276 Notes on the South Mahratta Country, fyc. [No. 160. 



Close to a small pagoda, the sandstone at the S. W. flank of the ridge 

 near the edge of the overlying trap is penetrated with a vein of black 

 manganese, associated with iron, about three inches broad. 



At Bugganala, about two and a half miles westerly from this sand- 

 stone ridge, the limestone and shales are again seen dipping N. 20° E. 

 direction of strata E. 20° S., layers and veins of a reddish jasper and 

 chert intersect the limestone, a phenomenon that is usually seen 

 where the limestone comes in contact with plutonic or hypogene 

 rocks. 



Farther west, between Bettighirry and Ooperhutty, a bed of quartzy 

 talcose schist, approaching protogine, is crossed with layers of litho- 

 marge. 



Nearer Ooperhutty, the overlying trap is again seen in low cliffs 

 on the banks of a nullah, resting on a red amygdaloid, which contains 

 layers of a fine red bole with a shining streak, and conchoidal fracture. 

 It does not adhere to the tongue ; falls to pieces in water ; does not 

 form a plastic clay. 



The trap is associated with wacke, with green earth in nests, and 

 a chocolate amygdaloid reticulated with strings of calc spar, and im- 

 bedding calcedony and zeolites. 



A loose sandstone, associated probably with the laterite, and newer 

 than that which has just been described, rests in horizontal partial 

 layers on the trap, of which it imbeds small fragments. 



On approaching the sandstone ranges of Colabanghy and Gokauk, 

 the hypogene schists are seen rising to the surface at their base, and the 

 intervening limestone and its associated shales are wanting. The hill 

 of Punchmi to the S. W. of the town of Gokauk has a base of 

 garnitiferous gneiss, hornblende and chloritic schists, capped with sand- 

 stone in massive beds. These beds are interstratified with layers of 

 conglomerate containing rounded and angular fragments of reddish 

 quartz rock, quartz, and a greenish and grey chert. These fragments 

 in many instances appear to have been deposited so tranquilly as to 

 have been arranged agreeably to the laws of gravitation, and occur 

 most frequently at the seams of the thick sandstone beds. 



The hypogene rocks have a dip of about 60° towards the E. by N., 

 direction of beds S. 5° E. The sandstone rests on it unconformably, 



