184 PEOCEEDINGS OF THE GEOLOGICAL SOCIETr. 



2. " The Precipitation and Deposition of Sea-borne Sediment." 

 By E. G. Mackley Browne, Esq., F.G.S. 



[Abstract.] 



The Author discusses the mode of deposition of current-borne 

 sediment upon the ocean-floor, and considers the effects of current- 

 action in sifting the material and causing it to accumulate into 

 stratified linear ridges having directions generally parallel with those 

 of the currents — the dip of the strata varying according to the 

 velocity of the currents. He considers that the conclusions deducible 

 from his analysis appear to be in accord with the evidence afforded 

 by the structure of ancient subaqueous sedimentary deposits. 



Discussion. 



Prof. Seelet and Prof. Hull spoke, and the Author replied to 

 their observations. 



April 27th, 1892. 



Prof. J. W. Jtjdd, F.E.S., Vice-President, in the Chair. 



Arthur Prank Bowker, Esq., Hailing Cottage, near Pochester, 

 was elected a Fellow ; and Dr. J. Lehmann, Kiel, and Prof. G. H. 

 Williams, Baltimore, U.S.A., were elected Foreign Correspondents of 

 the Society. 



The List of Donations to the Library was read. 



The Chairman announced that the Organizing Committee of the 

 International Geological Congress have arranged to convene the sixth 

 meeting of the Congress at Ziirich, about the commencement of 

 September 1894. Any communications should for the present be 

 addressed to Prof. E. Renevier, University, Lausanne. 



Prof. W. C. Williamson, F.R.S., exhibited the foUowing spe- 

 cimens : — 



Slab of Carboniferous Limestone from Bolland, illustrating the 

 passage of a foraminiferal ooze into crystalline calcite; 



Asteroj)ecten Orion, Forbes, from the Kellaways Eock, near 

 Pickering, Yorkshire ; 

 and made the following remarks : — 



The specimen before me is a slab of Carboniferous Limestone 

 from the Bolland district of West Yorkshire. In its centre is 

 a magnificent section of a large Nautilus — beautiful as a fossil, but 

 still more important because of what it teaches. Its large terminal 



