^Notes (Did Coiuiiu'iifs. ■ 417 



part at least, at moraines described by H. Carvill Lewis, and 

 thought by him to mark the full limits of the ice sheet. The 

 older drift outside was regarded as a deposit by floating ice. 

 The writer examined these moraines in the district east of 

 the Pennine Hills, both in the Vale of York and at points along 

 the east coast between Whitby and Hull. The studies along 

 the coast were in company with Professor Kendall and Mr. 

 G. W. Lamplugh, who have each contributed important papers 

 on the glacial features. In the district between the Pennine 

 Hills and the mountains of North Wales glaciation extended 

 southward to Shrewsbury and possibly to Wolverhampton. 

 A large part of \\' ales seems also to have had the later glaciation.' 



YORKSHIRE DRIFTS. 



' The drift shows great complexity in exposures along the 

 coast south from Flam borough Head, and between Scar- 

 borough and Flamboroiigh Head, there being at least three 

 distinct boulder clays of unlike rock constituents. There 

 evidently has been an ice movement here from Scandinavia, 

 as well as from the local ice sheets of the British Isles. ?^Ir. 

 Lamplugh, who has studied these exposures more closely than 

 anyone else, and who began the study with the idea that the 

 several drifts mark deposits of different stages of glaciation, 

 has reached the conclusion that they are all the deposits of one 

 glacial stage though from separate glacial centres. At least 

 he has found no decisive evidence of any great difference in 

 age or of any wide gaps between the drifts.' 



ASPECT OF THE DRIFTS. 



' The aspect of all the drifts impressed the present writer 

 as rather fresh, and differing no more perhaps than the upper 

 drift and the middle drift of Germany. The aspect is much 

 fresher than in the old drift on the Norfolk coast. The 

 moraines are the product of an ice movement from the British 

 contres, for they overlie the Scandinavian deposits. They 

 present gentle swells and sags of a subdued type, similar to 

 those of the outer moraines on the Wisconsin glaciation in 

 America. The weathering and leaching is but little more than 

 a metre in depth, and the weathered part is much lighter brown 

 colour than in the old drift on the Norfolk coast.' 



MORAINES. 



' The moraines just discussed seem more likely to correlate 

 with the upper drift than with the loss-covered middle drift of 



igio Dec. i. 



