Chap. IV. 1.] metamorphic rocks. 71 



mineralogically remarkaLle because of the presence of specks of a 

 gold-coloured mineral (Bronzite ?) very like hornblende in appearance and 

 lustre, and causing the rock to assume a very brown appearance on 

 weathering. West of the village no traces of the iron bed were met with, 

 and it is most probable that the bed dies out or loses its magnetic iron, 

 and with it its individual and recognizable character. The four beds 

 just described (Nos. 1 , 8, 9, and 10) aj^pear to be the remains of a great 

 anticlinal fold, the crest of which has been denuded away ; and this 

 fold was also no doubt one of the great series of folds into which the 

 whole series of rocks of the metamorphic regions seems to have been 

 contorted. 



11. At the extreme south-east corner of the Kalroyenmullay is a 

 good sized and rather rich bed of iron ore on the lower part of the slopes 

 south-east of Chinna Tripeddy pagoda. This bed, which supplies ore for 

 a few furnaces at Devenoor (Deolnur of Map) may reasonably be re- 

 garded as belonging to the above series, and as forming a synclinal axis 

 with the Pookanum bed (No. 9), although the north-east extension of the 

 bed is soon lost sight of xmder soil after leaving the foot of the slopes. 



On the Kalroyenmullays many beds of iron ore are met with, but 

 Beds on the Kalroyen- ^^^^y are as a rule visible only for short distances, 

 ™^ ^^' on account of the thick bamboo or tree jungle 



covering the ridges and valleys of the plateau. It would hardly repay 

 the great toil necessary to follow up these beds through the jungles, as far 

 more important iron beds are so much more conveniently situated in the 

 low country, as the Godumullay and Teertamullay, and above all (though 

 not within our area of report) the Kunjamullay, along the base of which 

 the railway from Salem to Beypoor runs for several miles. 



The beds observed on the Kalroyenmullay occur at the following 

 places : — 



12. On the ridge west of Purkumchairy, at the northern extremity 

 of the range about half a mile to the north, is a very bold crag towering 



(293) 



