64 mallet: coal-fields of the naga hills. 



no excavation or seam is now visible, there is a large heap of coal still 

 remaining", from which the site of the quarry is probably not far distant. 

 In Mr. Bruce''s illustration it is marked on the left bank of the river. 

 He describes the seam as 24* cubits (36 feet) thick, including a parting 

 of about 4 feet, and the coal in the above-mentioned heap is, even now, 

 of the best quality as to hardness. Some shale beds in the river near 

 it dip east-15°-south at 40°. 



Numerous coal seams are to be found in the nallas north-west of 



Kongan H. S. In the section given at p. 23 there 

 Tiru nadi. 



are eight seams m a stratigraphical thickness of 



130 feet, and at least a dozen more are visible in the same stream. 

 Most of them are, however, useless, only one of them attaining a thick- 

 ness of 3 feet. 



In another nalla, also, close by, many beds of coal are exposed. 

 The principal outcrops are — 



1st. — Coal ... ... 



Brown shale 



Coal, containing a few calcareous nodules 



Coal in seam 

 2wi.— Hard coa?, dipping E. 40° S. at 70° 

 2rd. — Hard coal, containing a few calcareous nodules : 



dip W. 40° N. at 80° ... ... ... 7 6 



In the stream into which the above nallas flow the following out- 

 crops are visible : — 



Ft. In. 



Isf.— Hard coaZ, dipping south 30° E. at 70° ... ... 6 



2nd. — Hard coal, containing a few calcareous nodules : dip 



S. 30° E. at 60° ... ... ... 6 4 



^d. — Coal of medium hardness, containing a few calcareous 



nodules ; dip S.-E. at 70° ... ... ... 2 10 



4^A.— Hard coaZ, dipping E. 20 S. at 60° ... ... 4 6 



5th. — Hard coaZ, dipping S. at 90° ... ... ... 4 6 



The Isi and 2nd are very likely outcrops of the same seam. 

 ( 332 ) 



Ft. 



In. 



1 



4 







6 



2 



4 



3 



8 



2 



8 



