Oviedo and Herrera both relate how they proceeded to discover this.
Urayoán, the cacique of Yagüeca, was charged with the experiment.
Chance soon favored him. A young man named Salcedo passed through his
village to join some friends. He was hospitably received, well fed,
and a number of men[17] were told to accompany him and carry his
luggage. He arrived at the Guaorába, a river on the west side of the
island, which flows into the bay of San German. They offered to carry
him across. The youth accepted, was taken up between two of the
strongest Indians, who, arriving in the middle of the river, dumped
him under water--then they fell on him and held him down till he
struggled no more. Dragging him ashore, they now begged his pardon,
saying that they had stumbled, and called upon him to rise and
continue the voyage; but the young man did not move, he was dead, and
they had the proof that the supposed demi-gods were mortals after all.

The news spread like wildfire, and from that day the Indians were in
open rebellion and began to take the offensive, shooting their arrows
and otherwise molesting every Spaniard they happened to meet alone or
off his guard.

The following episode related by Oviedo illustrates the mental
disposition of the natives of Boriquén at this period.

Aymamón, the cacique whose village was on the river Culebrinas, near
the settlement of Soto Mayor, had surprised a lad of sixteen years
wandering alone in the forest. The cacique carried him off, tied him
to a post in his hut and proposed to his men a game of ball, the
winner to have the privilege of convincing himself and the others of
the mortality of their enemies by killing the lad in any way he
pleased. Fortunately for the intended victim, one of the Indians knew