The tower was as high as Jerry's head, and large enough for four boys to stand upon comfortably. In the centre was a fir-tree from which the boys had trimmed every branch, until it was like a flag-staff.
"Some time we are going to have a flag of our own to fly atop there," said Jerry with pride.
"I've got a good-sized flag over in camp that you may have; it will do till you can get a bigger," said Walter Martin.
"What else do you do besides build stone things?" asked Dave curiously.
"Oh, lots of things."
"You fish off the rocks, I suppose."
"Yes, plenty of fish round here. We go off in the boat with father, too, to tend the lobster-pots."
"Lobster-pots! what are they?" asked Joe.
"What you catch lobsters in. Didn't you ever see a lobster-pot? There's some there on the grass."
"What! these cages? How do you catch them with these?"