232 ON SOME TIN-DEPOSITS OF THE MALAYAN PENINSULA. 
production of the other states of the peninsula and islands of the 
archipelago. 
Discussron. 
Mr. W. W. Suyru remarked that the details given in the paper 
corresponded closely with those of stream-works in other localities. 
Information on such subjects was important to capitalists. Large 
areas of alluvial deposits appeared to be rich in tin-ore in many places 
on the east side of the Bay of Bengal. So far as he knew, this was 
the first description of the region of Perak, and he trusted we 
should have more. He called attention to the association here, as 
in Queensland and elsewhere, of tin with granite. Mynheer yan 
Groot had informed him that in the islands of Bellaton and Banka 
the tin was associated with slaty rocks curiously like those of 
Cornwall and Devon, probably, though on slight fossil evidence, of 
Devonian age. 
Mr. J. H. Cottins remarked that the similarity mentioned by Mr. 
W. W. Smyth extends to the associated minerals also; for wolfram 
and gilbertite were abundant in the specimens on the table, as in 
the stanniferous granites of Cornwall. 
