some day down by the Sea.

For a long time Marmaduke trotted alongside the boy and the mules, not
realizing at all how far he had come. Once or twice he looked back at
the "Mary Ellen" and the Man With the Red Shirt and the Pipe, and the
little house on the deck. He wished he could go on board and steer the
"Mary Ellen," and play in that little house, it looked so cute. The
Round Fat Rosy Woman was coming out of it now with a pan of water
which she threw in the Canal; and the little children were running all
over the deck, almost tumbling in the water.

After quite a journey they drew near the Lock, a great place in the
Canal like a harbour, with two pairs of gates, as high as a house, at
each end, to keep the water in the Lock.

Outside one pair of gates the water was low; outside the others, which
were near him, the water was high; and Marmaduke knew well what those
great gates would do. The pair at the end where the water was high
would open and the canalboat would float in the Lock and rest there
for a while like a ship in harbour. Then those gates would shut tight,
and the man who tended the Lock would open the gates at the end where
the water was low. And the water would rush out and go down, down in
the Lock, carrying the boat with it until it was on a level with the
low part of the Canal. And the boat at last would float out of the
harbour of the Lock and away on its journey to the Sea.

But all this hadn't happened yet. There was much work to be done
before all was ready.

Now the boat had stopped in front of the high pair of gates. The Man