iv ' CONTENTS. 
Art. XXXIII. Scientific Intelligence, - - ICS 
I. NATURAL PHILOSOPHY. 
Astronomy. 3. Burg’s Observations on the Solar Eclipse of 
the 7th September 1820. 2. Astronomical Journal. 3. As- 
tromical Observations at Bushey Heath, Stanmore, 174, 175 
Meteorology. 4. Remarkable Aurora seen at Belleville, In- 
verness-shire, in a Thunder-Storm. 5. Dr Wollaston the 
Inventor of the Aithrioscope, - , 175-177 
Optics. 6. Remarkable Dichroism of Tourmaline, - 177 
Magnetism. 7* On the best kind of Steel and Form fbr a 
Compass-Needle. 8. Effects of Magnetism on Chrono- 
meters, - - - 177, 178 
Electro-Magnetism. 9. New Electro-Magnetic Apparatus, 378 
II. chemistry. I 
10. Improvement on Wedgwood’s Pyrometer. 11. Sponta- 
neous Explosion of Chlorine and Hydrogen. 12. Heat 
produced in the Skin by Chlorine. 13. Tests for Arse- 
nic. 14. Camphor. 15. Chemical examination of a Li- 
quid from the Crater of Vesuvius, - 179-182 
HI. natural history. 
Mineralogy. I6. Sulphato-tri-carbonate of Lead, 17- Gale- 
sinter determined to be true Calcareous -spar. 18. New 
Mineral from Aachen in Altenberg, - 183, 184 
Zoology. 19. On the Spurs of the Ornithorynchus. 20. Hors- 
field’s Zoological Researches. 21. Natural History of the 
Crinoidea, or Lily-shaped Animals, by J. S. Miller, 
A. L. S. 22. Latreille’s great ^ Work on the European 
Colepterous Insects. 23, Sea-Snake of the Aleutians, 
Norwegians, and Hebridians, - - 184-189 
Botany. 24. Red Snow in New South Shetland. 25. Tri- 
toma media, ^ - 189 
IV, general science. 
26. Methods of Kindling Fire on the Sandwich Islands. 
27* Earthquake at Inverary. 28. Method of Illuminating 
the Dials of Public Clocks with Gas. 29* Lithographic 
Paper. 30. Manufacture of Glassw 31. Dark-brown Streak 
‘ on the Sea occasioned by Crabs. 32. Height of the Moun- 
tains in Owhyhee and Mowee. S3. Instinct of the Ho- 
ney-Eater Bird. 34. String Alphabet for the Use of the 
Blind. 35. Luminosity of the Sea, - 190-196 
Art. XXXIV. List of Patents granted in Scotland since 1st 
September 1821, - - 196 
