She faintly shook her head. "You could not be."

"It is true that--that--the period has not arrived, perhaps for either of us, when we had contemplated such a friendship might begin. But we must waive that: necessity alters cases. Sara, let me serve you! I ask it in the name of Dr. Davenal. Surely you can have no objection?"

Her eyes were swimming in tears as she looked straight before her on the gravel path. "In anything but this I should only be too thankful. Sometimes I feel that I am left without a friend in the wide world."

"Why not in this?"

"Because it is a matter that I may not confide to any one. It is"--she lowered her voice--"a secret."

"I will be true as steel. No matter what dishonour may be in it, it shall be held sacred within my breast; never betrayed, never spoken of. I judge that it is not a pleasant secret; therefore I use the word dishonour. It is more fitting that I should be engaged in this matter than you."

For a single moment the temptation came over her to tell him what it was: just as the temptation to tell him the secret connected with Lady Oswald's death had once momentarily assailed Dr. Davenal. But it passed away almost with the thought. She could not speak of her brother's fault; she could not. Neither might she delegate to another the last directions left to her by her father. Safely grasped in her hand she held those sealed papers left by Dr. Davenal; how could she transfer them even to Oswald Cray?

"I wish I could tell it you!" she said in a tone of pain. "But I cannot; it is not possible. You will have guessed that this is not my own secret. It is a charge that was left to me by my dear father when he was dying: and I am obliged to fulfil it. He had no one to leave it to but me."

"Your brother being away. I can understand so much. Suffer me to stand to you, in this, in your brother's place. I am sure Captain Davenal would wish it."

The faint colour of dread came into her cheeks as she thought how far he would be from wishing this discussed with Mr. Oswald Cray. "I can't tell it," she murmured.