Vol. LV. 



Paet 1. 



PEBEUARY Ist, 1899. 



No. 217. 



THE 



QUARTERLY JOIJ^RNAL 



GEOLOGICAL SOCIETY 



EDITED BY 



THE ASSISTAKT-SECRETARY. 



[With Twelve Plates, illustrating Papers l)y Mr. E. T. Newton, ^ 

 Messrs. T. W. E. David & E. F. Pittman, Dr. G. J. Hinde, \ 

 and Mr. W. W. King.] ^ 



LONDON : 



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