IV 
CONTENTS. 
Hydrodynamics. 7* Hr Coate’s Hydrostatical Balance. 8. Ve- 
locity of Fluids, - - - 401, 402 
Meteorology. 9* Paraselene seen at Liverpool. 10. Meteo- 
ric Stones in the Form of Leaves. 11. Delcross’s Observa- 
tions on Hail. 12. Height of Meteors from which Meteoric 
Stones are projected, - _ _ 402, 403 
II. CHEMISTRY. 
13, Five New Alkaline Bodies. 14. Curious Experiment with 
Iodine. 15. Native Combination of Sulphate of Barium and 
^ Fluoride of Calcium. l6. Flame of Hydrogen rendered 
luminous. 17- Imitations of Meteoric Iron. 18. Method 
of making Wootz. 19- Developement of Heat by freezing. 
20. Antidote against Corrosive Sublimate. 2 1 . Chrome the 
characteristic ingredient of Meteoric Stones. 22. Muriate 
of Potash in Rock-Salt. 23. Benzoic Acid, - 403, 407 
III. NATURAL HISTORY. 
Mineralogy and Geology. 24. New Ores of Lead. 25.^ 
Wahlenberg’s Geology of vSweden. 26 . Diminution of the 
Water of the Globe. 27. Relief Globe. 28. Pansner on 
the Fall of the Wolga. 29* New Works on Petrifac- 
tions, - - _ - 407, 410 
Zoology. 30. Ursus longirostris (Ursine Sloth, Shaw.') 
31. Account of a Vessel struck by a Sword-fish. 32. Pro- 
pagation of the Common Earth-Worm. 33. Preservation of 
Eggs., - - - - 410, 413 
Botany. 34. Nature of Hard Woods. 35. Uses of Iceland 
Moss. 36. Plants which have been confounded with Ani- 
mals. 37* Nocturnal Fragrance of different Plants, 413, 41 6 
IV. GENERAL SCIENCE. 
38. Proposal to winter in Spitzbergen. 39* Russian Expedi- 
tion into the Frozen Ocean, by Lieutenant Lasarew, in the 
year 1819- 40. Expedition of Discovery in America. 
41. French Expedition of Discovery. 42. Heights of diffe- 
rent Points of the Chain of Jura. 43. Temperature of the 
Lakes of Thun and Zug. 44. Singular Discovery respect- 
ing Copperplate Printing. 45. Extraordinary diversity of 
Colours used in Mosaic work. 46. Population of Van Die- 
men’s Land, - - - - 416, 419 
Art. XXX. Patents granted in Scotland since 30th May 1820, 420 
List of Plates in Vol. III. - - - ib. 
INDEX, - - - - - 421 
