Vol. LXXVIII. 



Part 4. 



No. 312. 



x^ 



THE 



'C-^^ft^ '■ *^\' 



<<L, 



X. 



QUARTERLY JOURNAISN 



or THE 



GEOLOGICAL SOCIETY. 



THE PE 



Decem 



[With Four Plates, illustrating Dr. F. Dixey's Paper, and one \ 

 \ Folding Table, illustrating Mr. S. S. Bucknian's Paper.] ^ 



LONDON : 

 LONGMANS, GREEN, AND CO. 



PAR] S :— CHARLES KLINCKSIECK, 11 RUB DE LILLE. 

 SOLD ALSO AT THE APARTMENTS OF THE SOCIETYj. 



Price Seven Shillings and Sixpence, 



