﻿Correspondence — Dr, 0. Feistmantel. 



431 



both, under the words "Iron" and "Beech," is intended to suggest that 

 the " Iron Age " of Western Europe and the " Beech " zone of the Danish 

 Bogs takes us back about equally far into antiquity ; whilst the position of 

 the line under the word " Bronze," indicates that the " Bronze Age " (still 

 of Western Europe) takes us back from the ancient margin of the Beech 

 era, through the whole of that of the Pedunculated Oak, and about halfway 

 through the era of the Sessile Oak ; and so on in aU other cases. 



KENT'S CAVERN. 



PERIODS. 



Deposits. 



Bones. 



Imple- 

 ments. 



Archceo- 

 logical. 



Banish- 

 Bog. 



Biological. 



Geographical. 



Climatal. 



Black 

 Mould. 



Ovine. 



Iron. 



Bronze. 



and (?) 

 Neolithic. 



1 Iron. 



Beech. 



Recent. 



Insular, 



Post- 

 Glacial. 



Bronze. 



Peduncu- 

 lated Oak. 



Sessile Oak. 



Neolithic. 



Scotch Fir. 



Granular 



Stalagmite. 



Hysenine. 



Palaeo- 

 lithic 

 Flakes. 



Palaeolithic. 





Pleistocene. 



Continental. 



Glacial 

 and (?) 

 Inter- 

 Glacial. 



Black band. 



Cave-earth. 



Insular. 



Crystalline 

 Stalagmite. 



Ursine. 



Palaeo- 

 lithic 

 Nodules. 



Continental. 



Pre- 



Glacial. 



Breccia. 



ooiai^EsiPOisrzDSDn^czE. 



THE CYCADACE^ IN THE "DAMUDA SERIES," AND THENURSCHAN 

 GAS-COAL OF BOHEMIA. 



Sm, — I wish to send a few lines of explanation in reply to two 

 letters which appeared in your Journal for April (pp. 189-191) last, 

 which are intended to modify somewhat two statements in my papers 

 previously published in the Geological Magazine (March Number, 

 p. lOo). With regard to the occurrence of Cycadacece in our Damuda 

 series (and the Triassic facies of that series), the fact will be best 

 established when I am enabled to publish the descriptions of all the 

 fossils in a connected work with figures of all the forms. It will 

 then be seen that so long ago as 1850 a true Zamia had been de- 

 scribed from Burdwan as Zamia Burchoanensis, M'Clell. (which, as 

 the original shows, is a Pterophjllum). The others have been sub- 

 sequently found, although not examined at the time. 



I wish to state that our Noggerathia, from the Damuda series, does 



