The stranger raised his eyebrows, but without opening his eyes perceptibly wider.

“You insist on continuing the parallel?” he asked. “I only said ten years of life; if you die you escape me, but you lose your own chance. What should I want with a dead man? The loss would be as much mine as yours.”

“If you can guarantee, as you said, that I should be in danger but should not be struck down, perhaps you can promise me that I shall not die till our contract is fulfilled on both sides?”

“My dear friend, one would need to be deathless one’s self to make such a promise. Even a doctor could only promise life provided such and such circumstances were certain.”

“If you can dispose of Count Stromwael’s will and property,” said Nicholas doggedly, “you can ensure me ten years’ life.”

“Is your life dearer to you than your success, then?”

“No; but the latter depends on the former, and if you must hedge in business by conditions, I must be sure that I do not give you in advance all you want without being sure of my reward at the end.”

“I should not have expected so much foresight in you; I respect you for it. I will see that you have this assurance, but how do I know whether you will believe in it? You see you are so much shrewder than ordinary enthusiasts that I may be taking a spy or a critic into my service.”

“I have never thought about business or guarantees before, because I care for nothing but the success of my organ, and only that would have made me eager to bind you to your promise,” said Nicholas, still uneasily; “but since you only ask ten years’ service, I think I may safely say yes.”

The stranger smiled again, as oddly as before, and drew out a roll of parchment from a little bag. “According to tradition, you should sign this with your blood,” he said, “but I shall be quite content if you sign it with common ink. Here is a horn and a pen; only write your name. But first read the bond.”