ii CONTENTS. 



Page 

 XII. Abstract of Meteorological Observations made in the Isle of Man from 

 1822 to 1831. By Robert Stewart, Esq. Receiver-General 

 of the Isle of Man. Communicated by Dr Hibbert, . 105 



XIII. Account of an Excursion from Lima to Pasco. In a Letter from 



Alexander Chuckshanks, Esq. to Dr Hooker, . Ill 



XIV. Account of the Russian Steppes, with Geognostical Observations made 



in a Journey to the Environs of Mont Elbrouz, in the Caucasus, 

 undertaken in 1829 by order of the Emperor of Russia. By M. 

 Kupffer of the Imperial Academy of Sciences, . 12C 



XV. Historical Notice respecting the Inflammation of Phosphorus in Va- 

 cuo. In a Letter to the Editor by Professor Moll, . 141 

 XVI. Remarks on Dr Goring's Observations on the use of Monochromatic 



Light with the Microscope. . ... 143 



XVII. Notice of the Discovery of the Termination of the Niger, in the 



Bight of Biafra, . • • 148 



XVIII. On the Diamond Mines of Panna in Bundelkhand. By Captain 



James Franklin, First Bengal Cavalry, M. A. S. . 150 



XIX. On the Discovery of Vanadium in Scotland, and on the Vanadiate of 

 Lead, a new Mineral species. By James E. \V. Johnston, 

 A. M. &c. &c. Communicated by the Author, . 1C6 



XX. On some properties in Achromatic Object-Glasses applicable to the 

 improvement of the Microscope. By Joseph Jackson Lister, 

 Esq. . • 169 



XXI. Notice respecting the proposed Scientific Meeting at York, on Mon- 

 day the 26th of September, . . . 180 

 XXII. Observations on Fossil Vegetables, accompanied by Representations 

 of their Internal Structure as seen through the Microscope. By 

 Henry Witham, Esq. of Lartington, Fellow of the Geological 

 Society of London ; of the Royal and Wernerian Societies of Edin- 

 burgh, &c. . • • • 183 

 XXIII. Register of the Barometer, Thermometer, and Rain-Gage, kept at 



Canaan Cottage. By Alex. Adie, Esq. F. R. S. Edinburgh, 190 



TO CORRESPONDENTS. 



Mr Marshall's Observations, and other papers, necessarily postponed, will ap- 

 pear in next Number. 



