TRANSACTIONS. 



I. — The Glaciation of East Lothian South of the G-arleton Hills. # By Professor 

 P. F. Kendall and Mr E. B. Bailey, B. A., of H.M. Geological Survey. Communicated 

 by Dr John Horne, F.R.S. (With Four Plates, Map, and Seven Text Figures.) 



(Read May 20, 1907. MS. received August 23, 1907. Issued separately January 10, 1908.) 



The glaciation of East Lothian has already been dealt with separately by Professor 

 John Young, who, when attached to the Geological Survey, treated this subject in the 

 memoir of the district published in 1866. His account of the phenomena, striae, 

 boulder clay, dry valleys, etc., is concise and clear, but he does not enter deeply into a 

 discussion of causes. A guarded reference to submersion to account for the presence of 

 an erratic boulder of carboniferous sandstone at a height of 1500 feet above sea-level 

 shows in fact that he had not arrived at a full conception of the possibilities involved in 

 glaciation by land ice. He was, however, quite definite in ascribing many important 

 erosion effects in the district to the work of an " ice-stream." In this as in most other 

 points he had been forstalled by Sir Archibald GEiKiE,t who had already described the 

 immediately adjoining area to the south. 



Since Dr Young's time no one has made a special study of the district. In common 

 with the rest of Scotland, our knowledge has of course advanced with increased experience 

 won in more extended fields. The writings especially of Sir Archibald and Professor 

 James Geikie have fully shown the connection of the local phenomena of the county 

 with the wider problems involved in the glaciation of the country considered as a whole. 

 With regard to the results produced by the flow of land ice across the district we find 

 but little that is new to add. 



It is different, however, in respect to the phenomena of the retreat of the ice sheet. 

 These have never been referred to in other than indefinite terms so far as this particular 

 region is concerned. The special feature of our communication is therefore the treatment 

 of this part of the subject.]: As the historical development of research in this direction 

 has, however, been recently discussed in some detail, § we have not thought it necessary 

 to re- state it here. 



We must further express our indebtedness to various members of the Geological 



* Published, so far as Mr Bailey's observations are concerned, by permission of the Director of H.M. Geological 

 Survey. 



t Geology of East Berwickshire, 1863. 



% J. Geikie has already given illustrations of the main phenomena which accompany the retreat of an ice- 

 sheet from a hilly country. Great Ice Age, 1894, ch. xiv. 



§ P. F. Kendall, A.G.J.S., 1902, p. 471, "A System of Glacier Lakes in the Cleveland Hills." 



TRANS. ROY. SOC. EDIN., VOL. XLVI. PART I. (NO. 1). 1 



