vill CONTENTS TO VOLUME XX 
NUMBER VIII 
THE BANNOCK OVERTHRUST: A Major FAULT IN SOUTHEASTERN IDAHO 
AND NORTHEASTERN UtaH. R. W. Richards and G. R. Mansfield 
GLACIATION IN THE ‘TELLURIDE QUADRANGLE, Cotorapo. III. 
Allen David Hole 
ON THE STRATIGRAPHIC POSITION AND AGE OF THE JUDITH RIVER 
Formation. III. A.C. Peale . 
USE OF SYMBOLS IN EXPRESSING THE QUANTITATIVE CLASSIFICATION 
oF IcNEous Rocks. Whitman Cross 
THE PuHysIcaL SETTING OF THE CHILEAN BoRATE Deposits. Rollin 
T. Chamberlin . 
WATER-WORN PEBBLES IN CARBONIFEROUS SANDSTONE. William F. 
Prouty 
REVIEWS 
INDEX TO VOLUME XX 
PAGE 
681 
710 
738 
758 
763 
769 
772 
777 
