iv CONTENTS. 
the Inflexion of Light. 17. Phosphorescence of the Sul- 
phates of Quinina and Cinchonina. 18. Singular Effect of 
Heat on the Spinelle of Ceylon and Aker, - 178-180 
Acoustics. 1 .9. On Sounds excited in Hydrogen Gas, 180 
Electricity. 20. On the ordinary and extraordinary Electri- 
city of Minerals, - - - 181 
Meteorology. 21. Formation of Clouds. 22. Aurora Borea- 
lis in Faroe and Shetland. 23. Great Fall of the Barome- 
ter on the 25th December 1821. 24. Meteor of Lightning 
accompanying the Fall of the Barometer on the 25th De- 
cember 1821. 25. Storm at Genoa on the 24th December 
1821. 26. Devastations in the Canton of Appenzel. 27- 
Inundations accompanying the Fall of the Barometer. 28. 
Earthquake accompanying the Fall of the Barometer, 181-184 
II. CHEMISTRY. 
29. Nitrate of Soda discovered in the district of Tarapaca in 
Peru. 30. Analysis of different kinds of Mica. 31. Analy- 
sis of Alum. 32. On the Heat developed in Solutions crys- 
tallised by Exposure to the Air. 33. On the Existence of 
Mercury in Sea-Water, - - 184-186 
III. NATURAL HISTORY. 
Mineralogy. 34. Merian’s Account of Alpine Limestone. 35. 
Oxygen in Rock-crystal, - - - 1 86 
Botany. 36. Distribution of Vegetables in Madeira, 187 
Zoology. 37* Dr ^scholz on Skeletons of Insects. 38. M. 
Kuhfs Zoological Observations. 39. Toad found alive in 
the Centre of a Stone. 40. Discovery of Bones of the 
Megatherium. 41. Bones of the Mammoth. 42. Bones of 
Quadrupeds. 43. Cave near Sundwich, - 187-188 
IV, general SCIENCE. 
44. Crystallisation of Water in Regular Rhomboids. 45. Oil 
for Watch and Clock Work. 46. Remarkable Formation 
of Ice. 47. Size and shape of the Globules of Blood in dif- 
ferent Animals. 48. Subnitrate of Bismuth used in Inter- 
mittent Fevers. 49. Preservation of Grain in Granaries of 
Cast-Iron. 50. Eruption of Mount Vesuvius. 51. En- 
croachment of the sea on the Coast of America. 52. Memoirs 
of the Physical and Natural History Society of Geneva. 53. 
Translation of Legendre’s Elements of Geometry. 54. 
Mathematical Essays by the late W. Spence, Esq. 55, Me- 
moirs of the Wernerian Natural History Society, 189-19^ 
Art. XXXIV. List of Patents granted in Scotland, from 5th 
February to 13th April 1822, - ^95 
