PROCEEDINaS OF TUE SCIENTIFIC SOCIETIES OP LONDON. 439 



not deny that there was other evidence of denudation of the chalk 

 before the deposition of the Tertiaries upon it. 



April 2(jtJi, 1865. 



The following communications were read : — " 1. " On the 

 Character of the Cephalopodous Fauna of the South Indian Cre- 

 taceous Eocks." By Dr. P. Stoliczka. Communicated by the 

 Assistant- Secretary. — In this paper the author gave a summary of 

 the more important facts brought to light by the examination of the 

 Cretaceous Cephalopoda of Southern India, which was begun by Mr. 

 H. F. Blanford, and continued by himself, giving, first of all, a brief 

 notice of what had been done previously by other observers, and a 

 sketch of Mr. Blanford's subdivision of the strata into the Ootatoor 

 (or Lower), the Trichinopoly (or Middle), and the Arrialoor (or 

 Upper) groups. All the genera characteristic of European Creta- 

 ceous faunae were stated to be well represented, the whole assemblage 

 having a Middle Cretaceous aspect. The number of species of the 

 difi'erent genera occurring in each of the three subdivisions was then 

 given, as also the distribution of the groups of the genus Ammonites, 

 the most striking and abnormal feature being the intimate associa- 

 tion of three species of that genus, belonging to the Triassic group 

 " Glodosi,'' with true Cretaceous fossils. Dr. Stoliczka then dis- 

 cussed the relation of this Indian fauna to those of the European 

 Cretaceous rock, and illustrated his remarks by a table showing the 

 geological range in India and in Europe of the species that are com- 

 mon to both areas. He came to the conclusion that for the present 

 the lowest of Mr. Blandford's subdivisions (the Ootatoor group) may 

 be considered to be of the age of the European Gault, while the upper- 

 most (the Arrialoor group) does not seem to correspond to a higher 

 division than D'Orbigny's Seuouieu. 



2. " On the Growth of the Elos Ferri, or Coralloidal Arragonite." 

 By W. Wallace, Esq. Communicated by W. W. Smyth, Esq., F.E.S., 

 Sec. G.S. — The author first described the physical features of the 

 Meldon Mountains, in Westmoreland, and endeavoured to show that 

 they bore certain relations to the geological structure of the country, 

 and that the number and size of the joints varied with the elevation 

 of the rocks, and their position in relation to the valleys. After the 

 formation of the joints, the minerals occurring in the veins in their 

 neighbourhood were stated to be acted upon by decomposing 



