TRANSACTIONS 



OF THE 



GEOLOGICAL SOCIETY 



OF LONDON. 



SECOND SERIES. 



VOLUME VI. 

 PART THE FIRST. 



Quod si cui mortalium cordi et curae sit, non tantum inventis hacrere, 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 scientiaruni 



filii, nobis (si videbitur) se adjungant. 



Novum Organum, Prafatio. 



LONDON: 



PRINTED BY R. AND J. E. TAYLOR, RED LION COURT, FLEET STREET. 

 SOLD AT THE APARTMENTS OF THE GEOLOGICAL SOCIETY, 



SOMERSET HOUSE. 



1841. 



