IV 
CONTENTS. 
Magnetism. 16 . Improved Ship’s Compass, - 397 
Mechanics. 17- Mr Babbage’s Calculating Machinery, ib. 
Meteorology. 18. Remarkable Balls of Snow at Brunswick. 
19* Quantity of Rain in America. 20. On the Periodical 
reappearance of Thunder-Storms. 21. Periodical Rise and 
Fall of the Barometer. 22. Influence of Atmospheric Pres- 
sure on the Bulbs of Thermometers. 23. Whirlwind at Scar- 
borough. 24. Extraordinary depression of the Barometer 
in February 1823, - - - - 397-400 
II. CHEMISTRY. 
25. Observations on the Two New Fluids in Minerals. 26. 
Crystallization of Acetic Acid by Pressure. 27* Conversion 
of Atmospheric Air into a Fluid by Pressure. 28. Persul- 
phate of Iron and Ammonia. 29- Boracic Acid in Tour- 
maline. 30. Varying quantity of Boracic Acid in Tourma- 
line. 3J. Professor Silliman’s Additional Observations on 
the Fusion of Carbonaceous Bodies. 32. Dr Wollaston on 
Metallic Titanium. 33. Acid Earth of Persia. 34. Bitu- 
men, and a Volatile Fluid in Minerals. 35. Native Sulphate 
of Iron and Alumina. 36. Iron Malleable immediately from 
the Furnace. 37* Experiments on Palladium, 400-404 
III. NATURAL HISTORY. 
Mineralogy. 38. Sale of the Collection of Minerals of the 
late Abbe Haiiy. 3Q. Professor Lenz’s Works on Mineralo- 
gy. 40. Non-occurrence of Chalk in the Island of Creta, 404-406 
Zoology. 41. Electricity elicited from the Domestic Cat. 42. 
Mammifera of Scandinavia. 43. Swedish Ornithology. 44. 
Sharks and Rays. 45. Fossil Tortoises, - 407, 408 
Entomology. 46. Progress of Entomology in Sweden. 47. 
Insects of Lapland. 48. Synonymy of Insects. 49* In- 
sects in Amber, - 407, 408 
Helminthology. 50. Earth-worms multiply by Eggs, 409 
iv, general science. 
51. Probable Origin of certain Salt-springs. 52. Method of 
Cutting Steel by Soft Iron. 53. Mr Barton’s Iris-Metal Or- 
naments. 54. Destructive Volcanic Eruption in Java. 55. 
Artificial Mahogany. 56. Etching on Glass by Fluoric 
Acid. 57. Important Improvement in Tanning. 58. The 
Christian Philosopher, or the Connection of Science with 
Religion. 59- New Voyage of M. Kotzebue, - 409-412 
Art. XXXVII. List of Patents granted in Scotland from 3d 
JU119 to 18th August 1823, * 413 
