MALLET, VINDITYAN SERIES. ^ 9 



M. Jaquemont regarded as a re-appearance of the Kuttra rock. South 

 of Putrahiit a third plateau was seen, the slopes of which exhibited shaly 

 beds (Sirboo shales) in the lower part, while a lesser thickness of sand- 

 stone (upper Bundaii*) capped the whole. Captain Franklin's statement 

 of having" found petrified wood and impressions of ferns in the limestone 

 at Nagode induced a similar search by M. Jaquemont, but without 

 success. He does not quite seem to have recognised the Punna range 

 of hills as the continuation of those at Kuttra, but speaks of it as form- 

 ing a third very- distinct plateau. After leaving Punna, the dia- 

 mond mines of which are described in detail, M. Jaquemont proceeded by 

 Bisramgunge ghat to the hill forts of Adjigurh and Kallinjer. At all 

 these places syenitic roCks were seen on the slopes of the Tiill, covered at 

 the top by a capping of sandstone (Kymore), and at Adjigurh, the author 

 alludes to porphyritic bands intercalated in the lower portion of the 

 latter. He believed that this sandstone represented the new-red- 

 sandstone of English geologists, and that of Tara and Kuttra ghats 

 belonged to another formation. 



Dr. J. Adam has described* the rocks met with on his route 

 '' from the Jumna to the Nerbudda by Banda, 

 Lohargong, Bellary and Jubbulpur.^'' He depicts 

 the physical aspect of the Bundelkund crystalline hills and the manner in 

 which he conceives them to have been formed by local elevation and 

 subsequent modification by atmospheric agencies. The formations of this 

 part of the country are divided by him into fom-, the order from below 

 being granite, trap or basalt, sandstone and gravel. In the last. 

 Dr. Adam says, the diamond mines are situated, and he gives an account 

 of the method by which the gems are extracted. Information is also 

 afibrded about the soils, but the author falls into the mistake made by 

 other observers of separating the (Bundair) limestone fi'om the Vindhyans, 



, * Journal Asiatic Society, Bengal, Vol. XI, p. 392. 



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