1821.] Mr. Weaver on Floetz Formations. 415 



ample space than the limits of this paper admit. I shall merely 

 observe in reference to that series, that, with the exception of 

 the newest floetz trap formation of Werner, the chief merit in 

 unfolding its relations rests in France with Baron Cuvier and 

 M. Brongniart, and in England with Mr. Webster and Professor 

 Buckland. 



In conclusion, I must add, that the principal object of the 

 foregoing pages has been to remove misconception, to reconcile 

 seeming discrepancies, and to simplify general views. How far 

 that task has been accomplished, the geological inquirer will 

 determine. He will also not fail to remark, that in the view 

 which I have taken, the correspondence between the British and 

 Continental formations, in their principal characters and in their 

 general order of succession, is no less striking, than it is consist- 

 ent in the main with the great outlines of Werner's arrangement 

 —a coincidence so remarkable, as to warrant the inference that 

 the general view entertained by that naturalist of the mineral 

 structure of the globe was founded upon solid considerations. 

 The evidence too leading to that conclusion is so much the 

 more impartial, as the exemplifications of the chief positions 

 are in a great measure drawn from the Geological Map of 

 England and Wales ; a work, avowedly constructed by its author 

 with the intention of simply expressing facts, independent of all 

 theory or system. 



Article III. 



On Crystallized Magnesian Carbonate of Lime from Alston 

 Moor, in Cumberland, crystallized Plumbago, and some other 

 Minerals from the Mines of Cumberland. By Edward Daniel 

 Clarke, LLD. Professor of Mineralogy in the University of 

 Cambridge, Member of the Royal Academy of Sciences at 

 Berlin, &c. 



(To the Editor of the Annals of Philosophy.) 



DEAR SIR, Camlridgc, Nov. 1, 1821. 



There is great pleasure in being able, through the medium 

 of your Annals, to establish an intercourse with mineralogists, 

 however widely dispersed, and by communicating to them, from 

 time to time, such facts as appear to be worthy of their notice, 

 to invite them to that commerce of intelligence which is of the 

 highest advantage in carrying on their favourite studies. The 

 article which I sent to you upon arragonite gave rise to some 



