w 



THE 





QUARTERLY JOURNAL 



OF THE 



S3 



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 ultenora 

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

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

 — Novum Organum, Prcefatio. 



VOLUME THE FIFTY-SECOND. 



1896 ^^asso 



^#» 



(* j\ug 111930 



1 JbS¥31J 



T 'OlH AL MUSe^ 



LONDON: 



LONGMANS, GREEN, AND CO. 



PARIS: FRIED. KLINCKSIECK, 11 RUE DE LILLE; P. SAVY, 77 BOULEVARD ST. GERMAIN 



LEIPZIG: T. O.WEIGEL. 



SOLD ALSO AT THE APARTMENTS OF THE SOCIETY. 



MDCCCXCVI. 



