Johns : Geology at the British Association. 359 



zones of the same rocks, by two lady students. Dr. Bonney, 

 having now arrived, took the chair, while Professor Coleman 

 gave a most lucid address on the ' Canadian Shield.' Illustrating 

 his address with lantern slides, he described the Archean Rocks, 

 and insisted that these had been deposited originally as normal 

 sediments and volcanic rocks, and even included an ancient 

 till with scratched boulders, relics of the oldest Ice Age known. 

 Sir Archibald Geikie voiced the opinion of those present when he 

 said he had hardly ever listened to a more luminous address. 

 To complete the morning session, Dr. Falconer read a paper on 

 Northern Nigeria, and Dr. Hatch gave an account of the geology 

 of Natal. 



On Friday, there was a joint meeting with the geographical 

 section. The writer gave an account of the local geology, and 

 Professor McWilham gave a delightful exposition of the relation 

 of the metallurgical industries of the city to the geology of the 

 district ; and in the discussion. Professor Kendall drew timely 

 attention to the vast reserves of unoxidised ores available in 

 the Midlands. Mr. T. Sheppard described ' the Humber during 

 the Human Period ' ; Dr. Tempest Anderson discussed a new 

 volcano in one of the Samoan Islands, and the Rev. E. Spicer, 

 ' The Present Trias Conditions of Australia.' 



The most important feature of Monday's session was the 

 striking description of the recent shelly boulder clay left as 

 a result of the advance and retreat during the last few years of 

 the Sefstron glacier, at a level high above the sea, by 

 Mr. G. W. Lamplugh, who triumphantly asked ' whether any 

 one could deny after this, that glaciers could " nose up " the 

 sea bottom, with its shells, and deposit it at a higher level as 

 boulder clay.' When several speakers had followed with cor- 

 roborative evidence, it became the turn of another well-known 

 land-ice advocate, in the person of Professor Kendall, to 

 express the pain he felt in playing the part of the ' Devil's 

 advocate,' and having to suggest that the deposit described by 

 Mr. Lamplugh was perhaps not true boulder clay at all. 



The very important discussion on the extent of the concealed 

 portion of the great Midland Coalfield was opened by Professor 

 Kendall, who gave a most interesting resume of the evidence on 

 which he based his conclusions, and in the course of his remarks, 

 made the announcement that in the boring, which had been in 

 progress at Scunthorpe for some time, the coal measures had 

 been reached. The only further information he was able to 



1910 Oct. 1. 



