v'  \ 
Vol.  XLIX. 
Part  1. 
FEBRUARY  1st,  1893. 
No .  193. 
THE 
QUARTERLY  JOURNAL 
OF  THE 
GEOLOGICAL  SOCIETY. 
EDITED  BY 
THE  ASSISTANT-SECRETARY. 
LONDON : 
LONGMANS,  GREEN,  AND  CO. 
PARIS FRIED.  KLIN CKSIECK,  11  RUE  EE  LILLE ;  F.  SAVY,  24  RUE 
HAUTEFEUILLE.  LEIPZIG :  T.  O.  WEIGEL. 
BOLD  ALSO  AT  THE  APARTMENTS  OF  THE  SOCIETY. 
Price  Five  Shillings, 
