120 Notes on Geological Specimens from [Feb. 



The country to Naugri continues to be composed of basalt, which is 

 in some places tabular, with green earth between the laminae ; and the 

 soil is covered with calcedonies, ribbon and pudding stone, jaspers, 

 resembling those found in the Nirmul hills, to which the whole cha- 

 racter of the formation remarkably assimilates, and leaves no doubt of 

 their belonging to one great period of protrusive violence. 



At Naugri, fossils like those of Chiknee are formed ; and with the 

 conical masses of calcedony, having a smooth flat base of cachelong, the 

 centre being filled with quartz crystals and calc spar ; which were 

 afterwards seen in situ at Hingan ghat, inserted between the globular 

 basalt with the apex downwards, the peculiar appearance of the base 

 being perhaps caused by slow cooling. 



At Hingan ghat, a number of blocks, loose, of a black and red chert, 

 containing silicified branches of dicotolydonous trees, and a very perfect 

 portion of a palm (date ?) tree were discovered : and the same kind of 

 rock, but without fossils, protruded from the basalt a little below 

 Colonel Lambton's tomb. The basalt was globular, but seems to have 

 had a tendency to form five or six-sided prisms. The rest of the 

 route to Nagpoor is over a level country, from which a few insulated 

 trap hills rise abruptly, on whose summits basaltic columns are occa- 

 sionally met with. On the south side of the small range of hills near 

 the city, these columns are very regular, and inclined to the south, at 

 an angle of 45°, in consequence of which many of them have fallen. 

 The flat top of the hill forms a pavement of the ends of similar co- 

 lumns perpendicular to the horizon. The round flat topped hill of 

 Sitabuldee, which is accurately described by Voysey in the 18th volume 

 of the As. Rs. is separated a few hundred yards from the extremity of 

 this range, and rests on a decomposing granitic rock ; its great and 

 irregular masses show a similar tendency to crystalline arrangement, 

 and thin sheets of calcedony are found in the joints. 



To connect these observations with those published in the As. Re- 

 searches and Journal, on the countries south of the Nerbada, it is 

 necessary to mention, that at the cantonment of Kampty, eight mdes 

 north of Nagpoor, the sandstone is met with in the north bank of the 

 Kanan river ; and a mile higher up, the granite has been forced through 

 the strata, bending or converting them into quartz rock. The crystals of 

 felspar and plates of mica are remarkably large, and mica slate is seen 

 in a quarry a few hundred yards distant. Beyond this are some small 

 hills of upraised gneiss ; near to which a conical hill of curiously 

 altered rock, resembling that above the hot springs of Kair, has burst 

 through a limestone, which it appears to have converted into a fine 

 crystalline bed, like that found in the primitive districts of Scotland. 



