Vjii CONTENTS. 



PagU 



Transition Granite 397 



Mineralogy of the North of Scotland ibid . 



Wood Tin .398 



Goniometer ibid. 



Analysis of White Stone ibid. 



Meteorological Table, Sept. 7 to Oct. 5 399 



NUMBER XXIV.— DECEMBER. 



Experiments to determine the Definite Proportions in which the Ele- 

 ments of Organic Nature are combined. By Dr. Berzelius, continued. 401 

 A Geognostical Sketch of Northumberland, Durham, and Cumberland. 



By Dr. Thomson, concluded 410 



Mineralogical Observations. By Professor Jameson 41<) 



On some Unknown Combinations of Chromic Acid with different Bases. 



By Dr. John 424 



On the Aurora Borealis. By Dr. Thomson 427 



Remarks on Mr. Hume's Paper on Barytes contained in the Philosophical 



Magazine. By Mr. R Phillips 432 



Description of a sensible and convenient Method which serves as a Mag- 

 netometer. By W. A. Lampadius 434 



Astronomical and Ma^netical Observations. By Col. Beaufoy 436" 



Observations on Mr. Goring's New Solvent for Calculi. By Mr. Armiger. 43S 



Critical An lysis of the Philosophical Transactions for 1814, Part 1 43Q. 



Proceedings of the Royal Society, Nov. 10 and 17 443 



. Linnsean Society, Nov 1 and 15 ibid. 



Royal Irish Academy, May 44<) 



Imperial Institute of France 45 1 



Notice of a Lecture 454 



Mean Temperature of different Places 465 



Interior of Spain 466 



Highest Point of Spain 'bid. 



Height of Mountains ibid. 



Baron de Humboldt 467 



Tantalum ibid. 



Further Remarks on Dr. Olinthus Gregory's Attack on the Editor of the 



Annals of Philosophy 4 69 



Live Shell-Fish in the Moss near Elgin 471 



Scientific Books in hand, Sec ,. 472 



Meteorological Table, Oct. 6 to Nov 3 473 



Index 475 



PLATES IN VOL. IV. 



Plates Page 



XX. Dr. Wilkinson on the Doctrine of Refraction 1 9 



XXI. Geognostic Map of the Mountains of Ancient Latium 115 



XXII. Dr. Wollaston's Scale of Chemical Equivalents 177 



XXIII. Mr. Fox's Scale of the Barometer and Thermometer, January to 



June, 1814 276 



XXIV. Dr. i'rout's Scale of the Quantity of Carbonic Acid Gas emitted 



from the Lungs 333 



XXV. Chemical Instruments. By Dr. Berzelius, fig. 1 — 6, p. 404. — 



A Magnetometer. By W. A. Lampadius, fig. 7 435 



XXVI. Geognostic Map of Northumberland, Durham, and Part of 



Cumberland 410 



