OF CENTRAL INDIA AND BENGAL. 211 



generally., of each locality exerted as powerful and controlling an in- 

 fluence then as now, and that, therefore, while we seek for and proba- 

 bly obtain resemblances, or even identities, in these tropical and sub- 

 tropical remains, as compared with the European types, we must also 

 be prepared to see vast differences, and marked discrepancies. 



I have only to add a few words on the nomenclature adopted by 

 Mr. Blanford. 



The term Panchet, the name of a remarkable hill, the name also of a 

 raj or estate, on which this hill stands, and the title of the Rajah who now 

 holds much of this country, and whose ancestors once held almost it 

 all, serves well to denote the peculiar group of rocks which occurs 

 there. The name of Raniganj, also, the well known terminus of the 

 East Indian Railway, situated close to the largest mines in the district, 

 and on the Raniganj series, serves well for that group. While the 

 Talchir series has been already well defined from the locality where 

 first it was separated, as a distinct group, from the overlying rocks. 



There remains the term " Lower Damuda." The group to which 

 this term has been applied has been very well separated by Mr. Blan- 

 ford, but I fear the name itself is open to objections, which render it 

 desirable to alter it. Mr. Blanford has himself shown the inconve- 

 nience of names derived from relative position only, especially where 

 the whole series in detail is not known, in the case of the " Upper 

 Damtida." And the term Lower Damuda is open to similar objection. 

 It is more than probable that future research will fill up the gap now 

 existing between the lowermost beds of this Lower Damuda and the 

 Talchir rocks, (indeed, I believe, that these intermediate beds are to 

 a certain extent already known,) and should these intermediate beds 

 be found to belong to the Damuda system, there would then be a 

 group lower than the " Lower Damuda. I think it, in every point 



