PROCEEDINGS 
OF THE 
YORKSHIRE SS.o^x-h) 
Geological and Polytechnic 
Society. 
NEW SERIES, VOL. XII. 
1891-1894. 
WITH TWENTY-FOUR PLATES. 
EDITED BY 
WILLIAM LOWER CARTER, M.A., F.G.S. 
AND 
WILLIAM CASH, F.G.S. 
HALIFAX : 
Whitley & Booth, Printers, Crown Street. 
1895, 
