/7 » H « THE C* v- ^y 



QUARTERLY JOURNAL 



^^ 



GEOLOGICAL SOCIETY OF LONDON. 



EDITED BY 



THE ASSISTANT-SECRETARY OF THE GEOLOGICAL SOCIETY. 



Quod si cui mortalium cordi et curse sit non tanturn inventis hserere, atque iis uti, sed! ad] ulteriora. 

 penetrare; atque non disputando adversarium, sed opere naturara vincere ; denique;non belle et'probabiliter 

 opinari, sed certo et ostensive scire; tales, tanquam veri scientiarumfilii, nobis (si videbitur)_se adjungant. 

 — Novum Organum, Prmfatio. 



VOLUME THE SIXTY-FIFTH. 



1909. 



LONDON: 

 LONGMANS, GREEN, AND CO. 



PAEIS : CHAELBS KLINCKSIECK, 11 EUE DE LILLE. 

 SOLD ALSO AT THE APARTMENTS OF THE*SOCIETY. 



MDCCCCIX. &Z22 03 



