Marine Deposits on the Margin of Loch Lomond. 75 



augmented attraction, the progress of change downwards 

 must be much more rapid. Consequently, however slowly 

 the tendency to equilibrium may act in an isolated solution, 

 — in the other case, as the progress of exhaustion goes on 

 more rapidly, we may expect that no long period would be 

 required to destroy all perceptible saltness. That this pe- 

 riod has long since passed, in our Scottish lakes, can scarcely 

 be doubted ; but though we be not able to bring up sea-water 

 from the bottom of any of them, yet all are interesting ob- 

 jects of observation. Loch Lomond, in particular, as the ad- 

 ditions it receives are so uniformly distributed over the whole 

 space of its margin, is admirably fitted for experiments on 

 the changes or stability of temperature in deep waters. — 

 Memoirs of the Wernerian Society, vol. iv., p. 334. 



Address delivered at the Anniversary Meeting of the Geologi- 

 cal Society of London, on 20th February 1846. By Leonard 

 Horner, Esq., V.P.R.S., President of the Society.* 



Following the example of my predecessors, I propose to 

 notice, in the first place, in the order of formations, such par- 

 ticulars relating to the sedimentary rocks as have most ar- 

 rested my attention during the last year, contained in the 

 works I have had an opportunity of examining with care. 

 But before proceeding to that systematic review, it may be 

 useful, for the reason I have already assigned, to give an 

 outline of the great features in the geology of Russia in 

 Europe, and the eastern boundary of the Ural Mountains, 

 described by Sir R. Murchison. And although he nowhere 

 speaks in these volumes in the first person, but associates 

 his fellow-travellers with him in all he tells us, if for the 

 sake of brevity I more generally name him when I have occa- 

 sion to refer to the authors, I hope I shall not be considered 

 as detracting in the least degree from the merits of M. de 

 Vemeuil and Count Keyserling. 



Geology of Russia. 

 Russia in Europe is " one huge depository basin,'* encircled 



* Extract from a copy sent to us by the author. 



