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many shells, that have been identified by Mr. Sowerby with those of 

 the London clay. 2nd, a yellow sandy limestone containing shells, 

 and resembling the calcaire grossier, and 3rd, a soft greenish sand- 

 stone resembling the sandy beds of our plaslic clay formation. 



This London clay and calcaire grossier afford an additional locality 

 of these strata to those indicated by the specimens described by Mr. 

 Colebrooke, in vol. i. Part 1, 2nd series of the Geological Transactions, 

 — which had already established the existence of this formation in 

 the N.E. border of Bengal. 



Mr. Crawfurd states distinctly, that it is impossible to refer the si- 

 tuation of the bones, or the origin of the hills containing them, to any 

 operations of the existing river : these hills are sixty feet above the 

 level of its highest flood ; the effect of its actual operations, he ob- 

 serves also, is distinctly visible in the shifting islands of mud and sand 

 that abound along the whole course of the river within this high- 

 flood level, and in the great alluvial delta that extends from a little 

 below Prome to Rangoon and the gulf of Martaban. 



The recent bones and recent wood which he observed to be stranded 

 on some of these islands, were not in a state of progress towards 

 becoming mineralized, but were falling rapidly to decay. 



The existence of so many animal remains analogous to those that 

 occur in the diluvium of Europe, in a matrix which so nearly re- 

 sembles that diluvium, and which so decidedly differs from the allu- 

 vium, and freshwater, and tertiary strata of the adjacent country, 

 seems to authorize us to refer this matrix to a similar diluvial de- 

 posit in the valley of the Irawadi, reposing irregularly upon the ter- 

 tiary and other stratified rocks, that form the basis of that district. 



Besides the tertiary strata above enumerated, there are specimens 

 of grauwacke and transition-limestone from several distant points in 

 the valley of the Irawadi between Prome and Ava, which render it 

 probable that the fundamental rocks of this valley belong to the trans- 

 ition series. 



On the north of Ava there are chains of primitive mountains 

 abounding with statuary marble, associated, as usual, with horn- 

 blende and mica slate. 



We may therefore consider it as now established, on the authority 

 of Mr. Crawfurd's notes and specimens, that the Burmese country 

 not only contains the remains of fossil animals above enumerated, 

 but also affords examples of the following geological formations, 

 which can be identified with those of Europe j namely — 



1. Alluvium. 



2. Diluvium. 



3. Freshwater Marl. 



4. London Clay and Calcaire grossier. 



5. Plastic Clay, with its sands and gravel. 



6. Transition limestone and grauwacke. 



7. Primitive marble and mica slate. 



On the same evening, after the ordinary business of the Society 



