CUAP. IV. 1.] METAMOUPHIC R0CKf3. 65 



map-aroa now under descviption. These beds lie about ] } miles north of 



the first series just described, and perfectly parallel with them. On the 



northern side of the curve the inner series runs from near Ullalapooram 



in a north-east by east direction as a fine ridg-e, showing- two large and 



rich beds dipping south at an angle of 65°. These beds pass up the west 



spur of the Neinalmullay, and come within the limits of the o-reat 



fault just described as shifting the first series. The second series does not 



appear to have been so much shifted, but has had its dip altered to the 



north. It runs up the Kolymullays to the east, 

 Pylum ridge beds. 



and may in all probability be regarded as the bed of 



magnetic iron of the Pylum ridge, which divides the northern basin 



of the Kolymullay plateau from the Yeddapilly basin. It is by no 



means improbable that some connection may also subsist between this 



Pylum ridge iron bed and those at Tummumputty in the Ahtoor Talook, 



for, although the distance is considerable between these two places^ the 



general structure of the country seems to indicate that the beds of the 



great curve are continued eastward into the mass of the Pythoormullay 



and of the Patchamullays, between which are situated the Tummumputty 



magnetic iron strata. 



It is from the great ridge west of the fault before described that the 

 iron sand is obtained for use in the very numerous native iron furnaces at 

 Ramagherrypetta and other villages in the Rajahpoor Talook. The iron 

 bed there is very rich, nearly equal to the very richest parts of the 

 Godumullay and Kunjamullay series, and the iron obtained from it is held 

 in very high estimation, perhaps, indeed, the very highest of all manu- 

 factured in Salem district. 



Included in the series of rocks exposed along the line of section, and 



nearly the very highest members of the series, are 

 Vaulavandy beds. ^ . , , . ^- , . , „ ^^ _ 



two iron beds occurring on the east side or Vaula- 

 vandy ridge, on the Kolymullay, — the ridge which divides the western 

 from the great central basin of the plateau. These are exposed to a limited 

 I ( 2S7 ) 



