38 LAKE : GEOLOGY OF SOUTH MALABAR. 



At Tirivulloy of the Atlas Sheet, about 3 miles west-south-west of 

 Palghdt, bricks are made from the clay of the alluvial flats. 



Alluvial washing for gold has been carried on in many of the 

 rivers, principally at Nilambur and Manarkdd. The gold of Nilam- 

 bur has attracted a great deal of attention, and a short account of it 

 will be found in the Manual of the Geology of India, Vol. Ill, pp. 180, 

 ct scq. There is no doubt that the sands of many of the rivers of 

 South Malabar are highly auriferous, but the source of the gold must 

 be looked for higher up, in the Wynaad, and in the ranges of the 

 Silent and Attap^di Valleys. 



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