20 WYNNE : GEOLOGY OF THE SALT RANGE IN THE PUNJAB. 



mig-ht have afforded to . the age of that salt is lost, and onlj the total 

 dissimilarity of the associated rocks in each region indicate these saline 

 deposits of Mandi to be different from those of the Salt Range. 



For the sake of comparison, Mr. Medlicott^s district being the 

 nearest carefully examined ground in that direction to the Salt Range, 

 his classification of its rocks is abstracted from the memoir and given 

 below.^ 



A paper in the Quarterly Journal of the Geological Society of 



London for February 1862,t by the distinguished 

 Thos. Davidson, 1862. 



palseontologist, Mr. Davidson, treats of the carboni- 

 ferous Bracliiopoda of the Salt Range collected by Fleming and Purdon. 

 Seventeen species are described, including* the Genera Terebratula, Athyris 

 Retzia, Spirifera, Bhynchonella, Streptorhynchus, Orthis, Froductus, 

 StropJialosia, and Aulosteges. Several of these are figured, and the author 

 observes that the total number of carboniferous Brachiopoda thus dis- 

 covered " amounts to about twenty-eight species, of which thirteen at 



* Sub -Himalayan Series. 



Conglomerates, sandstones, clays. 

 Lignite sandstones and clays. 

 Kasauli, gray and purple sandstones. 

 Dagshai, purple sandstones and red clays. 

 Sabathu, fine silty clays with limestone, 

 (Nummulities.) 



Himalayan Series. 

 1. — Unmetamoephic — 



Keoi ... Krol Hill ... Limestones. 



Infea KeoIi . . . Ditto . . . Carbonaceous slates or shales. 



BliNl ... Blini River ... Limestone and conglomerate. 



2. — Metamoephic — 



Crystalline and svib-crystaUine rocks, &c. 

 f On some carboniferous Brachiopoda collected in India by A. Fleming, M.D., and 

 W. Purdon, Esq., P.G.S., by T. Davidson, Esq., F.R.S., F.G.S. Quar. Jour. Geol. Soc, 

 London, Vol. XVIII, page 25, Feb. 1862. 



In a foot note to the paper, Mr. Davidson mentions the following species as having been 

 identified by M. de Verneuil and himself in 1853 : Ailiyris Roysii, a Spirifera neai-ly 

 related to S. lineata, Streptorhynchus crenistria, Froductus Cora^ P. Fleming ii, P. casta- 

 tus, and P. Humboldtii. The determination of some of these first established the fact of 

 carboniferous strata occurring in the Salt Range. 



( 20 ) 



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