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Memoirs of the Auseum of Comparative Zodlogy 
AT HARVARD COLLEGE. - 
Vou. XLVI. No. 1. 
SHASONAL DEPOSITION IN AQUEO- 
GLACIAL SEDIMENTS. 
BY 
ROBERT W. SAYLES. 
WITH SIXTEEN PLATES. 
CAMBRIDGE, U. S. A.: 
Printed for the Museum, 
Frsruary, 1919. 
