THE 



(QUARTERLY JOURNAL 



GEOLOGICAL SOCIETY OF LONDON, 



EDITED BY 



THE ASSISTANT-SECRETARY OF THE GEOLOGICAL SOCIETY. 



Quod si cui mortalium cordi et curse sit non tantum inventis heerere, atque iis uti, sed ad ulteriora 

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

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

 — Novum Organum, Prcefatio. 



VOLUME THE FIFTY-NINTH. 

 1903. 



LONDON : 

 LONGMANS, GREEN, AND CO. 



PARIS : CHAELES KLINCKSIECK, 11 RUE DE LILLE. 

 Q^\KS IN$ty/r^5**0 AT THE APARTMENTS OF THE SOCIETY, l 9 { 1 H » 



ACTION M- ^ 



