AN'NALS 



OF 



PHILOSOPHY. 



JANUARY, 1823. 



Article I. 



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 Beudantf 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 Oma- 

 lius 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 ; a 

 full analysis ought to be given in some of our scientific journals. I have no hesitation 

 in pronouncing it the most important geological work which continental science has yet 

 produced. 



X 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 

 Neto Series, vol. v. b 



