higher they went, probably out of sight of anyone without strong field glasses, and while they swung in a wide circle, Larry’s binoculars swept the horizon.

“Smoke!” He turned the focusing adjustment a trifle. “Too soon to signal—it may be an oil-burning steamer and not the yacht—or a rum-runner of a revenue patrol—it’s thick, black oil smoke, the sort the yacht would give—it is a small boat—yes——”

His signal, relayed through Dick and Sandy to Jeff, shifted the gently banked curve into a straighter line and swiftly the lines of the oncoming craft, miles away, became clear.

Larry verified his decision that the low, gray hull, with its projecting bowsprit, the rakish funnel atop the low trunk of the central cabin, and the yacht ensign, identified the Tramp.

The signal went forward.

Jeff, glancing back, caught Sandy’s nod.

“Now we’ll dive to where the hydroplane can see us, and the dive will signal the yacht that we’re the airplane they’ll be watching for,” Dick decided.

The maneuver was executed, ending in a fairly tight circle after Jeff had skilfully leveled out of the drop.

“Smoke was trailing over the yacht’s stern,” Sandy murmured. “Now it’s blowing off to the starboard side. She’s swinging toward us.”

Through his glasses Larry saw the hydroplane awaken the sea to a split crest of foam, saw a cascade of moiling water begin to chase her, and knew that the tiny craft was racing out to the meeting.

“All’s well!” he grinned as Dick looked back.

Dick nodded and passed the report to Sandy.

Sandy did not smile. Instead, as they swung, he scanned the sky. That was not his instructions, but it was his determined plan.

“I’ll see the amphibian Jeff was working on, nights,” he mused. “It ought to be in sight now——”

Convinced that both the hydroplane and the yacht would have located the spot on the sea where they would meet, Jeff broke the tedium of his tight circle by a reverse of controls, banking to the other side and swinging in a climbing spiral to the right.

Closer and closer together came the swift turbine propelled yacht and the 

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