Report of the Board of Shell Fish Commissioners. 



!3 



Number of "grabs" made per bour by tongmen (average) : 



Area covered by tongmen, per season (average) 



Area covered by a dredger (10-ton boat) , per season 464 acres. 



Area whicb must yield a livelihood to a dredger* 140 acres. 



*The 90.000 acres of dredging ground (carefully estimated) belonging to the 

 State must yield a livelihood to each of the 63S dredgers licensed to work on it 

 (during the season of 1907 and 1908), hence 140 acres must yield one livelihood. 



