TOPOGRAPHY AND GEOLOGY. 



Bengal. It contains a confused and broken mountain system, only 

 a Small part Of whirl; i- in din-el eonneetion w itli the central tableland. 



the Mahanadi v., , t "he Ka^tern 



Ghats. The large rivers ,,f the liurubulang, Baitarni, Brahmini and 

 Mahanadi flow largely through country whieh is heaut ifull v dnersitied 

 with hills and mountains still more or less eovered w it Ii forest. The 

 ? of the Kolhan in Singbhum 



as assisted Nature in resist i 



nd Central tracts the destructive influei 



less parallel to 



alley of the Mahanadi. hut even this belt is not homogeneous. On 

 le eoast itself there are stretches of sand and sand-hills alternating 



by the outlying hills of XiLdri .-nd .Mavurbhanj and a 



ith by isolated rocky hills and tracts of scrub on a lat 



On the extreme 'south the boundary hills between 



.nd Madras meet the Chilka Lake, a large area of sha 



between the highlv in. tamorphosed roeks and schistose forms 

 Archaean gneiss, (lenerallv speaking this last is far less in ev 

 in the Southern tract than in the Central. From a forest and bol 

 point of view the matter is not of much importance, as the soils \ 

 and the lloristie formations are identical. 



ISO. As Dharwar rocks are said to be absent from the hilly 

 of Orissa between the Godavari 

 gneisses of the hills in the Mais 

 Bengal or Nilghiri gneiss. On t 



