Looking in the direction from whence the sounds had apparently proceeded, which was just below where their boats were pulled up, he could just manage to make out some bulky moving object; then the whipping of what seemed to be a discolored sail caught his eye, and he understood.

Of course, it must be some boat, possibly belonging to oystermen who plied their trade out on the bay, close to which they now found themselves.

Coming into the creek, which was possibly their regular harbor for night refuge, and discovering the fire as well as the boys, they had blown a fog horn just in the spirit of frolic, to give the boys a scare.

Both men were laughing now at the success of their scheme, and one of them called out, with the idea of calming the bunch before they took to shooting, in their excitement, as greenhorns were liable to do under such conditions.

"Hey, there! it's all right, boys; we're just oystermen, ye see, an' meanin' to come ashore to jine ye, 'fore we goes home. Got a dock a leetle ways up-creek. So hold yer guns, boys; no harm done, I reckons!"

The sloop was run up on the sandy shore and both men jumped off. They proved to be honest chaps, and soon the boys were quite relieved of their first suspicious sensation at sight of such rough customers.

These fellows had seldom looked on such dainty tricks as the three little motor boats. Accustomed to heavy craft, they shook their heads when they heard how Jack and his chums expected to make far distant Florida in such frail boats.

"Never kin do it, boys, an' I knows it," declared the taller fellow.

"But ye got the grit, all right, I reckons," added the other.

"We expect to meet up with lots of trouble on the way," said Jack; "but then we've been through some experience, and know a little about managing these things. Often a boat like mine will live in a sea that would swamp a more clumsy craft. A canoe rides the waves like a duck, where a rowboat would fill and sink, being logy."