Tom Dimsdale's duties were far from light. Not only was he expected to supervise the clerks' accounts and to treat with the wholesale dealers, but he was also supposed to spend a great part of his time in the docks, overlooking the loading of the outgoing ships and checking the cargo of the incoming ones. This latter portion of his work was welcome as taking him some hours a day from the close counting-house, and allowing him to get a sniff of the sea air--if, indeed, a sniff is to be had on the inland side of Woolwich. There was a pleasing life and bustle, too, in the broad, brown river, with its never-ending panorama of vessels of every size and shape which ebb and flow in the great artery of national life. So interesting was this liquid highway to Tom's practical mind, that he would often stand at the head of the wharf when his work was done and smoke a meditative pipe. It was a quiet spot, which had once been busy enough, but was now superseded by new quays and more convenient landing-places. All over it were scattered great rusty anchors, colossal iron chains, deserted melancholy boilers, and other debris which are found in such places, and which might seem to the fanciful to be the shells and skeletons of strange monsters washed up there by the tide. To whom do these things belong? Who has an interest in them? Of what use are they? It appeared to Tom sometimes as if the original owners and their heirs must have all died away, and left these grim relics behind them to any one who might have the charity to remove them.