314 Proceedings of the British Association for 1850. 



of the coal-beds ; the largest fault is one of twenty-five fa- 

 thoms, running north-west and south-east. 



Mr Landell was of opinion that this coal-field was con- 

 nected with the Ayrshire coal-field and not separated by old 

 red sandstone as described ; throughout the Scotch coal-fields 

 the carboniferous limestone was split up into a number of 

 beds and intercalated with the coal. — Mr Bryce, in reply to 

 a question, stated that he considered all the Scotch coal- 

 fields had once been continuous, but had become more or 

 less separated by the outburst of the trap, and in this one 

 instance by an upheaval of the old red sandstone. — Mr Hugh 

 Miller said there were beds of red sandstone with coal fossils 

 overlying the coal, and that it was extremely difficult to 

 determine the exact line of junction of the two systems, but 

 such a line did exist, and he believed Agassiz was right in 

 asserting that no species offish was common to the old red and 

 carboniferous series. — Professor Nicol stated that Mr Bryce's 

 sections were exceedingly like Mr Milne's Berwickshire sec- 

 tions ; he thought that all the red sandstone on the north 

 flank of the Lammermuir hills might with more propriety 

 be referred to the carboniferous series. — Dr John Fleming 

 described some instances in which there were true old red 

 sandstone, with scales of the Holoptychius, followed by 

 numerous alternations of very thin coal seams with carbo- 

 niferous limestone ; some of the trap rock after its ejection 

 appear to have been arranged by water. 



Section D. — Natukal History, including Physiology. 



President. — Professor GOOBSIR. 

 Vice-Presidents. — Sir J. G. Dalyell, Sir J. Richardson, Dr R. K. Greville, 



Mr G. Bentham. 

 Secretaries. — Dr Lankester, Professor J. H. Bennett, Dr D. Maclagan. 

 Committee. — Professor AUman, Mr C. C. Babington, Professor J. H. Balfour, 

 Dr Black, Mr G. Busk, Dr H. Cleghorn, Rev. Professor Fleming, Mr W. 

 Gourlie, Rev. L. Jenyns, Dr W. H. Lowe, Mr R. M' Andrew, Professor W. 

 Macdonald, Dr M'William, Mr R. Patterson, Rev. J. Reid, Messrs W. 

 Spence and Wyville Thomson, Professor Walker-Arnott, Mr J. Wilson, 

 Dr P. Neill, Professor Parlatore, Professor E. Forbes, Professor W. Car- 



