Chap. V.] post-sivalik deposits. 159 



very different from what is now apparent. As examples of this I may 

 mention the case of the Blini, where its course turns out of the band of 

 soft nummulitic strata to cut a narrow gorge across the strike of the hard 

 Infra-Krol rocks, to fall again, after two more bends, into the course of 

 the same valley of soft rocks. The Sutlej at Bubhor gives another 

 instance of the same kind. It cuts a narrow defile across the Naina Devi 

 ridge, which is composed of comparatively hard rocks, in which no sign 

 of crack or bend is traceable, whereas it might apparently, with much 

 less trouble, have made its way round the point of the ridge, continuing 

 throughout in the softer upper rocks.* 



* For those who wish to see facts of this kind discussed in some detail, I may refer to an 

 excellent paper by Mr . Jukes " on the mode of formation of some of the river valleys in 

 the south of Ireland" (Quar. Jour. Geol. Soc, London, Vol. XVIII., p, 378). 



