2 PROFESSOR P. F. KENDALL AND MR E. B. BAILEY 



Survey staff who have mapped or revised the drift of this area. Foremost among these 

 is Dr Peach, whose earliest experience of survey work was gained in East Lothian under 

 Dr Young. He probably was the first to realise that the Lammermuirs had been 

 completely overwhelmed by land ice, and as he worked for several years, at a later date, 

 in the area lying south of the watershed, he was able to establish the point beyond any 

 doubt. His experience in this. and other matters has always been at our disposal. The 

 same may be said of Messrs Clough, Hinxman, Muff, and Crampton, who have been 

 engaged in the revision of the area for the Geological Survey, and in close connection 

 with whom one of ourselves has been acting. We would further observe that Mr 

 Barrow has simultaneously been employed in investigating the allied problems of the 

 Garleton Hills, which are situated in East Lothian, but which constitute a naturally 



+ 6FtEENLAW 



Fig. 1. 



self-contained area. His description will appear in the new edition of the East Lothian 

 memoir. Our best thanks are also due to Mr Lunn of the Geological Survey, whose 

 excellent photographs supply the illustrations chosen for this paper. And lastly we 

 would like to record our belief that had it not been for the kindly interest and support 

 continually given to our work by Dr Hokne, it is doubtful whether the paper would 

 ever have been written at all. 



The Maximum Glaciation of East Lothian. 



The glacial history of East Lothian is one of considerable complication. Our 

 evidence clearly points to a period of maximum glaciation when the hills were com- 

 pletely overridden by a foreign ice sheet ; then came a time when the latter began to 

 fail in strength and was unable, even with bulging upper surface, to force a passage for 

 itself, but had rather to accept the high plateau region as an independent centre of 



