APPENDIX. 53 



and December, 1837. In it he alludes to the Cuddapah diamond 

 mines, in the neighbourhood of which is abundance of basalt. 

 He gives also a sketch of the position of the diamond sandstone 

 of Bangnapilly, which is horizontal, vertically jointed, resting on 

 schistose beds, underlain by stratified limestone, and surmounted 

 by a diamond-bearing breccia, which is not interstratified, but is 

 a mixture of sandstone and other rocks, rounded and angular. 

 On the opposite side of the valley, according to Colonel Cullen, 

 the sandstone is replaced by a sharp ridge of trap, and on the 

 descent the schist and limestone were found to be capped by a 

 quartzose sandstone. Besides the diamond conglomerate, seams 

 of rock crystal occur, and fine white quartz charged with galena 

 and with specular, micaceous, and pyritous iron. The slates are 

 occasionally flinty or jaspideous. ■ The base of the whole is the 

 granite of the Carnatic, and this rock is penetrated by many 

 dykes of greenstone. In the diamond sandstone, magnetic iron 

 and corundum are met with. The fossils in the argillaceous 

 limestone are of fresh water origin.' 



Mr. Malcomson opposes the idea of Major Eranklin, that the 

 diamond rocks belong to the saliferous deposits of England. In 

 this part of Bundelcimd, greenstone follows the strike of the 

 so-called grauwacke in the bed of the iKerbudda Biver, and 

 basalt forms the overlying strata, another analogy with the 

 Cudgegong diamond district. 



Mr. Broderip considered the rocks to be Jurassic, and scarcely 

 distinguishable from the white Lias of Bath. 



As to the saliferous beds, Mr. Malcomson says, there is not a 

 rock formation in India from granite to recent alluvium in which 

 salt does not exist ; and he further states, that the sandstone, 

 covering 800 miles of latitude and 400 of longitude, is everywhere 

 above the limestone which Captain Eranklin calls lias. 



In 1853, Mr. Carter, in his " Summary of the G-eology of 

 India" {Bombay Asiat. Soc, 1854), also adopts the view that 

 these Bundelcund diamond rocks are Jurassic. 



D'Archiac {Progres, vii., 644) repeats Carter's statements, 

 and puts the diamond-bearing conglomerate with a note of 

 interrogation above the Punnah sandstone, and much above the 

 Carbonaceous shales of Kuttra. 



I would here wish to remark that these beds must be 

 distinguished from those which hold Glossopteris, and which 

 paralleled with the African Karoo beds, Mr. Tate (Q. J. XXIII.) 

 in 1867, considered Triassic, whilst Dr. Oldham, the experienced 

 and able Superintendent of the Greological Survey of India, 

 agrees with me in assigning them to a Palseozoic epoch. 



But inasmuch as coal may exist in the Jurassic or Triassic, as 

 well as Upper Palteozoic formations^ the proximity of a coal- 



