» GEOLOGY 



111 the papers just referred to^ the different localities in India, in 

 which this Kajmahal series had been identified,, were stated to be — 1st, 

 Rajmahal Hills in Beng-al ; 2nd, near Triohinopoly, in the Madras Presi- 

 dency; 3rd, in the Province of Cutch, Western India; 4th (very doubt- 

 full}^), near Jubbulpoor, in Central India. The flora of this last locality 

 (the ' Upper Damuda'' or ' Jubbulpoor' beds* of the late Mr. J. G. Med- 

 licott) was shown to be diiferent from that of the true Rajmahal 

 and its relations were doubtful. The presence and abundance of Palao- 

 zamia and other Cycads were the c4iief characteristics of this series, 

 wherever seen. 



It was in Cutch that these beds and their peculiar fossils were first 

 observed. A paper by Captain Grant in the Transactions of the Geologi- 

 cal Society of London (2nd Ser., Vol. IT, page 289) contains a rather 

 detailed account of the geology of Cutch, and is accompanied by an 

 excellent geological map of the province. The plant fossils obtained 

 were described by INIorris, the animals by Sowerby. 



The peculiar circumstance which renders the Zamia-beds in Cutch of 

 unusual interest is their association with rocks containing marine fossils 

 of undoubted Jurassic age. In every other locality, except Trichinopoly, 



* These beds were described by the late Mr. Medlicott in his paper, ' On the Geology 

 of the central portion of the Nerbudda District' (Mem., Geol. Survey, India, Vol. II,) under 

 the name of ' Upper Damuda.' The separation was made and the name given on good 

 geological grounds, and it was at first thought that the beds represented the ' Rajmahal 

 group' of Bengal. But further examination of the fossils showing a distinction from the 

 latter, while it equally showed a marked separation from the ' Damuda' (' Lower Damuda'/ 

 series. In subsequent MSS. reports, Mr. Medlicott adopted for the becls which he had 

 first named ' Upper Damuda' in the Nerbudda valley, the name ' Jubbulpoor,' the rocks being 

 well developed near that town. Ko very large series of fossil plants was obtained, and 

 even those procured have not as yet been sufficiently examined and compared; while 

 Mr. Medlicott's own researches (which, beiug incomplete, have not been published) showed the 

 probability of several distinct groups of beds existing between the time Damudas and the 

 Mahadevas in the upper parts of the Sone valley. The exact relations of the so-called Jub- 

 bulpoor beds are, therefore, still doubtful. * Mr. Oldham also informs me that more recently- 

 obtained specimens throw a doubt on the identity even of the PaliEozamia, said to occur in 

 the ' Upper Damuda' of the Nerbudda valley with either of the true Cutch species. 

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