mallet: coal-fields of the nXgI Hills. 



of persistency, quite sufficient for mining purposes. How far they 

 actually do extend, and whether they may not be traceable for con- 

 siderably longer distances, is a question yet remaining for solution. 



In some instances the seams vary more rapidly, in their subordinate 

 layers at least, although possibly they are not less persistent as a whole. 

 The following sections of a seam below Namdang (Dikhu valley) were 

 taken at outcrops 70 yards apart :— 



Ft, In. 



Ft. In. 



. c Brownish-grey shale, seen 

 (.Brown shale 





4 

 1 



6 

 6 



. c Brown and brownish-grey 

 I shales 



15 







i — Coal 





3 



9 



i — Coal 



4 







e Carbonaceous shale . . . 

 \ Brown shale 



... 







10 



h — Carbonaceous shale 



1 



3 





1 













g — Coal 





1 



5 



g — Coal 



1 



7 



f — Brown shale 





3 







f — Carbonaceous shale 







3 



e — Carbonaceous shale ... 



... 



1 



8 



e — Coal 



^ Brown shale ... ... 



1 

 1 



3 







d— Brown shale, about... 



... 



5 







d < Carbonaceous shale 

 ^ Brown shale, seen 





 5 



6 

 



c — Inferior coal, laminated 



and 







"1 







brittle at outcrop 



... 



5 



6 









b — Coal with some layers of carbona- 







^ 1 Not seen. 







ceous shale 



.. 



2 



6 



'> 







a — Brown shale, seen 



... 







8 



J 







A rough measurement of the thickness of the coal-bearing group 



Thickness of coal-mea. ^"^ *^^ ^^^^^ ^^^^^y indicated something like 

 s^^^- 2,000 feet; but this amount does not include the 



portion sunk below the surface at the faulted boundary. In the Jaipur 

 region merely the upper beds are visible above the alluvium level. 

 The thickness in the Makum field is not improbably considerably more 

 than that exposed in the Dikhu valley. 



The occurrence of the Jaipur coal in contact with rocks of the 



Sub-Himalayan series, and in the same general 

 Probable age. . , , • • i • 



relation to them as are the lignite-bearmg num- 



mulitic strata of the Punjab, originally suggested to Mr. Medlicott 

 ( 294 ) 



