Bulletin of the Museum of Comparative Zodlogy 
AT HARVARD COLLEGE. 
Von, XL. 
GEOLOGICAL SERIES, Vol. VI. No. 4. 
POSTGLACIAL AND INTERGLACIAL (?) CHANGES OF LEVEL 
AT CAPE ANN, MASSACHUSETTS. 
By K.-S: EArr: 
WITH A NOTE ON THE ELEVATED BEACHES. 
By J. B. Woopwortu. 
Witn THIRTEEN PLATES. 
CAMBRIDGE, MASS., U.S. A.: 
PRINTED FOR THE MUSEUM. 
SEPTEMBER, 1903. 
