

THE 



QUARTERLY JOURNAL 



GEOLOGICAL SOCIETY OF LONDON. 



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EDITED BY 



THE ASSISTANT-SECRETARY OF THE GEOLOGICAL SOCIETY. 



VOLUME THE SIXTH. 

 1850. 



PART THE FIRST. 

 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



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LONDON: \ ^^ ^^T;"^ 



LONGMAN, BROWN, GREEN, AND LONG]\Otk|j[4/IOfJJL ^^^^ 



PARIS:— FRIED. KLINCKSIECK, 11 RUE DE LILLE; BAUDRY, 9 RUE DU C0q7~ 

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



NEW YORK :— WILEY AND PUTNAM, l6l BROADWAY. 



SOLD ALSO AT THE APARTMENTS OF THE SOCIETY, 



