

^■r£o/, ' ^ 



NH 



THE 



QUARTERLY JOURNAL 



OF THE 



GEOLOGICAL SOCIETY OF LONDON. 



EDITED BY 



THE ASSISTANT-SECRETARY OF THE GEOLOGICAL SOCIETY. 



VOLUME THE TWELFTH. 



1856. 



PART THE FIRST. 

 PROCEEDINGS OF THE GEOLOGICAL SOCIETY, 



LONDON: \ ^ 



LONGMAN, BROWN, GREEN, LONGMAN S;-Ato'R6BE]^TS. 



PARIS :— FRIED. KLINCKSIECK, 11 RUE DE LILLE; BAUDRY, 9 RUE DU COQ, 

 PRES LE LOUVRE ; LEIPZIG, T. O. WEIGEL. 



SOLD ALSO AT THE APARTMENTS OF THE SOCIETY. 

 MDCCCLVI. 



