Geology and Geography. ' 379 



mits oi their inquiries, mid that while the symmetrical system of 

 division common in primary rocks of all kinds, was the most 

 attended to by one class of observers, and traces of stratification 

 were regarded by others, results apparently conflicting were 

 drawn from the examination of the same country. It was import- 

 ant to attend to the real distinctions between the two systems of 

 structure, because each was due to a proper cause ; but it was abso- 

 lutely essential to the production of a right general conclusion, that 

 partial truths thus disclosed should be contemplated together. • / 



Mr Yates noticed some localities in Cornwall, where the sepa- 

 ration of the schistose rocks and granites is very marked. 



Dr Buckland expressed his acquiescence in the views of Pro- 

 fessor Sedgwick and Professor Phillips, and referred the Section 

 for a fuller account of his opinions on the subject to his work now 

 in the press. 



Dr Boase shortly replied, and referred to his recently published 

 treatise on Primary Geology for a more extended account of his 

 views. :ri miJ til »t;.»{3 n 



A portion of Dr Rogers' Report on the Geology of North 

 America was then read, and a general account of the contents of 

 the remainder given by Professor Phillips. Illustrative maps were 

 exhibited. 



Lord Greenock presented for distribution copies of a view of 

 the Castle Hill section. 



Section D. — Natural History. 



Chairman — Professor Graham. 



Deputy- Chairman — Sir William Jardine, Bart. 



Secretaries — Williaisi Yarrell, Esq. Professor Burnett, 



.. Committee — G. A. Walker- Arnott, Elsq. Monsieur Agassiz. 



Dr Adam. C. Babington, Esq. Robert Brown, Esq. D. C. L. 



W. Christie, Esq. Dr Coldstream. Allan Cunningham, Esq. J. 



Curtis, Esq. David Don, Esq. J. P. Duncan, Esq. Dr R. Dick-^ 



son. Dr Daubeny. Rev. L. W. P. Garnons. Dr Greville. B. 



D. Greene, Esq. Boston, U. S. Professor Hcnslow. Dr Hooker, 



Professor Jameson. Rev. L. Jenyns. Dr Richardson. J. F. 



Royle, Esq. P. J. Selby, Esq. F. R. S. E. Colonel Sykes. W. 



Spence, Esq. Richard Taylor, Esq. Dr Wasse. James Wilson. 



Esq. William Thompson, E^q. 



A report on the recent and present state of Zoology, by the Rev. 

 Leonhard .Jenyns. 



