Hoy! shout again," he cried as he plodded on cautiously, with his feet sometimes sinking in the bog, sometimes finding it pretty firm.
But there was no answer; and though as far as was possible Dick walked in the direction of the sound, the guidance was of the most unsatisfactory nature, and at the end of a minute or two they listened again.
"It must be that Thorpeley regularly bogged," said Dick at last, and a curious shiver ran through him.

"I hope he hasn't sunk in." "He couldn't," said Tom.

"I know this part.

It's all firm ground between the water and the track to the sea." "I can't quite make out where we are," said Dick, staring about him.
"I can.

There's the big alder clump, and beyond it there's the river wall." [Mud embankment.] "So it is.