450 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



lock fossils and shells. Hence the Coniston limestone does not re- 

 present the great limestone east of Bala Lake. 



4. The Upper Silurian beds form a very distinct system or 

 group of formations, and the lowest division of the system seems to 

 coincide exactly with the lower Denbigh flags. In all other parts 

 of the upper series there are only analogies of structure, and the 

 groups do not physically represent the groups of the same system 

 in Siluria proper. The upper groups in Westmoreland are more 

 largely developed in North Wales, and contain a fine tilestone, and 

 so far they conform to Mr. Murchison's types. 



5. The list of fossils taken as a whole conforms also very exactly 

 to the Upper Silurian lists of Mr. Murchison, but the distribution 

 of the species is very different, because the physical conditions of 

 the deposit were different. 



Between the distribution of the species in the upper system of 

 Wales and Cumberland there is a close analogy, because the con- 

 ditions of deposit were, especially in the lower part, very analogous. 



6. The fossils of the lower or Protozoic system form but one 

 group, although some species are found in the Coniston and 

 Llansaintffraid bands which do not appear in the lower beds, and 

 vice versa, and the fossils disappear altogether in descending order. 



The author promises to resume the subject, and to give fuller 

 details, and a more copious list of fossils, in a future communication. 



April 2. 1845. 



The following gentlemen were elected Fellows of this Society : — 

 Waller A. Lewis, Esq., B. A., Capt. Washington, R. N., Albe- 

 marle Bettington, Esq., Robert Stephenson, Esq., George Stephen- 

 son, Esq., Lieut. Baird Smith of the Engineers, Capt. Thomas 

 Hutton of the Bengal Army, John M'Clelland, Esq., of the Bengal 

 Medical Service, and the Earl of Auckland. 



The following communications were read : — 



1. On a supposed Aerolite, said to have fallen near Lymington, 



Herts. By R. A. C. Austen, Esq., F.G.S. 



In this communication the author described a fragment of stone 

 supposed to have fallen from the air, and stated the evidence on 

 which the supposed fact of its being an Aerolite was founded. 



2. On the Junction of the Transition and Primary Rochs of 

 Canada and Labrador. By Capt. Bayfield, R.N., F.G.S. 



The country to the northward of Lakes Superior and Huron, and 

 of the St. Lawrence River and Gulf, is for the most part a wilder- 



