﻿Vol. 64.] AND PHYSIOGKAPHr OF WESTEEN LIBERIA, 317 



The Author, after thanking the Fellows for their kind reception 

 of his paper, said, in reply to the President, that without additional 

 knowledge on his part of the Dharwar Beds of India, and also of 

 the hsematite-schists of Liberia, he could not venture on a parallel 

 between them. Answering Dr. Evans's question as to the origin of 

 the valley between the Po and Boporo ranges, he said that when in 

 Liberia he concluded that the valleys were due to selective erosion^ 

 but that he had not been able satisfactorily to determine the existence 

 of softer rocks along them. The hanging valleys, he thought, were 

 probably due to rejuvenation, rather than to variation in rainfall ; 

 but until the ground near the sources of the St. Paul had been in- 

 vestigated, no certain conclusion could be reached. ISTo Cretaceous 

 beds had been discovered by him in Western Liberia, although he 

 thought it possible that such might be found on the eastern frontier 

 and on the north-western border of the Republic ; but of such an 

 occurrence no satisfactory evidence was available. 



