GEOLOGY. 



strata, between it and the granite. On the Sal wen it contains 

 Jead ore, like the metalliferous limestone of England and 

 America, and it is not wholly destitute of fossils, although 

 they are verv rare. Captain Tremenheere found a species of 

 Terebratulain the Tavoy limestone, which is characteristic 

 of the English mountain limestone ; and it may therefore be 

 regarded as identical with the carboniferous limestone of the 

 coal formation. 



MILLSTONE GRIT. 



Beds of conglomerate or breccia appear above the lime- 

 stone in Tavoy province, where they occupy the place of the 

 millstone grit in England. They appear, however, to belong to 

 a more recent formation above the coal measures. 



1ERTIARY. 



The Tertiary formation is fully developed in the valley of 

 the Tenasserim. There are found beds of pebbles and sand 

 partialy consolidated; plastic clay containing lignite; soft 

 shales, with impressions of recent plants; and in some places, 

 calcareous srrit and gypsum, with conglomerates composed of 

 enormous masses from the adjoining rocks. 



Whether some of these belong to the tertiary or the new red 

 sandstone formation may admit of doubt. Such products are 

 found in both, and until they are ascertained to contain organic 

 remains decisive of the latter, to separate them from the former 

 is to make an arbitrary and unnecessary division. 



» A red sandstone from the neighbourhood of Pagan is im- 

 ported into the provinces, for the use of Burmese women, 

 to srind up their odoriferous woods upon, of which Dr. Buck- 

 land says : " It may with more probability be referred to the 

 new red sandstone than to any other formation.' 5 The stone 

 umbrella of the image at Amherst point affords a specimen of 

 this rock. 



ccn:>S§?coqpo5.i — Toung-oo-kyouk. 



DILUVIUM. 



The richest tin locality in the. province of Tavoy is at the 

 base of the eastern mountains, where the vallies are covered 

 with a thick bed of diluvial pebbles and boulders, eight or 

 ten feet thick, below which no tin is found. 



