INTRODUCTORY. 27 



P. semireticulatus, Sow., also in Europe (Russia) and America, 

 in Siberia, and in the Altai Mountains. 



P. costatns, Sow., also in England, Russia, and Missouri. 



P. Humboltii, D'Orb., Salt Range, and western slope of the northern 

 Ural Mountains. 



M. de Verneuil speaks of Russia, the Ural, and the Altai as links 

 between India and England as regards the organic remains referred to. 



In his large work on the economic products of the Punjab,"^ Mr. 



Powell, apparently following Dr. Fleming, states 

 Baden.PoweU, 1868. • ., -n. • 



that the principal beds of salt occur m the Devonian 



group on the southern side of the Salt Range. Prom Dr. Fleming's 



reports he extracts the full description of the working of the mines. 



The Range, its geographical position, the positions of its adjacent ridges, 



and its geological structure are described. 



At page 13 Mr. Powell states, apparently as an extract from 

 Dr, Fleming, that grains of native platinum are found in the same way 

 as the gold in the Indus, being called by the natives " white gold,'' and 

 that they despise it exceedingly. In Dr. Fleming's " Trip to Pind- 

 Dadun-Khan, &c.,"t (at page 682), he says, from repeated inquiries 

 among the gold-washers, he could not discover that platinum occurred. 

 This is in accordance with my experience. 



A short descriptive paper by myself on the structure of Mount 



Tilla, at the eastern end of the range, appeared 



in the Records of the Geological Survey.^ The 



series as exposed here diflFers greatly from the development of the rocks 



further westward. 



Mr. Lyman was deputed to furnish a specialjreport upon the 



mineral oil of the Punjab and its sources. The 

 Mr. B. S. Lyman, 1870. 



field of his operations lay chiefly north of the Salt 



* Economic Products of the Punjab, by Mr. Baden H. Powell, C.S.,:;Vol. I, pp. IS, 69^ 

 and 130, &c., 1868. 



t Jour. As. Soc, Beng., Vol. XVIII, p. 682, July 1849. 



X Records of tlie Geological Survey of India, Vol. Ill, No. 4, 1870. 



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