THE 



SAN FRANCISCO BAY 

 MARINE PILING SURVEY 



SECOND ANNUAL PROGRESS REPORT 



PREPARED UNDER THE SUPERVISION OF THE 

 SAN FRANCISCO BAY MARINE PILING COMMITTEE 



OF THE 

 AMERICAN WOOD-PRESERVERS' ASSOCIATION 



PUBLISHED BY THE COMMITTEE 



SAN FRANCISCO, CALIFORNIA 



JANUARY 15, 1922 



