'Then I must return to my uncle, Harry,' said Carlo. 'I promised to go to the Corps du Garde after I had given up my letter; but do not wait for me, for now is your chance of escape.'

'He does not want you now, Señor Carlo: he died at his post as a brave soldier should. I will tell you about it presently, for now we have not a moment to waste: if you are found, or indeed if I am found helping you, we shall both be shot without more ado, for the men are in wild excitement.'

Carlo was speechless. The whole events of the last twelve hours seemed too terrible to believe, and he followed Harry in total silence. The latter, having now reached the bank of the river, was looking eagerly about for a boat.

'Where can we go if you find a boat?' said Carlo at last very sadly. 'It would be better for me to stay and die with my uncle.'

'No; indeed, I am sure he meant you to be saved by his sending you down here; he must have known when he did so that all was lost, and the letter to the officer was an excuse to induce you to leave him.'

'But my Aunt Elena--what will become of her? Alack! Heaven is altogether against us!'

'Do not distress yourself about her: she is of too great importance to come to any harm; they will make her pay a heavy ransom--and, anyhow, they will treat her well till Captain Morgan comes. Look, Señor, there is a small boat with one Indian in it. Have you any gold about you? We might perhaps bribe him.'

But Carlo was penniless; only, being able to make himself understood, he began trying to strike a bargain for the canoe, which appeared now their only chance of safety.

The fort was quite evacuated, and so terrified were the Spaniards now escaping up the river, that, in spite of signals from Carlo, not one would return. So, after some delay, during which Harry became every minute more impatient, knowing how great the danger was, the boys squeezed themselves into the small canoe, and, crouching down, bade the Indian paddle out to sea.

For a long time Carlo lay there too much distressed to speak; but happily Harry had all his senses about him, and had seized a pair of small oars left behind by the fugitives. Very soon he noticed that they had drifted too near the pirate ships, and that they were discovered, for Harry's keen eyes at once noticed a slight stir on board.