LERD 



40 



!43«HH« 



43 f y3' .- 



H3»42' .. 



!43»U1 ■ .. 



143* 40' .; 



43'39' .. 



43*38' 



U3»37' 



70' 16' 



Fig. 



70M5* 70°m* 70°13' 70ME' 70M1* 70M0' 70* 8" 



16. The distribution of lead (ppm dry weight) in 

 the surficial sediments of Casco Bay, Maine. 



