370 Geological Society: — 



Leven and East Wemyss. The coal-field of the latter district is the 

 most northerly piece of true Coal-measures in Britain ; they dip 

 10° E., or even less. The highest member (which may possibly 

 be even later than the Carboniferous Period) is an unfossiliferous 

 purplish sandstone, full 200 feet thick ; next comes soft red marl, 

 12 feet, followed by sands (290 feet), marls, clays, &c. (100 feet), and 

 sandstones, clays, &c, with thin coals and limestones (about 80 feet). 

 Other sections were also described. No unconformity has been 

 noticed in Eifeshire between these and the underlying measures. 

 The argillaceous limestones and their coals are fossiliferous ; there 

 are a few fish and Crustacea, and many plants, with some curious 

 markings, which may be rootlets or perhaps alga?. The last occur 

 only in a limited part of the rock, not with other plants, and are 

 very delicate and membranous. The affinities of these were fully 

 discussed, the author inclining to the view that they are alga?. 



February 8. — E. Etheridge, Esq., F.B.S., President, 

 in the Chair. 

 The following communications were read : — 



1, " Description of some Iguanodon Ptemains discovered at Brook, 

 Isle of Wight, indicating a New Species, Iguanodon Seelyi." By 

 J. W. Hulke, Esq., F.R.S. 



2. " On a peculiar Bed of Angular Drift on the high Lower- 

 Chalk Plain between Didcot and Chilton."' Bv Prof. J. Prestwich, 

 M.A., F.R.S., F.G.S. 



February 22.— J. W. Hulke, Esq., F.R.S., President, 



in the Chair. 



The following communications were read : — 



1. "Additional Discoveries of High-level Marine Drifts in North 

 Wales, with Eemarks on Driftless Areas." By D. Mackintosh, Esq.. 

 F.G.S. 



The author begins Avith remarks on the importance of the marine 

 drift-area (part of which he briefly described in his last paper), 

 especially as regards its great extent, and the absence, so far as yet 

 known, of similar high-level drifts (between 1000 and 1350 feet 

 above the sea) in continental Europe, Asia, or North America. He 

 lately traced the drift-area two miles further south than he had 

 done during former explorations, its entire length being little short 

 of 5 miles. In this paper he gives a detailed description of the 

 numerous exposures of rounded gravel and stratified sand between 

 the north end of Minora Mountain and Llangollen Yale, which in 

 some places spread out into large flat expanses, but more frequently 

 assiime the form of knolls (frequently in perched positions), which 

 rise up from beneath a covering of clay or peat. He dwells on the 

 probable origin of the knoll-shaped configuration, including the 

 theory of the precipitation of the drift from the stranding of floating 

 ice, and the forcing-up of previously deposited drift by the same 

 agency, but inclines to the idea of the knolls having been chiefly 



