THE LAKI RANGE, ETC. 127 



issues in a ravine within the hills. The spring is moderately copious, 



and gives off a larger quantity of sulphuretted hy- 

 Hot-spring of Laki. 



drogen than any other hot-sjiring in the province, 



although all are more or less impregnated with the gas. There is, as 



usual, a deposit of calcareous tufa from the water. 



The ravine in which the spring occurs runs south-17°-west, and is 



formed by a synclinal, probably somewhat faulted, 

 Sections of range. . 



of Khirthar limestone. The relations of the beds 



are shown in the figured section (Plate III, fig. 3, p. 87). To the east- 

 ward no trace of Nari or Gaj rocks is seen, but in many places the 

 Manchhar beds are faulted against the Khirthar limestone. The section 

 of the range about 2 miles south of the spring, where a foot-path, known 

 as Dharan Lak, crosses the hills, is shown in the sketch (Plate III, 

 fig. 4, p. 87). 



In the soft shaly beds of the Khirthar group exposed in this section 



a large collection of fossils was obtained, corn- 

 Fossils in shales. 



prising several forms of nummulites, at least 40 



species of Mollusca, and the two crabs figured by MM. D'Archiac and 



Haime under the names of Arges murchisoni and A. edtvarcUi. Amongst 



the Mollusca, besides a Nautilus undetermined, were Crassatella halaensis, 



Corbula sulexarata, Cordis elliptica, Lucina subvicargi, Venus cf. cyrenoides, 



Cardita dejpressa, C. mutabilis var., Cardium halaense, ISucula margaritacea, 



Ckama cf. geslini, Ostrea vesicularis, Nerita schmideliana, and Qvulum 



murchisoni. A species of Anomia, also, is abundant and characteristic. 



It is probable that a considerable proportion of the Khirthar and Nari 



species described by MM. D'Archiac and Haime were procured in the 



neighbourhood of Bhagothoro and Laki. 



About a mile south of the Dharan Lak the beds below the Khirthar 



„, , . K ,. ,, , limestone appear in a valley within the range, and 



limestone. these beds extend thence to the southward for a 



distance of about 35 miles, being brought up along a faulted anticlinal. 



For the general section, comprising, in descending order, Ranikot beds 



( 1*7 ) 



