1^26.] Scientific f^otices — Geology. 151 



The iron is metallic, and perfectly malleable ; although none of 

 the pieces are larger than a pin's head, still they are readily 

 extended by the hammer. The iron in the crust is glazed over, 

 so that the eye does not perceive its metallic character, but the 

 file instantly brightens the innumerable points, which then 

 break through the varnish of the crust, and give it a briUiant 

 metallic lustre at all the points where the file has uncovered the 

 iron. The same is the fact with the Weston stone, and with 

 that of L'Aigle, but not with that of Stannern, in Moravia ; 

 specimens of all of which, and of the meteoric iron of Pallas, of 

 Louisiana, and of Auvergne, are now before me. The aerolites 

 pf Jonzac and of Stannern, as stated by M. Bellevue, are the 

 only ones hitherto discovered that do not contain native iron, 

 and do not affect the magnet ; still their analysis presents a 

 good deal of iron, which is probably in the condition of oxide. 



The iron in the metallic state is very conspicuous in the 

 Weston stone, sometimes in pieces of two inches in length ; and 

 both in this stone and in that of Maryland, it is often brilliant 

 like the fracture of the meteoric iron of Pallas and of Louisiana. 



In the analysis of the Weston stone published in 1808, I did 

 not discover chrome, although it was afterwards announced by 

 Mr. Warden. I have desired Mr. Chilton to reanalyse the Weston 

 stone, and he has nearly completed the labour, the lesult of 

 which may be given hereafter; but he writes that he has not 

 been able to discover any chrome. I am not quite sure that I 

 discover pyrites in the Maryland aerolite, although it is men- 

 tioned by Dr. Carver in his letter. 



Geology. 



6. Geological Survey/ of the Shores of the Severn. 



The Rev. C. P. N. Wilton, FCPS. &c. has lately been 

 engaged in making a geological survey of the shores of the 

 Severn, in that part of its course which passes through the 

 parish of Aure, in Gloucestershire, to an extent of about seven 

 miles. In this examination several interesting discoveries were 

 made, of which detailed accounts will shortly be laid before the 

 public. 



In one place, a stratum was found of a sort of carbonized 

 wood, much resembling Bovey coal, in which occurred, disse- 

 minated in small pieces, a white substance not hitherto met with 

 in that matrix, and which, upon examination by Mr. Brand, was 

 found to be sulphate of barytes. 



A fossil species of alcyonium was met with in blue lias — a 

 circumstance regarded as extremely curious, when mentioned to 

 that zealous naturalist Mr. Miller, of Bristol. (Author of the 

 Nat. Hist, of the Crinoidea, &c.) With this were found immense 

 specimens of cornu ammonis, &c. 



Near the same spot a great number of bones were met with in 



