CONTENTS. Ill 



ART. PAGE 



II. Chemical Science. 



1. On the Action of Heat and Pressure on certain Fluit^s. By 

 M. le Baron Coe^niard de la Tour. 2. Berthier on Sulphurets 

 produced from Sulphates. 3. On Compounds of Nickel, by J. L. 

 Lassaig-ne. 4, On Indigo, Cerulin, Phenicin, &c., by Mr. Crum. 

 5. Robiquet on Volatile Oil of Bitter Almonds. 6. Action of Ani- 

 mal Charcoal in the Refining of Sugar. 7. Refining, or toughening 

 of Copper. 8. Action of Ammoniacal Gas on Copper. 9. Esti- 

 mation of Carbonic Acid in Mineral Waters. 10. Plumbago in 

 Coal-gas Retorts. 11. Test of the Dryness of Air or Gases. 12. 

 Variation of Thermometers. 13. Blue Iris Test Colour. 14. 

 Succinic Acid in Turpentine. 15. Cinnabar. 16. Dobereiner's 

 Apparatus for making Extracts. 17. Heat from Friction of a Solid 

 and Fluid. 18. Condensation of Carbonic Acid and other Gases 

 into Liquids. 19. Electricity of a Cat. 23. Magnetism of Solar 

 Rays. 21. Inflammation of Powder under Water . . . 145 



III. Natural History. 



1. On the Ascent of Clouds in the Atmosphere, by M. Fresnel. 

 2. .^rolite of Espinal. 3. Large Meteor. 4. Fall of Rain in the 

 Tropics. 5. New Comet. 6. Analysis of Uranite. 7. Native 

 Phosphate of Alumina. 8. Crystallized Stalactitic Quartz. 9. 

 Ammonia in Lava. 10. Muriate of Ammonia from Coal Strata. 

 11. Waters of Carlsbad. 12. On the Flowers of the Meadow Saf- 

 fron. 13. Return of Captain Laing from the Solima Territory, in 

 Africa. 14. Hauy's Collection of Minerals. 15 Organic Re- 

 mains. 16. Change of Water at Falls. 17. New Species of Fungi. 

 18. Preservation of Echini, Asterise, Crabs, &c. 19. African 

 Geography 165 



XIX. Meteorological Diary for the Months of December, 1822, 



and January and February, 1823 .... 174 



TO OUR READERS AND CORRESPONDENTS. 



The serious inconvenience and delay occasioned in the printing of 

 this Journal, by allowing private copies of particular papers to be 

 struck off for their respective authors, obliges us very reluctantly to 

 announce to our con-espondents, the absolute necessity of discontinuing 

 that practice in future. 



