Excerpt from The Biological Bulletin, Vol. 156: February to June, 1979Subscriptions and similar matter should be addressed to the biological bulletin, Marine Biological Laboratory, Woods Hole, Massachusetts. Agent for Great Britain. Wheldon and Wesley. Limited, 2, 3 and 4 Arthur Street, New Oxford Street, London, W. C. 2. Single numbers, 38. 00. Subscription per volume (three issues), 822. 00, (this 15 $44. 00 per year for six Issues).About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.