...inned near the upstream end. The chain was kept from sagging down too far by seven heavy anchors, from which smaller chains ran to the main chain. These anchors was buoyed with can-buoys taken from Pilot Town . In a few months a raft formed on the upper side of this chain which reached up to the Forts, and its weight swept away the whole obstruction and went to sea, carrying the buoys with it. It was...