It was within an hour of sunset when Purchase, who had been standing up in the stern-sheets of the boat, intently studying the shore of the right bank of the river for some ten minutes, gave the order to douse the canvas and stand by to ship the oars; and as he did so he waved his hand to the coxswain, who put down his helm and sheered the boat in toward what looked like an unbroken belt of mangroves stretching for miles along the bank.
