THE 



QUARTERLY JOURNAL 



ov 



THE GEOLOGICAL SOCIETY OF LONDON. 



PROCEEDINGS 



OF 



THE GEOLOGICAL SOCIETY. 



NOTEMBER llth, 1868. 



William Augustus Edmond Usher, Esq., Geological Survey of 

 Great Britain ; Rev. Robert Dixon, M.A., Nottingham ; William 

 Woodman, Esq., The Deanery, Great Malvern; and F. R. Mallet, 

 Esq., Geological Survey of India, were elected EeUows. 



The following communications were read : — 



1. Wote comparing the Geological Structuee of North-western 

 Siberia with that of Russia in Europe. By Sir Roderick I. Mur- 

 CHisoN, Bart., K.C.B., G.C.St.S., E.R.S., Y.P.G.S., &c. 



My old associate. Count A. von Keyserling, who, with M. de Yer- 

 neuil, cooperated with me in producing the work entitled ' Russia 

 and the Ural Mountains/ has recently acquainted me with some 

 phenomena relating to countries beyond the limits of our researches, 

 which are, it seems to me, of sufficient importance to be laid before 

 the Geological Society. 



In the expedition undertaken by M. Lahost, to discover the 

 remains of Mammoths in situ and other objects on the banks of the 

 Lena, it was clearly ascertained that, besides those comparatively 

 modern deposits in which bones of these animals are found, a vast 

 tract of country lying between the rivers Lena and Jenissei is occu- 

 pied by Upper Silurian rocks, which, judging from their organic 

 remains, are of the same type as those collected by Keyserling on 

 the river Yachkina, in the region of the Petchora, and described by 

 him in our joint work. 



Among the formations younger than the Silurian are Carbonife- 

 rous rocks, some of which contain beds of coal several fathoms thick, 

 whilst cupriferous schists and graphite also occur. 



VOL. XXV. PART I. B 



