Use of the Cerebellum, on the Spinal Marrow, and on Respira- 

 tion. By Dr. Cross Ill 



Observations on Tanning. By Mr. Murray 112 



On Galvanism as a Solvent of Urinary Calculi. By Mr. Wm. Stark 114 



Answer to Mr. R. Phillips's Animadversions on Mr. Hume 11(> 



Notices respecting the Old Silver Mine in Linlithgowshire. By Dr. 



Fleming 118 



All Address to those Chemists who wish to examine the Laws of Che- 

 mical Proportions, and the Theory of Chemistry in general. By Dr. 



Ber/elius 1 2S 



Magnetical Observations at Hackney Wick. By Col. Beaufoy 131 



Critical Analysis of the Memoirs of the Wernerian Natural History 



Society, Vol. H. Part I 13 t 



Proceedings of the Royal Society, Jan. 12 and ig ;.»«.WS( 



