326 GEOLOGICAL RELATIONS OF THE ROCK SYSTEMS 



even so old as the Triassic) ; it will follow that we must seek for the 

 representatives of our Damuda series, in some decidedly older group 

 ameng the established series of European geology. 



As we have already said, oar collections from the " Damuda" beds 

 are still increasing rapidly, and we cannot speak of the whole flora with 

 the same confidence, as for the Rajmahal beds. Still our collections are 

 sufficient to enable some conclusions to be arrived at. 



The " Damuda" flora, contains so far as we know, the following : 

 Of Cellular plants, two or three genera. 



Sphenophyllum, 3 



Vertebraria, 2 



Phyllotheca, „ 2 



Cyclopteris,(?) 1 



Pecopteris, 4 



Glossopteris, 5 (?) 



Calamites, < ••• ..• ... 1 



Schizoneura, 2 



Zamia(?) 1 (?) 



Besides wood &c. 

 The remarkable contrast which this flora presents to that from the 

 " Rajmahal" series will at once be seen on comparing the list here given 

 with that at page 318. Instead of Cycadeacecs composing nearly one 

 half of the entire flora (as preserved) we have only one doubtful speci- 

 men (a) (not species). The presence of Sphenophyllum (Trizygia Royle) 

 locally abundant, the constant occurrence, all through the series, of Ver- 

 tebraria in great variety both in size and number ; the abundance of 



(a) This specimen was figured, along with others, in a series of plates which were pre- 

 pared many years since, with a view to their publication in the Asiatic Researches, ac- 

 companied by a description of the plants by Dr. H. Falconer. This description never 

 was completed, and the plates were consequently never published. Many of the figures 

 then engraved were repeated by Dr. McClelland in the very inferior representations given 

 in his Report of the Survey of parts of Bengal in 1848-49. Among others, this figure of a 

 Zumia, to which Dr. McClelland gave the name of Zamia Burdwannensis. AH the specimens 



