Page On the Crystalline Forms of Artificial Salts. By H. J. Brooke, Esq. FRS.....

449 Astronomical Observations. By Col. Beausoy, FRS.

452 Analytical Account of Prof. Barlow's Essay on Magnetic Attractions, &c. 453 Proceedings of the Royal Society, April 17, 24, May 1, 8, and 15...... 461 Linnean Society, April 1, 15, and May 6.

469 Geological Society, May 2, and 16.

469 Action of Phosphorus and Water.

470 Phosphate of Uranium. ..

470 On the Question as to the Existence of Metallic Veins in the Transition Limestone of Plymouth,

471 New Scientific Books ..

471 New Patents..

472 Mr. Howard's Meteorological Journal for April.

473 Index

475

..

PLATES IN VOL. V. (New Series.)

Plates.

Page XIX.-Geological Map of the principal European Mountain Chains.... 1 XX.-Electromagnetic Apparatus

436 On Magnetic Attractions.

455

ERRATA TO VOL. V.

Ο Ο Ο Ο Ο

Page 87, line 11, for M. Von Mons, read M. Van Mons.

91, line 15, for decompose, read precipitate. 54, line 6, from bottom, for T7056000, read to a 66000 128, line 5, from bottom, for Coldle, rcad Cottle. 130, in fig. 2, for 7, read 64. 131, line 6, for as 13 to 15, read as 13 to 5. 233, line 17, and p. 235, line 14,. for M. Encker, read M. Encke. 305, line 16, for the manner in which the chlorine lies in the water is evinced by,

read is evinced by the manner in which the chlorine lies in the water. 306, line 22, for Asalaphus, read Ascalaphus.

linc 29, for Taile, read Tailed.
line 30, for Fuverca agavephylla, read Furcræa agavephylla.
line 32, for M. Felix de Avelear Protero, read M. Felix de Avellar Protero.

а

Memoir illustrative of a general Geological Map of the principal
Mountain Chains of Europe. By the Rev. W. D. Conybeare,
FRS. &c. (With a Plate.*)

(To the Editor of the Annals of Philosophy.)
SIR,
So rapid has been the progress of geological science within
the last ten years (since its cultivators, abandoning the idle endea-
vour to construct theories without data, have confined them-
selves to the only true path of philosophy, that of inductive
observation), that while at the beginning of this period, amidst
volumes of speculation, no accurate description of a single coun-
try could be found, a physical map of the entire extent of
Europe may now

be confidently anticipated at no distant day. The labours of Buckland, Ebel, Freisleben, Raumer, and more especially the highly important work of Beudant+ on Hungary, and the memoir of Mr. Strangways on Russia, have already accumulated a vast store of valuable materials, to which a few months will probably add a geological map of France by Omalius d'Halloy, and of Germany by von Buch ;£ together, as it is

* The map is partly copied from one in Ebel's Bau die Erde. + This is at present known in this country only by a few unconnected extracts ; » ful analysis ought to be given in some of our scientific journals. I have no hesitation januaronouncing it the most important geological work which continental science has yet

1. While this memoir was passing through the press, I have received the four first numbers of a very able geological work now publishing periodically in Germany by

produced

New Series, vol. V.

B