



THE 



QUARTERLY JOURNAL 



OF THE 



GEOLOGICAL SOCIETY OF LONDON. 



EDITED BY 



THE ASSISTANT-SECRETARY OF THE GEOLOGICAL SOCIETY. 



Quod si cui mortalium cordi et curie sit non tantum inventis hserere, atqu« iis uti, sed ad ulteriora 

 penetrare ; atque non disputando adversarium, sed opere uaturam vincere : denique non belle et probabiliter 

 opinari, sed certo et ostensive scire; tales, tanquam veri scientiarum filii, nobis 'si videbitur) se adjungant. 

 — Novum Orgnnum, Preefatio. 



VOLUME THE SIXTIETH. 

 1904. 



LONDON : 

 LONGMANS, GREEN, AND CO. 



PAEIS: CHARLES KLINCKSIECK, 11 EUE DE LILLE. 



SOLD ALSO AT THE APARTMENTS OF THE SOCIETY. 



-MDCCCCTV. 



i<KIU 



