Contents

16 September 1988
Vol 241, Issue 4872

About The Cover

Nauplius larva (stage VI) of the intertidal barnacle Balanus glandula photographed with Nomarski interference contrast illumination. Upwelling in the California Current prevents these ocean-going larvae from returning to shore and thereby greatly affects the abundance of barnacles in the rocky intertidal zone. See page 1460. [Photo by K. Miller, Stanford University, Stanford, CA 94305]