18C8.J Geological features of Blwotan Dooars. 123 



the whole base of the Himalayas, often to a height of nearly 3,000 

 feet above the sea, has hove been exerted in a less degree, and that 

 they are to be sought for yet below the upper conglomerates more or 

 less deeply seated at a short distance from the base of the hills, as I 

 have shewn by the dotted line in map (Plate V). Should further 

 exploration shew more clearly how these sandstones near the Teesta 

 disappear eastwards, how they commence again near and to the west 

 of Buxa, and that they lie deeply seated in the intervening space, 

 it will not a little form a connecting link geologically, though not 

 orographically, with the hill mass south of the Brahmaputra ; it is 

 curious to find the last low eminences of gneiss in the Assam valley, 

 viz. at Dhoobrie and Mateabug as noticed by Mr. Medlicott, to be 

 upon a line in the direction of this great gneiss mass of the Uinialayabs 

 at Gyepmochi, the area so devoid of the tertiary deposits lying 

 between them. 



Oct. 1866. 



