Then he was rowed off into the darkness to toss about till the steam pilot-boat New York should happen along and pick him up with her searchlight.

“Good-bye, old New York!” cried both boys, seized with a common instinct and a most unmanly catch at their throats at the same instant. From the chart house above them eight bells rang out. Already the Aztec was beginning to lift with the long Atlantic swell. The Boy Aviators’ voyage toward the unknown had begun.

CHAPTER II.

THE STORM-CLOUDS GATHER.

Señor Don Alfredo Chester, as the boy aviators’ father was known in Nicaragua, sat in a grass chair on the cool patio of his dazzlingly whitewashed hacienda on his plantation of La Merced. He thoughtfully smoked a long black cigar of native tobacco as he reclined. The lazy smoke from his weed curled languidly up toward the sparkling sapphire sky of the Nicaraguan dry season, which had just begun; but the thoughts of Planter Chester did not follow the writhing column.

Nor had he in fact any eye for the scene that stretched for miles about him, although it was one of perfect tropic beauty and luxuriance. Refreshed by the long rainy season which here endures from April to December everything glittered with a fresh, crisp green that contrasted delightfully with the occasional jeweled radiance of some gorgeously-plumaged bird flashing across a shaft of sunlight like a radiant streak of lightning. These brilliant apparitions vanished in the darker shades of the luxuriant growth like very spirits of the jungle.

The dense tangle of rank greenery that surrounded the plantation, like a conservatory run wild, held, however, far more dangerous inhabitants than these gaudy birds. In its depths lurked the cruel but beautiful ocelots—prettiest and most treacherous of the cat family. Jaguars of huge size,—and magnificently spotted,—hung in its tree limbs, on the lookout for monkeys, fat wild hogs, or an occasional philosophic tapir. And here too in the huge trees, whose branches afforded homes for a host of multi-colored orchids lurked the deadly coral snake with its vivid checkerings of red and black and the red and yellow blood snake, the bite of either of which is as instantaneously fatal as a bullet through the heart.

From where the hacienda stood—high on the side of a steep hill on whose flanks waved everywhere the graceful broad fronds of the banana—could be obtained a distant glimpse of the Caribbean, flashing a deep sapphire as it hurled its huge swells thundering shoreward. It was on this occasional gleaming glimpse far down the San Juan valley that Señor Chester’s gaze was fixed as he thoughtfully enjoyed his cigar.

It was easy to see from even a casual glance at Mr. Chester’s strong face that his boys had inherited from him in undiminished measure the keen intellectuality that showed there, as well as the vigorous nervous frame and general impression of mental and physical power that the man gave out. It was on these boys of his that his mind was fixed at that moment. They were then by his calculations about a day away from Greytown, although as the Aztec made usually a good many ports of call on her way down the coast it was only a rough guess at her whereabouts.

As he sat on his patio that afternoon Mr. Chester would have given all he possessed to have had it in his power at that minute to have been able to keep his boys in New York, but it was too late for that now.