4 BLANFORD : GEOLOGY OF WESTERN SIND. 



greater part of the same time, a portion of the season 1875-76 being' 

 employed by me in a traverse of Eastern Sind and of the desert inter- 

 . vening between Sind and Rajputana. The greater portion of Lower 

 Sind, comprising the larger area, was mapped by Mr. Fedden ; the hills 

 of the Shikarpur Collectorate, and a few detached tracts in Lower Sind, 

 such as parts of the Laid hills, and the Habb valley, by myself. The 

 present memoir has been compiled from Mr. Fedden's reports and my 

 own. 



Besides his work in the field, Mr. Fedden has compared and deter- 



n o -, mined a large proportion of the fossils collected. 

 Comparison of fossils t> r r 



collected. Professor Rupert Jones, one of the highest living 



authorities on Foraminifera, very kindly examined a series of the num- 

 mulites and some allied forms, so that most of the identifications of this 

 most important but difficult group may be depended upon. Professor 

 Martin Duncan has been so good as to undertake the examination and 

 description of the corals, but it is to be feared that the results of his 

 labour will not be received in time for use to be made of it in the 

 present memoir. The identifications of Mollusca and Echinodermata 

 are by Mr. Fedden and myself. 



Two notices of the principal results of the Geological Survey of 

 Published notices of ^ind have already been published in the c ' Records 

 survey results. f ^he Geological Survey of India 1 /' and a genera! 



description of the geology is given in the Manual of the Geology of 

 India. 3 The preparation of this Manual has, however, taken so much 

 time that the present memoir has been delayed until two years have 

 elapsed since the survey of the province was completed. 



Although much has been written on the geology of Sind, the number 



_ • . of previous observers, before the examination bv 



Frevious observers. J 



the Geological Survey commenced, was small, and 

 most of the published observations related to the palaeontology alone. 

 The first, and for many years the only, description of the geology of 



1 Vol. ix, 1876, p. 8, and Vol. xi, 1878, p. 161. 



2 Tages 445 to 476. 

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