APPENDIX. 



In the preceding' pages Mr. W. Blanford has detailed the ohserva- 

 tions which have led him to conclusions^ regarding- the geological succes- 

 sion of the beds containing marine fossils identical with those occurring 

 in other countries in the Jurassic series and of the plant-bearing beds 

 found in the same area with them in Cutch, exactly the opposite of 

 those to which the examination of the same district had led Captain 

 Grant in 1836. 



That observer believed that the ' sandstone and coaF of his classifica- 

 tion were lower in position and older than his 'secondary^ limestone and 

 shale, in which he had found abundance of oolitic ammonites and other 

 fossils. He believed both to be of the same general age, ^oolitic/ but his 

 description, though not at all definite, led to the idea that there had 

 been a considerable interval of time between the deposition of the *■ sand- 

 stone and coal ' series and the formation upon these of the ' secondary ' 

 limestones. As pointed out many years since, there was, however, much 

 doubt still remaining on this point. ]\Ir. Blanford^s more recent researches 

 have led him to believe that in places these plant-bearing beds are in all 

 probability actually intercalated with the marine fossiliferous deposits, 

 but that if not so (which is possible), they certainly are younger than 

 these marine beds, not older, as Captain Grant had represented them. 



The age of these marine fossiliferous beds was defined at the time 

 of the publication of Captain Grant^s researches (1837) as about 

 that of the lower oolite of England, ^the whole series of molluscous 

 remains indicating a period extending from the cornbrash to the great 

 oolite.'' Such was tha accepted view of all who had examined their 

 relations. Mr. Blanford''s small collections, although his very brief visit 

 did not enable him to devote much time to such purposes, have added 



c ( 33 ) 



