of the Beloochistan Hills. 391 



The Trukkee range, at the foot of which these appearances are 

 presented, is composed entirely of nummulitic limestone, and attains 

 an elevation of ahout 3000 feet above the sea. The strata dip south- 

 wards towards the Deyrah Valley at angles varying from 45° to G0°, 

 and they form a continuous mural barrier or a natural fortification on 

 a stupendous scale, through which there are many passes formed by 

 clefts in the manner noticed above. I traced this range holding the 

 same mural character for about seventy miles from east to west : 

 and I also noticed other ancient conical hills at its base, about twenty 

 miles east of Deyrah. Near the foot of the same range, at Kissoo- 

 ker, there is a tepid spring. At the time I noted its temperature 

 the air was 70° and the spring 71° of Fahrenheit. There are other 

 tepid springs in these hills, one of which at Doza Khooshtie bursts 

 up through a fissure in the limestone ; but I did not note its tempera- 

 ture. From the appearance of the limestone, which in many places 

 at Doza Khooshtie is rapidly disintegrating, and from some calcined 

 clays which I noticed, there is little doubt that an old volcanic vent 

 existed in that neighbourhood. 



The Deyrah Valley requires further notice, and appears to have 

 been formed by subsidence ; but however that may be, I am cer- 

 tain that the conglomerate at one time rested on the limestone, be- 

 cause there are still detached portions of it resting conformably on 

 the limestone. The opposite or southern side of the Deyrah Valley 

 exhibited the same evidence, although not so distinctly, and a beau- 

 tiful section of the limestone is seen in the pass or cleft through the 

 Trukkee Hill. The floor of the pass is on a level with the base of 

 the mountain, and the higher (outer) strata are full of fossils ; but 

 moving onwards through the pass and towards the north the lime- 

 stone becomes of a lighter colour, and further on obtains a slaty 

 stratification containing few fossils. From this point to the Murray 

 Hills there are numerous confused and broken hills, at a lower eleva- 

 tion, which have undergone great disturbance, but I was unable to 

 inspect them closely. 



The Murray Hills are composed of nummulitic limestone ; they 

 present a precipitous escarpment to the southward, and the strati- 

 fication is nearly horizontal. The range is higher than any of those 

 between it and the Desert. 



3 E 



