PREVIOUS OBSERVERS. 7 



as a similar rock further westward enclosing pebbles of nummulitic 

 alveolina limestone. 



At pages 487 and 488 the erroneous observations of others as to the 

 distribution of the salt marl in the present district are quoted, and there 

 is said to be no reasonable doubt as to this rock being sedimentary * 

 with this latter statement I cannot entirely coincide. 



In the introduction to the Manual at page xxiv, the salt marl is said 

 to be immediately overlaid by the carboniferous limestone in the west 

 Salt Range, and this relation is described as an unconformity between 

 these groups. However much this may seem to be a local interpreta- 

 tion of the case at Kalabagh (trans-Indus), I have never found it to be 

 so in the Salt Range (cis-Indus), and if such a relation existed, its im- 

 portance would have claimed full notice. On the contrary, conformity is 

 stated to mark the succession throughout ; and in every Salt Range 

 region to the westward where the normal relations of the rocks are 

 described, other beds are shown to intervene between the salt marl and 

 the carboniferous groups, while the conditions of contact near the Indus 

 are stated to be those of dislocation. If the misconception arose from 

 the appearance shown in the greatly contracted ideal diagram at page 69 

 of my Report, intended only to exhibit the distribution of the Salt Ran°*e 

 groups, 1 it might have been corrected by the text at pages 53, 56, 58, 

 66, 86, 90, 93, and 258, particularly the third paragraph on page 90, 

 where one of the intervening groups is said only to be lost amid com- 

 plicated dislocations near Mari on the Indus. 



Slighter inaccuracies, as to the existence of the carboniferous group 

 at Shekh Budin and the trias in the Chichali range, are to be found in 

 the work at pages 491 and 493, the authority quoted being erroneous. 2 



1 In colouring this diagram to render it more distinct, I discovered an error, whether 

 my own or the draughtsman's who copied it I am unahle to say. The carhonif erous group 

 No. 6 should have heen shown to thin out just "beneath the dotted line under the Nila-wan 

 in the profile ahove. It is, however, stated to commence there in the text, Salt Range 

 Memoir, p. 95. 



2 In p. 493, line 11 from foot, there is a misprint of " west" for " east." 



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