Vol. LXXIII. No. 290. 



Part 2. 



THE 



QUARTERLY JOURNAL 



OF THE 



GEOLOGICAL SOCIETY 



EDITED BY 



THE PERMANENT SECRETARY. 



{ [With Twelve Plates, illustrating Papers by Mrs. Longstaflf, 

 \ Mr. L. M. Parsons, and Mr. F. Dixey & Prof. T. F. Sibly.] 



August 20tli, 1918. 



LONDON . 

 LONGMANS, URKEN, AND CO. 



PARIS:— CHARLES KLINCK8IECK. 11 RUE DE LILLE. 

 SOLD ALSO AT THE APARTMENTS OF THE BOCIETY. 



Price Five Shillmgs, 



