CONTENTS 
OF 
No. XVIII. 
Page 
Art. I. Biographical Notice of M. Le Chevalier Belambre, 
Perpetual Secretary for the Mathematical Sciences in 
the Institute of France, - - 209 
II. Observations on Changeable Stars, and Stars of diffe- 
rent Colours, - - - 219 
III. Account of the Caves at Kirby Moorside, and the open 
fissure in Buncombe Park, with notices of the other 
Caves in England, » - 221 
IV. Account of a Map drawn by a native of Dawse or Ta- 
vay. By Francis Hamilton, M.D. F. R.S. & F.A.S. 
Lond. & Edin. With a Plate, - - 228 
V. On the Knight’s Moves over the Chess-board, 236 
VI. Remarks on the Phenomena of the Fall of the Leaf, 
and the Physiology of the painted Corolla of the 
Flower. By John Murray, F. L. S. M. W. S. &c. 237 
VII. Notice in regard to the Temperature of Mines. By 
Mathew Miller, Esq. 51st Light Infantry, M. W. S. 242 
VIII. Tables of the Variation of the Magnetic Needle in dif- 
ferent parts of the Globe, - t 243 
IX. Gleanings of Natural History, gathered on the Coast 
of Scotland during a voyage in 1821. By the Rev. 
John Fleming, D.D. F.R.S.E. M.W.S. &c. 248 
X. Observations on the formation of Mists, and the depo- 
sition of Dew. By George Harvey, Esq. M. G. S. 255 
XI. Description of Five New Genera of Plants, belonging 
to the Natural Order Bignoniaceae. By Mr David 
Don, Librarian to the Linnean Society, &c. 259 
XII. On the Existence of a group of Moveable Crystals of 
Carbonate of Lime in a Fluid Cavity of Quartz. By 
David Brewster, LL.D. F.R.S. Lond. & Sec. R.S. 
Edin. See. See. - 268 
