^ Mr Hardie ofi the Geology of the 



ference to a central granite axis, and, in the instance under con- 

 sideration, to the central granitic axis of the Aravulli mountain 

 chain. 



It does not appear that the granitic axis of the Aravulli can 

 be traced continuously throughout the whole extent of this 

 chain ; as far as our knowledge enables us to speak, the line of 

 continuity is frequently interrupted, but facts have been col- 

 lected sufficient to satisfy us of the existence of such an axis, the 

 most elevated point of which would appear to be the mountain 

 A boo, which rises to the height of 5000 feet above the sea. 



The general direction of the Aravulli chain, from its com- 

 mencement on the frontiers of Guzerat, to its termination on the 

 borders of Dehlie, may be stated to be N. N. E. and S. S. W., 

 or rather this range describes a curve having the above general 

 direction. Towards the south, the strata have a decided bearing 

 to the east of south ; in the central regions, again, their direc- 

 tion is nearly north and south, and as we proceed north, they 

 are observed trending to the east of north. These remarks, at 

 least, are applicable to the rocky belts which occur to the east- 

 ward of the central ranges of the Aravulli. To the westward, 

 other modifications may perhaps be discovered, as it does not 

 necessarily follow that there should be a perfect parallelism be- 

 tween the strata forming the opposite flanks of a mountain mass 

 so extensive. Proofs of this, though on a smaller scale, I shall 

 have occasion to allude to in the sequel. 



To the east and west of the Aravulli chain, the country has a 

 gradual and almost imperceptible slope. On the one side, we 

 have the districts bordering the Gulf of Kutch, the plains of Mar- 

 war, the arid districts of Jesselmere and Bicaneer, and the sandy 

 desert. On the other, we have the modern district of Ajmer, 

 Kishenghur, and Mewar ; and further to the east, the principa- 

 lities of Jepoor, Kotah, and Boondee ; while to the south of these 

 we have the table land of Malwa, composed of an enormous 

 mass of overlying trap-rocks, the precise limits of which, to the 

 eastward, have not as yet been correctly ascertained. 



I have already stated that the strata of the Valley of Oodipoor 

 bear N. N. W. and S. S. E. In this respect they are conform- 

 able to the formations which occur to the south, and deviate, to 

 a certain extent, from the general line of bearing of the Ara- 



