I wanted to find out what he meant, but Larkspur stopped him from talking and told him to shut up.

But, Dick, I feel sure they mean something, and all of you fellows better be on your guard," added Stanley earnestly.
"This is surely getting interesting," said Tom.

"First Sobber and old Crabtree promise to blow us up and now Koswell and Larkspur propose the same thing." "They must be in league with each other!" cried Sam.
"It looks that way--especially after what happened on Casco Bay," returned Dick.

And then he told Songbird and Stanley of the recent happenings near the Rovers' home, and elsewhere.
"Well, my advice is, keep your eyes wide open all the time," said Songbird.

"Those fellows are desperate--their actions show it--and they'll play you foul if they get half a chance." "And to that advice let me add something more," said Stanley.