CONTENTa 
ii 
Art. X. Observations on M. Beudant's Opinions regarding the 
Crystalline Rocks of the Red Sandstone Formation, 
as expressed in the Sd volume of his Voyage en 
Hongrie/’ from p. I94. to p. 206 . By Aime' Boue', 
M. D. Member of the Wernerian Society, &c. 67 
XL Journal of a Tour to the Coast of the Adriatic Sea, 
and to the Mountains of Carniola, Carinthia, Tyrol, 
Saltzburg, and Bohemia. By Dr David Henry 
Hoppe and Dr Henry Hornschuch. (Continued 
from Vol. XI. p. 353.) - - - 82 
XII. Account of Captain Basil Hall's and Mr Henry 
Foster’s Experiments with an Invariable Pendu- 
lum, made near the Equator, and on the Coasts of 
Mexico and Brazil, - _ gj 
XIII. Gleanings of Natural History, during a voyage along 
the Coast of Scotland in 1821. By the Rev. John 
Fleming, D.D. F.R.S.E. M.W.S. &c. (Concluded 
from Vol. IX. p. 254.) - _ _ 
XIV. Observations on Double Stars. By M. Struve of 
Dorpat. (Continued from Vol. IX. p. J41.) 102 
XV. Observations on a new Natural Family of Plants, to 
be called Cobeaceae. By Mr David Don, Assistant- 
Secretary to the Linnean Society, Corresponding 
Member of the Wernerian Natural History Society, 
&c. - - - - 109 
XVI. Observations on the Low Temperature of particular 
Caverns, - - - - 112 
XVII. Tables of the Variation of the Magnetic Needle in 
different parts of the Globe. (Continued from 
Vol. IX. p. 447.) - - - 116 
XVHI. Description of a Monochromatic Lamp for Micro- 
scopical and other purposes. By David Brewster, 
LL.D. F.R.S. Lond. & Sec. R. S. Edin. &c. 120 
XIX. Biographical Notice of Mary Noble of Penrith, Cum- 
berland, who is (1823) in the 107th Year of her 
Age, with some Remarks on Longevity. By Tho- 
mas Barnes, M. D. - - - 125 
XX. Notice respecting some New Electro-Magnetic Phe- 
nomena. By Major-General Baron Van Zuylen 
Van Nyevelt, - - - 130 
XXI. Observations on the Anatomical Structure of the Cas- 
sowary of New Holland (Casuarius Novce Hollan- 
diae, Cuv.) By Robert Knox, M. D. F. R. S. E. 132 
