m 



<)3 



Vol. LXXV. -no. 300. 



Pari- 4. 



THE 



QUARTERLY JOURNAL 



GEOLOGICAL SOCIETY 



f NOV 9 1920 



^SSoual M 



THE PERMANENT SECRETARY. 



EDITED BY 



; [With Seven Plates, illustrating Papers by Prof. S. J. Shand 

 and Dr. A. Gilligan.] 



August 17th, 1920. 



LONDON : 

 LONGMANS, GREEN, AND CO 



PARIS:— CHARLES KLINCKBIECK, 11 UUE DE LILLE. 

 80LD AL80 AT THE APARTMENTS OF THE SOCIETY. 



Price Seven Shillings and Sixpence. 



