CANADA 
DEPARTMENT OF MINES 
Hon. W. A. Gordon, Minister; Charles Camsell, Deputy Minister 
NATIONAL MUSEUM OF CANADA 
W. H. Collins, Acting Director 
BULLETIN No. 67 
Annual Report for 1929 
CONTENTS 
Pagr 
General Activities of the National Museum of Canada: W. H. Collins 1 
A Study of Branta canadensis (Linnaeus): P, A. Taverner 28 
Freshwater Mollubca from Central Ontario: F. C. Baker and A. R. Carn 41 
Distinguishing Characteristics of Algonkian and Iroquoian Cultures: W. J. Wintemberg 65 
Technical Methods in the Preservation of Anthropological Museum Specimens: D. Leechman 127 
OTTAWA 
F. A. ACLAND 
PRINTER TO THE KING’S MOST EXCELLENT MAJESTY 
1931 
LIBRARY 
NATIONAL MUSEUM 
OF CANADA 
