CANADA 
DEPARTMENT OF MINES 
Hon. Charles Stewart, Minister; Charles Camsell, Deputy Minister 
NATIONAL MUSEUM OF CANADA 
W. H. Collins, Acting Director 
BULLETIN No. 57 
A Transverse Poly conic Projection for 
General Maps of Canada 
C.-O. Sen^cal 
Geological Survey, Canada 
OTTAWA 
F A. ACLAND 
PRINTER TO THE KING’S MOST EXCELLENT MAJESTY 
1929 
Price, 6 cents 
