(he/. 



{J(^ 



THE 



QUARTERLY JOURNAL 



GEOLOGICAL SOCIETY OF LONDON 



E1>ITED BY 



THE ASSISTANT-SECEETAEY OF THE GEOLOGICAL SOCIETr. 



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

 perietrare; atque non disputando adversariuni, sed opere naturam vincere; denique non belle et jiroliabiliter 

 opinari, sed certo et ostensive scire; talcs, tanquam veri scientiarum filii, nobis (si videbitur) seadjungant. 

 — 2\ovu)ti Organum, Pia/utio. 



VOLUME THE FORTY-FOURTJ 



1888. . \^^^^ '^0'; 



i^MljlO 



LONDON. ^^-fiiMj*'-'"' 



LONGMANS, GKEEN, AND CO. 



PARIS: 1 RIED. KLINCKSIECK, 11 RUE DE LILLE; F. SAVY, 24 RUE HAUTEFEUILLE. 

 LEIPZIG: T. O.WEIGEL. 



SOLD ALSO AT THE APARTMENTS OF TBE SOCIETY. 



MDCCCLXXXVIII. 



