201 



Mr. Sansom then read a paper on the Arrangement and 

 Classification of the Musci, as recently proposed by Carl. 

 Miiller. 



Dr. Dickinson, while he gave due praise to this botanist 

 for the labour indicated by such a classification, doubted if it 

 would really be serviceable; for any arrangement depending 

 upon cellular structure in the cellular tissue of the leaves 

 was liable to the objection of uncertainty, from the fact that 

 the cellular tissue was very apt to change. 



Ninth Meeting — February 24, 1851. 

 ROBERT McANDREW, Esq., V.P., in the Chair. 



Mr. H. C. PiDGEON, London, and the Rev. Robert 

 BiCKEBSTETH Mayor, M.A., Eellow of St. John's College, 

 Cambridge, Rugby, were elected Corresponding Members. 



The following donation was laid before the Society : — 

 Transactio7is of the Berwickshire Club : from Dr. Johnston. 



Mr. Sansom exhibited a specimen of the Hypnum Kneif- 

 fianum, and read a communication upon the leaves of mosses, 

 showing the analogy between the musci and the ferns in this 

 respect, illustrated by specimens from this country and South 

 America. 



Dr. Dickinson remarked upon the incorrectness of a recent 

 speculation that mosses have not leaves. 



Mr. Henry Behrend then read a paper On the Light 

 Literature of Spain. 



The second paper for the night was — The Flora of Liverpool, 

 by Joseph Dickinson, M.A., M.D., F.L.S. (Tide Appendix.) 



3D 



