DUDLEY AND MIDLAND GEOLOGICAL SOCIETY, 



123 



marlsj with gypseous beds, and non-fossiliferons, difFeriiig 

 from any member of the British group. The thickness is 

 from eight hundred, to one thousand feet. 



3. -— The Niagara group, consisting of limestone, and shells, 

 both containing fossils identical with those of the Wenlock 

 series. 



4. — The protean group, which crops out at the base of 

 the falls, and composed of hard limestones, with Graptolites^ 

 Pentamerus oblongus, P. 1(BVis. 



5. — The Ontario group, rises from beneath the Protean, 

 about a mile below the falls, and is from two hundred to 

 three hundred and fifty feet in thickness. The two latter 

 groups Mr. Lyell considers to correspond with the lower 

 Silurian rocks of great Britain. Mr. Lyell then enters upon 

 the consideration of the various circumstances with respect 

 to the position of these rocks, and the probable changes in 

 the course of the river, and consequently of the falls. 



February 2^rd. — R. J. Murchison, Esq., President, in 

 the chair; a paper ivas read by Professor Oiven, on the 

 mammalian remains exhibiting at the Egyptian Hall, 



We have elsewhere reported the conclusion at which Prof. 

 Owen arrived in this paper, which contained an account of 

 the most remarkable of the specimens in Mr. A. Koch's 

 collection; from which he deduced his arguments, and 

 which he substantiated, by reference to other recent and 

 extinct animals. We will only recapitulate that Prof. 

 Owen is of opinion, that with the exception of a few bones 

 of the Mammoth, all the remains in Mr. Koch's collection 

 may be referred to the Mastodon giganteum of Cuvier. 



DUDLEY AND MIDLAND GEOLOGICAL SOCIETY. 



Wolverhampton. — The first meeting of this branch Society, 

 was held in February 11th. last, at the Assembly rooms, 

 and was most numerously attended. Henry Hill, Esq., 

 President, in the chair. 



