Contents

09 August 1974
Vol 185, Issue 4150

About The Cover

Plastic particles collected in surface waters over a broad area of the north-west Atlantic Ocean. The background is the 0.947-millimeter nylon mesh used in the neuston collecting net. See page 491. [Harold L. Pratt, National Marine Fisheries Service, Narragansett Laboratory, Narragansett, Rhode Island]