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Vol. 69.] OF THE MALAY PENINSULA. 371 



dolomitic limestones that occupy so wide an area in the Shaii 

 States of Burma. In the Shan States the sequence of fossiliferous y 

 rocks is much more complete than in the Malay Peninsula, extend- 

 ing from Lower Ordovician to Jurassic. To the Silurian succeeds 

 a great thickness of limestones, the lower portion of which is 

 of undoubtedly Devonian age, while the upper contains a well- 

 developed Middle Productus fauna. These limestones are known 

 to extend as far southwards as Tenasserim, where Carboniferous 

 fossils were found in them by the late Dr. T. Oldham and Mr. P. N. 

 Bose. The Baub Series, therefore, probably represents the. upper 

 part of the Shan States limestones, and points to a transgression of 

 the Carboniferous sea southwards, followed by an eastward retreat 

 of the coast of Gondwanaland. Only one other formation is common 

 to the two areas, the Phytic or iSTapeng Beds. In the north there 

 is no trace of the glacial beds described by the Author. 



"With regard to the correlation of these rocks, attention may be 

 called to the fact that the beds containing a Glossopteris fauna, 

 discovered by Dr. Ncetling in Kashmir, have been shown by 

 Mr. Middlemiss to occur beneath a Permo-Carboniferous Series. 

 If, therefore, the Baub Series, even in part, corresponds to any 

 portion of the Permo-Carboniferous Series, it is difficult to under- 

 stand how the glacial deposits lying above the Glossojptens Beds 

 could be the equivalents of the Talchirs of India, which are still 

 older than the Glossopteris Beds. The occurrence of Podozamites, an 

 Upper Gondwana form, also points in the same direction. Accepting 

 the glacial origin of the deposits, therefore, it would appear that 

 they belong, to a later period of glaciation than that represented 

 by the Talchir Beds, and do not affect any of the theories that 

 have been put forward to account for that period. 



The Author, in reply, thanked the Fellows for the reception 

 accorded to his paper. Mr. Oldham's recognition of the similarity 

 presented by the Malayan glacial deposits with those in India, 

 Africa, and Australia was very welcome, as the Author for some 

 time had nurtured misgivings on this point. He thought it possible, 

 of course, that all these phenomena which had been ascribed to 

 glacial action might really be due to some unknown agency : but 

 he accepted provisionally the simplest solution, until that agency 

 was discovered. 



He agreed with Mr. B. B. Newton that there was great need of 

 more palseontological work in the peninsula ; such work might in 

 time clear up the difficulties which Mr. La Touche had raised, and 

 possibly prove the connexion which that speaker had suggested. 



