PROCEEDINGS 



OF 



THE GEOLOGICAL SOCIETY OF LONDON. 



1829. No. 11. 



March 6. — S. P. Pratt, Esq., of Lansdown Place West, Bath 5 and 

 the Rev. Robert Everest, M.A., of Devereux-Court, Temple, were 

 elected Fellows of this Society. 



An account of a remarkable fossil-plant in the coal-formation of 

 Yorkshire ; by John Lindley, Esq., F.G.S., F.R.S., &c, and Professor 

 of Botany in the University of London, was read. 



This plant was described as a fern, resembling, in most respects, the 

 Trichomanes reniforme, a recent species found in New Zealand, but 

 differing in the nature of its venation. It was said to exhibit distinct 

 and unequivocal traces of the marginal fructification peculiar to the 

 genus Trichomanes. After comparing it with the fossils comprehended 

 by M. Adolphe Brongniart in his genus Cyclopteris, and showing 

 that it was not referable to any known species of that group, the au- 

 thor concluded by assigning to it a specific character, and the name 

 of Trichomanes rotundatum. 



The reading of a paper " On the remains of Quadrupeds which 

 have been discovered in the Marine and Freshwater Formations of the 

 Peninsula of Italy ;" by J. B. Pentland, Esq., was begun. 



March 20 th.— R.W. Blencowe, Esq. , M.A., of 1 0, Gloucester- Place j 

 R. Otway Cave, Esq., M.P., of 30, Upper Grosvenor-street ; Captain 

 Samuel Edward Cook, R.N., of Newton, Northumberland ; Robert 

 Daubeny, Esq., of Cork-street ; George Lowe, Esq., of Highgate; and 

 J. P. Fearon, Esq., of 1, Crown-Office-Row, Temple, — were elected 

 Fellows of this Society. 



A paper was read, "On the Tertiary and Secondary Rocks forming 

 the Southern Flank of the Tyrolese Alps, near Bassano;" by Rode- 

 rick Impey Murchison, Esq., Sec. G.S., F.R.S., &c. 



The tertiary, or sub-alpine rocks which fringe the southern extre- 

 mity of the Tyrolese Alps, between the rivers Brenta and Piave, may 

 be said to divide themselves into two great natural groups of very 

 different ages. 



1st. — An outer, or younger zone composed of conglomerates with 

 subordinate beds of yellow sand and blue marl containing shells, 

 which, from a limited number collected by the author, seem to be 

 identical with those which in other parts of Italy, at Nice, &c. charac- 

 terize the newer tertiary formations (Sub-Apennine). 



2d. — An inferior system of yellow and green calcareous sandstone, 

 blue marl, and compact limestone ; the higher portions of which 

 offer a few shells analogous to those of the Bourdeaux basin 5 while 

 the lowest beds are distinguished by a vast variety of organic remains, 



