CONTENTS. 
hi 
Art. XXIV. On the Effects of Temperature on the Intensity 
of Magnetic Forces ; and on the Diurnal Va« 
nation of the Terrestrial Magnetic Intensity. 
By S. H. Christie, Esq. M.A. of the Royal 
Military Academy, - - - 1 40 
XXV. List of Rare Plants which have Flowered in the 
Royal Botanic Garden, Edinburgh, during the 
last three months. Communicated by Pro- 
fessor Graham, - - - 150 
XXVI. Meteorological Observations made at Leith. By 
Messrs Coldstream and Foggo, - 151 
XXVII. Celestial Phenomena from January 1. to April 1. 
1826, calculated for the Meridian of Edin- 
burgh, Mean Time. By Mr George Innes, 156 
$©lar Eclipse of November 29. 1826. (Plate VII.) 158 
XXVIII. Proceedings of the Royal Society of Edinburgh, 163 
XXIX. Proceedings of the Wernerian Nat. Hist. Society, 164 
XXX. Proceedings of the Northern Institution, 165 
XXXI. Scientific Intelligence. 
Astronomy. 1. Comets, - - - - 166 
Acoustics. 2. A Table shewing the Results of Experiments 
on the Velocity of Sound, as observed by different Phi- 
losophers, - - - - - l67 
Geography. 3. Expedition to Explore the Shores of the 
Frozen Sea and the North-east Coast of Siberia. 4. Cap- 
tain Parry’s last Voyage. 5. East Coast of West Green- 
land formerly inhabited by Europeans. 6. Edinburgh 
Geographical and Historical Atlas, - 168, 169 
Chemistry. 7 - Evolution of light during Crystallisation. 8. 
Light emitted during the Friction of Crystals. 9- Ben- 
zoic Acid in Grasses. 10. Formation of Metallic Cop- 
per by Water and Fire. 11. Effect of Position on Crys- 
tallisation. 12. Sulphur in Vegetables. IS. On sup- 
posed Hydrates of Sulphur. 14. View of the Atomic 
System, for the Use of Students, by E. Turner, M. D. 
15. Lithia in Spring Water, - - 169-172 
Meteorology. 16. Meteoric Stone. 17. Falling Stars, 173 
Hydrography. 18. Remarkable Appearance in a Lake, ib. 
Mineralogy. 19. Discovery of Iodine in combination with 
Silver. 20. Platina found in Russia. 21. Graphite. 22. 
Discovery of Two new Minerals. 23. Remarkable Crys- 
tals of Pleonaste, - « 1 73-1 75 
