Page:Quarterly Journal of the Geological Society of London, vol. 25.djvu/71

 THE QUARTERLY JOURNAL of THE GEOLOGICAL SOCIETY OF LONDON. PROCEEDINGS OF THE GEOLOGICAL SOCIETY.

NOVEMBER 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 Fellows.

The following communications were read:—

1. Note comparing the Geological Structure of North-western Siberia with that of Russia in Europe. By Sir Roderick I. Murchison, Bart., K.C.B., G.C.St.S., F.R.S., V.P.G.S., &c.

My old associate. Count A. von Keyserling, who, with M. de Verneuil, 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 occupied by Upper Silurian rocks, which, judging from their organic remains, are of the same type as those collected by Keyserling on the river Vachkina, in the region of the Petchora, and described by him in our joint work.

Among the formations younger than the Silurian are Carboniferous rocks, some of which contain beds of coal several fathoms thick, whilst cupriferous schists and graphite also occur.

VOL. XXV.—PART I.  B