170 



160 



150 



140 



130 



120 



80 



75 



70 



6 65 



^ 60 



o 



i 55 



■Q 



E 

 3 50 



45 



40 



35 



30 



25 



20 



15 



10 



5 



Population before fishing. 



Removal by 19 49 

 bullrake fishery. 



^l5 



Population after 

 19 49 fishing 



m 



20 25 



30 35 40 45 50 55 60 65 70 

 Length of Clama In Millimeters 



Fl*. 10. Sl88 dtstrlbutlOTi of clans In 500 square feat of bottOM from 

 bullraked a rea before and after 19U9 flshlic. U^forer.ce 

 between dotted and solid lines shows removal by hullrak" 

 fishery. Population after fishing la based on" 2B clanshell 

 bucket samples taken Dec. 15, I9I49, Increased to 100 for 

 comparlBon with Figure H. Data smoothed by moving averace 

 of 3'«. 



80 85 



