72 WYNNE : TRANS-INDUS SALT REGION, KOHAT DISTRICT. 



hills, valleys, or ravines — the fact being- always borne in mind that even 

 if these erosive agencies exposed the gypseous series, as seen in this 

 district, the salt need not necessarily be present, for it may have 

 thinned out and entirely disappeared. 



To the eastward the extension of the salt and gypsum series, if it 

 continues in that direction, is buried beneath the sandstones and clays of 

 the Potwar country, some indications of it perhaps existing (as sug- 

 gested) in the gypsum of the Subathu zone near the hills to the north- 

 ward, or in the source of a brine spring at Kalra close to the southern foot 

 of the Bakrala ridge, not far from the Grand Trunk Road. 



North of the villages of Lachi and Sireemeyla, both in this salt 

 region, salt is unknown, but some of the streams issuing from the gypsum 

 on the southern sides of the Gurgurlot hills are said to be saline, at no 

 great distance from the salt-bearing tract. 



Southward of the district, too, in the Sheen and Lawaghar moun- 

 tains, rock-salt is likewise unheard of westward of the Lun nullah, unless 

 its existence be indicated by some saline springs many miles to the 

 southward recorded by Dr. Fleming as " issuing from saliferous sand- 

 stones under carboniferous limestone near the village of Bahadur Dok/' 

 not far from the junction of the Kuram with the Indus."* The Lun 

 nullah salt is considered, for reasons already given, to belong to the Cis- 

 Indus salt series, and any saline sources for these springs would from 

 their description be referable to the same much older series rather than 

 to that of this district. 



If then the country to the north and south, where the rocks are 

 known to be greatly disturbed, and lower beds than any found in this 

 district are exposed, shows no extension of the local salt deposits, the 

 presumption that they extend visibly to the west would be unreasonable, 

 particularly when, as far as could be seen in this direction from the high- 



* Dr. Fleming's Report, Jour,, As. Soc, Beng,, 1853, p. 260- 



( 176 ) 



