MliDNAPOEE, ORISSA, &C. 257 



supposition. The quartzose gritty rock of Koro is to a limited extent 



used by the people in the neighbourhood for quern-stones, curry-stones, 



&c.* 



Close to Koro hill on the S. West, hornblendic schists occur, traversed 



by numerous veins of pegmatitic granite, all of 

 Granite veins. 



which have a common direction W. S. W. to E. 



N. E., and similar veins occur even more abundantly a little further to 



the south. They seldom exceed one foot in width, and are frequently 



not more than a few inches thick, but they may often be traced for 



hundreds of yards, the fleshy-white colour of the felspar contrasting 



strongly with the dark greyish-green of the decomposing hornblendic rocks 



about. They form frequently a little sharp ridge, and look like a great 



white cable stretched along the surface. Schorl is abundant in them, 



frequently constituting more than a third of the 

 Schorl. . 1 • 1 <. 1 • 1 



whole mass, and with a pinkish felspar in largely 



crystalline masses, and pure quartz, forms the entire rock. 



Near to a small village called Kendbursa, a little west of Gungajole- 

 ghati, there is seen a thick vein or dyke of porphyritic greenstone, which 

 runs N. W. It is nearly 60 feet wide. 



To the south of Koro hill, the gneissose rocks, which to the north had 

 exhibited a prevailing strike to a little N. of 

 east, all have their strike well marked to a little 

 W. of north, and are more quartzose. Obscurely seen trap dykes tra- 

 verse them near Moheshpur, and Chandpur. The rocks become marked- 

 ly hornblendic, and with granite veins very similar to those noticed 

 above, as we approach the town of Bancoorah, by Poorunderpur, and 

 towards Kessurah. To the east, the gneiss becomes gradually covered 

 up with laterite masses, and coarse sandy clays. 



* It is similar in composition, &c., to the stone sold in Calcutta as " Burdwan 

 paving stone," which is, I believe, all derived from near Susinia Hill to the west. Koro 

 Hill stands close to an excellent road, and within a short distance of the present terminus 

 of the railroad at Baneegunj, and the stone from it could be very economically obtained. 



B 



