12 MALLET, VINDHYAN SERIES. 



several erroneous conclusions, as, under the head ' Kuttra limestones' are 

 included, besides others in distant parts of India, that of Bundeikund 

 (Bundair), Rotasgurh (lower Vindhyan), and Jubbulpur (metamorphic) , 

 as well as the white crystalline marble of India generally. The Punna 

 (Rewah) sandstone, that of the second plateau, is confused with that of 

 Jaquemont's third range, the Bundair, and also with the Rotasgurh rock, 

 which is that of the first, the Tara or Kymore. With the Punna sand- 

 stone are also classed strata in remote parts of India, some of which 

 are known to belong to quite a different age, while the ^diamond 

 conglomerate,' a subordinate bed of the Kuttra shales, is represented to 

 overlie them and the Punna sandstone, and to be made up in part of 

 theii' debris. 



Mr. A. Schlagintweit has furnished a few observations* on these 

 A s hi rocks which, with the coal bearing series of Bengal, 

 gintweit. ^nd strata in different parts of Southern India, he 



includes in one formation, which he conjectures may be oolitic. 



The attention of the Geological Survey was first dii-ected to Central 



India in 1854, and in 1856 Mr. Oldham gave to the 

 1856, Mr. Oldham. 



Asiatic Society in Calcutta a summaryf of the chief 



results obtained, which, as regards the sandstones of Bundeikund, showed 



that this great group was altogether of a difierent character and of a 



more ancient epoch than the beds associated with the coals of Bengal and 



of Central India, but that from the absence of organic remains there 



was as yet no evidence on which to base a reference of it to any established 



epoch of Em'opean geology ; that the names hitherto assigned to this 



series and its sub-divisions being based on erroneous views of position, 



and therefore tending to erroneous conclusions, must be abandoned. 



Dr. Oldham, therefore, proposed the name Vindhyan for the whole 



* Magnetic Survey of India, Reports vi & vii. 



f Journal Asiatic Society, Bengal, Vol. XXV, p. 249- 



( 12 ) 



