92 Scientific Proceedings, Royal Dublin Society. 



than any other of these older sub- divisions, hut there is still the 

 difficulty that a fossiliferous conglomerate hand, having an extent 

 of several miles, would indicate the existence of the parent beds 

 within measurable distance, while none of the layers of the Mag- 

 nesian Sandstone group have given encouragement hitherto towards 

 a hope that fossils would ultimately be found in them. 



If we turn, unwillingly, from the possibility that the fossils were 

 derived from this source, and look for another outside the Range 

 itself, I know of no rocks in the outer Himalayan region to the 

 northwards and north-east, more likely to have furnished the 

 pebbles, and to the southward the flat alluvial plains and desert 

 stretching away towards Sind are unbroken except by a small 

 group of hills on the Chenab River, called the Korana Hills, 

 separated by some forty miles from the Salt Range. I have seen 

 these only from the range itself, but Dr. Fleming has described 

 their rocks in a Paper to the Asiatic Society of Bengal (vol. xxii., 

 new series, 1853), as dark, " coarse-brown ferruginous quartzose 

 sandstone, alternating with beds of a greenish quartzite, which in 

 many places passes into silicious clay slate," the sandstone being 

 traversed by numerous quartz veins containing masses of hematite. 



Another observer, my former colleague, Mr. Theobald (Jl. As. 

 Soc, Bengal, vol. xxiii. p. 674), describes the rocks of these hills 

 as deeply ripple-marked slate — the slaty structure feebly developed, 

 gray in colour, stained red and yellowish, weathering to a deep- 

 burnished brown, &c. The whole of these characters stamp the 

 rocks as widely different from any of the Salt Range groups : this 

 of itself may favour the supposition that they formed the basal 

 portion of a series, some part of which may have existed as the land 

 from whence the Conularia-pebbles were derived. 



I have elsewhere mentioned the occurrence at more than one 

 widely separated Salt Range horizon 1 of conglomeratic zones 



1 My view as to the difference of horizons at which these houlder-heds occur is not 

 accepted in Dr. Waagen's recent Paper in the Indian Records previously referred to. 

 He regards the whole of these boulder-heds as glacial, and as occurring upon one 

 horizon (p. 34). Stratigraphic conclusions are only geologically valuable when based 

 upon carefully observed and compared facts and observations. My conclusions are the 

 results of such examinations, and Dr. Waagen has advanced nothing which leads me to 

 abandon them, while, I regret to say, the more I consider the matter the less reason I 

 see far adopting his views to the contrary, tbese being directly at A r ariance with strati- 

 graphical facts. 



