SHELLS As EVIDENCE OP 



THE MIGRATIONS OF 



EARLY CULTURE 



yJ 



BY 



J. WILFRID JACKSON, F.G.S. 



Assistant Keeper Manchester Museum 

 Honorary Librarian of the Conchological Society of Great Britain and Ireland 



MANCHESTER 



AT THE UNIVERSITY PRESS 



12 LIME GROVE, OXFORD ROAD 



LONGMANS, GREEN & CO. 



LONDON, NEW YORK, BOMBAY, &-c. 

 I917 



d 



