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PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



[April 28, 



The above rough section from Shah-Hussan to the crest of the 

 Hala Range, about sixteen miles (though not very correct), will I 

 hope be sufficient to give a general idea of the beds forming the Hala 

 Mountains ; the western beds, marked as vitrified sandstone, strongly 

 resemble the bone-beds, but bones at this point are exceedingly rare, 

 and I found but a few small broken pieces of them. 



The conglomerate rises from beneath the clays of the valley at 

 Gaza-Peer, attaining an elevation of from 100 to 250 feet, and form- 

 ing a well-marked range, stretching north and south as far as I could 

 see ; it exhibits an arrangement into distinct beds, dipping to the 

 east at angles varying from 30° to 45°, the cement being calcareous, 

 and the stones mostly of nummulitic limestone. I found a few 

 minute portions of quartz and some Ostrese (broken) imbedded in it. 

 Moving west, across a narrow valley, I came upon a range equal in 

 height to the conglomerate at Gaza-Peer, with the same direction 

 and general dip ; it forms a mural barrier, passable only by those 

 occasional transverse, or east and west clefts, so common throughout 

 the Hala Mountains : the rock is of a rust-colour, the weathered 

 surface of the beds often polished and having the appearance of 

 vitrified sandstone. Next (moving west) came upon the Kurrachee 

 rock No. 6, with its usual fossils ; this also forms mural cliifs. 

 Further west there were mural barriers, composed of a hard sonorous 

 rock devoid of fossils, and also appearing like vitrified sandstone : 

 they form two or three parallel, wall-like ranges, and in some places 

 attain an elevation of 400 feet from their base. I found a few de- 

 tached and broken morsels of bone here, but no other fossils. Pass- 

 ing through these natural walls, I came upon a recent tufaceous 

 formation of great extent, reaching to the base of the highest range 

 of the Hala Mountains, about two miles. At first it was much broken 

 and intermingled with fragments of the neighbouring rocks, and 

 from the quantity of detached masses dispersed on the surface, even 

 to Gaza-Peer, I imagine that in former times it must have covered a 

 very wide area. Shortly afterwards I reached the tufa in situ, 

 nearly horizontal, containing casts of leaves, branches, &c., nume- 

 rous Pupse and Melanise. It is to be remarked, that the place thus 

 noted is one and a half mile from the waterfall of Peeth, a point 

 where this tufaceous rock is daily forming. Peeth is at the foot of 

 the central and highest range of the Hala Mountains, and when seen 



1. Arenaceous limestones with numraulites, fossils indistinct. 



2. Nummulitic limestone No. 8. 



t Hot spring. 



