Louis took his foster-brother on one side.

"Swear to me to protect that child when I am no longer here to do so."

"I swear it!" Valentine said in a broken voice.

Doña Angela heard the words. She smiled sadly as she wiped away a tear.

"Now, brother, there is another oath I must obtain from you."

"Speak, brother."

"Swear to do what I ask you, whatever it may be."

Valentine looked at his foster-brother: he saw such anxiety depicted on his face that he let his eyes fall.

"I swear it!" he said in a hollow voice.

He had guessed what Don Louis was about to demand of him.