NILGHIRI HILLS. 



223 



able on the steeper hill-sides, and in their protected hollows the 



sholah jungle is very luxuriant. 



A variety of Gneiss, very similar to that last described, but containing 

 more hornblende, forms that portion of the hills to 

 the N. W. of the Pykara Bungalow (Fig. 1), and 



Gneiss of Pykara- 



Fig. I. — Hard bands in gneias, near Neddiwuttara. 



a curious feature of its mode of decomposing is worthy of mention 



as bearing on the structure of the rock. Bands 



Hard bands in Gneiss. „, , , i- ^ , , .,, 



of hard rock are seen protruding from the hill 



sides in broken masses, and always running in the direction of 

 the foliation. The same peculiarity is observable 

 in many parts of the Himagala range (so called 



by Dr. De Benza) which extends from Makurty to Neddiwuttam 

 west of the Pykara River, and it is especially 

 marked around Makurty where the rock is very 



hornblendic. 



Traces of banded structure coincident with the foliation of the rock are 



also observable throughout the central portion 

 Banded structure of . ,^ i i t 



Gneiss around Ootalia- of the hills around Ootakamund. In many 



cases the mmeral variations of the rock appear 



to conform to the strike of its foliation, but it is rarely possible to 



Himagala^range. 



Makurty. 



