34 W. BL.VNFORB, AVESTERN lls'DlA. [ pART I. 



In the Hurda and Nimawur country the strike of the gneiss fohation 

 is east north-east. In the Dhar forest the strike of the cleavage foliation 

 of the Bijawur beds is the same. In the Bagh country the gneiss 

 strikes nearly north-west — south-east,, so does the cleavage of the Bijawurs, 

 and in the latter instance it must be borne in mind that this is distinct 

 slaty cleavage, and that in one spot at least it was clearly seen to cross the 

 original bedding. Again^ in the slates of the Champaneer beds, the cleavage 

 is west-north-west — east-south-east, not differing greatly from the north- 

 west — south-east lamination of the Ruttunmul and Chota Oodipoor gneiss. 



At the same time evidence in favor of the original bedding of the 

 rocks having determined the direction of the foli- 



Some j^oints iu favor of . . . 



foliation beiug in planes ation planes IS by uo means wanting. Bands of 

 of original bedding. it-T 



limestone and schist do, as stated by Mr. Alallet, 



most unquestionably coincide in direction with the foliation. In one 

 instance especially, the band of limestone which stretches along the base 

 of the hills south-east of Ruttunmul and north of Chandpoor, a band 

 of great thickness, was traced for many miles, 10 or 12 at least, its 

 direction throughout coinciding with that of the foliation observable in 

 it. If this mass of limestone is not a bed, what can it be? Bands of 

 granitoid rock, varying in mineral constitution, accompany it, and run 

 parallel to it throughout. And this is not an isolated phenomenon. If it 

 were it would be simple to suppose that in this instance the original bed- 

 ding and cleavage coincided ; but throughout the whole country, similar 

 cases in which bands of peculiar mineral composition run parallel to the 

 line of strike are certainly the rule, although without closer survey, it is 

 impossible to say whether exceptions occur. 



It is evident that much careful study must yet be devoted to these 

 rocks in the field before their history can be cleared from obscurity.* 



* The only suggestion I can make is that the cleavage was due to pressiu-e acting upon 

 nearly horizontal beds, and which crumpled them into a wave-like form, so that the strike of 

 the constituent beds, thus bent in ridges like corrugated iron, may coincide generally with 

 tliat of the cleavage, although the dip of the former is lower. 



( 196 ) 



