OF WESTERN AND CENTRAL INDIA, lo 



the deposits of Berar and the Nizam's territories^ the second those of 

 Bombay Island^ the third those of the neighbourhood of Nagpoor, 

 and the fourth those of the Nerbudda Valley. Dr. Carter and Mr. 

 Hislop agree generally in their views of the mode in which these rocks 

 have been formed; Mr. Medlicott, with whom I entirely agree, 

 differs from them. Dr. Malcolmson did not enter into theoretical 

 speculations. 



The rocks of the Island of Bombay have recently been re-described 

 by my colleague Mr. Wynne,"^ who has shown that the views originally 

 held by Mr. Clark, Dr. Buist, and others of the interstratification of the 

 sedimentary rocks with the trap beds agree far better with the facts than 

 Dr. Carter^s very ingenious, but somewhat complicated hypothesis of the 

 deposition of the freshwater beds in the first place, and of their subse- 

 quent disruption by successive volcanic outbursts. I entirely coincide 

 with Mr. Wynne's opinions in this matter. I think there can be no 

 question that the rocks of Bombay consist of a number of successive 

 flows of lava difiering in mineral composition, and that sedimentary 

 beds were deposited, probably in lakes, upon several different flows in 

 succession. 



The majority of the fossils described by Dr. Carter from the Bom- 

 bay intertrappean formation were obtained from the sedimentary bed 

 which underlies the basalt of Malabar hill, the thickest bed known to 

 be intercalated with the traps anywhere. The most important fossils are 

 Amphibian or Reptilian; they include a frog {Rana pusilla, Owexx) 

 closely allied to existing species, and a tortoise, besides entomostraca, 

 insects, some obscure remains of moUusca, and plants. 



* Memoii-s Geol. Siu'v. Ind., Vol, V, Art 3, 



( 119 ) 



