v.— -The Naziea Field. 



Like the Jaipur^ the Nazira field is divisible into two sections^ — viz., 



the area drained by the Saffrai and its tributary- 

 Limits, &c. 



the Tiru^ and that drained by the Dikhu. These 



basins are separated from eaeli other by a ridge which, at Kongan H. S. 

 and the eminence two miles to the north, has an elevation of more than 

 2,000 feet; but between these points, at the head of the Tiru, there is a 

 depression or saddle, the lowest part of which is 670 feet above the plains. 

 The same ridge east of Charaido is only a little over 300, and that is 

 probably the route by which it would be found most convenient to trans- 

 port most of the Saffrai coal. There would, however, if arrangements 

 for transporting coal from the Dikhu valley were organized, be no 

 serious difficulty in utilizing them for the carriage of coal from the 

 upper part of the Tiru also by getting it across the above-mentioned 

 saddle. 



As a whole, the coal measures have a high inclination towards the 

 south-east. The northern part of the Saffrai valley being occupied by 

 alluvium, they are seldom visible there except outcropping in the beds 

 of the streams."^ The most northerly point at whicli they have been found 

 IS a little below the junction of the Chota Taukak with the main stream. 

 Ascending the latter, the coal rocks are soon replaced by the Disang 

 beds, but south-east of Tirugaon the former again appear, and then a 

 second time, on account of the winding course of the river, give place to 

 the Disang rocks. The coal measures rise above the alluvium in the 

 low hill east of Tinigaon. I regret that I have no observations of them 

 between the end of the Chingan ridge and Chingan hill itself. North- 

 west of the latter, however, they are finely seen in the head-water 

 feeders of the Tiru. 



* It is scarcely needful to remark, that the geological lines drawn on the map through 

 the alluvium indicate the probable boundaries of the coal measures beneath it. 



( 328 ) 



