'6o.h4x 



Gy-COU 



THE 



QUARTERLY JOURNAL 



GEOLOGICAL SOCIETY OF LONDON. 



EDITED 11 Y 



THE ASSISTANT-SECRETARY OF THE GEOLOGICAL SOCIETY. 



Quod si cui mortalium eordi et curie sit non tantum inventis haerere, atque iis uti, sed ad ulterior* 

 penetrare; atque non disputando adversariurn, sed opere naturam vincere ; denique non belle et probabiliter 

 opinari, sed certo et ostensive scire; tales, tanquam veri scientiarum filii, nobis (si videbitur) seadjungant. 

 — Novum Organum, Prcefatio. 



VOLUME THE SIXTEENTH. 



1860. 



PART THE FIRST. 



PROCEEDINGS OF THE GEOLOGIp^C^fiCIETY. 



Society. 



28M 2>4-l, 



LONDON: ^N^f fj] 



LONGMAN, GREEN, LONGMANS, AND ROBERTS. 



PARIS:— FRIED. KLINCKSIECK, II RUE DE LILLE; BAUDRY, 9 RUE DU I'uy. 

 PRES LE LOUVRE; LEIPZIG, T. O. WEIC.EL. 



SOLD AL90 AT THE APARTMENTS OF THE SOCIETY. 

 MDCCCl.X. 



