y 



THE 



QUARTERLY JOURNAL 



OF THE 



GEOLOGICAL SOCIETY OF LONDON. 



EDITED BY 



THE ASSISTANT-SECRETARY OF THE GEOLOGICAL SOCIETY. 



Quod si cui mortalium cordi et curae sit non tantum inventi3 haerere, atque iis uti, sed ad ulteriora 

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

 opinari, sed certo et ostensive scire ; tales, tanquam veri scientiarum filii, nobis (si yidebitur) se adjungant 

 —Novum Orrjanum, Prcpfatio. 



VOLUME THE SEVENTIETH. 

 1914. 



LONDON : 



LONGMANS, GREEN, AND CO. 



PAEIS: CHARLES KLINCKSIECK, 11 RUE DE LILLE. 

 SOLD ALSO AT THE APARTMENTS OF THE SOCIETY. 



MCMXIV. 



