26 .ON THE GEOLOGY ^ 



the red oxide of iron and containing mica disseminated in small particles ; 

 %pon it reposed a bed of siliceous sand-stone, tinged green, and inter- 

 calated with slate clay, or shale, of the same colour; these beds were 

 compact and hard, but upon them was a thick stratum of variegated 

 sand-stone, having an argillaceous cement, which continued to the sur- 

 face. 



From the cataract of Bilohi, I proceeded to that of Bouti, ten miles 

 further west ; this waterfall is exceedingly picturesque, not so much from 

 the fall of water, which is four hundred feet, as from the extent of the 

 cirque ; the lowest rock is greenish white arenaceous sand-stone, not quite 

 so compact as that of Bilohi, though, perhaps, it may be a continuation 

 of the same, and upon it, (commencing at the depth of three hundred feet 

 below the surface), is a variegated or mottled stratum, then follows a lilac 

 red, or purplish stratum, which becomes more and more light coloured, 

 so as to approach salmon colour, before it reaches the surface. 



The enormous masses of kankar which have been rolled down by 

 torrents into this chasm, are very remarkable ; the surrounding fragments 

 of sand-sto?ie, are all worn, or their edges rounded by the attrition of water ; 

 but these masses remain unaffected, and continue to defy both the force 

 of the stream, and the ravages of time. 



From Bouti, I proceeded to Keuti, twenty-four miles further west ; 

 here the fall of water is two hundred and seventy-two feet, and the depth 

 of the escarpment three hundred and twenty feet : the lowest stratum of 

 rock is the variegated or mottled sand-stone mentioned above, and upon 

 it reposes the lilac red, or purplish stratum, which last, commencing at 

 the depth of two hundred and fifty feet, continues to the surface, varying 

 only in consolidation, and becoming lighter in colour. 



From 



