of human skill,' I heard a second voice reply; 'but consider, dear doctor, if that man there were to expire under our hands—what then?'
"'Impossible!' was the quick reply. 'It is bound to succeed, and even if it did not, he will die a glorious death in the interests of science; whilst, if we were to let him go, he would sooner or later fall into the hands of the hangman.'
"I shuddered from head to foot."
"I could not even see the two men, yet their conversation was, doubtless, about me; and, hearing it, I shuddered from head to foot. They were proposing some dangerous operation on me, not for my benefit, but in the interests of medical science!
"At any rate, I thought, they won't undertake such a thing without my sanction; and what, after all, was their intention? It must be something terrible, for they had already mentioned the possibility of my succumbing. I should soon know the fearful truth, for, after a short pause, they continued—
"'It has long been acknowledged that the true source of life lies in the blood. What I wish to prove, dear Langner, is this. Nobody need die from pure loss of blood, and yet such cases occur only too often, whilst we must all the time be in possession of means to renew this highly important sap of life, and thus avoid a fatal result. We read of a few, but only a few, cases of a man who for some reason or other has lost so much blood that his death appeared inevitable, if some other noble-hearted man had not offered his own blood, in order to let it flow from his veins into the veins of the dying man. As you are aware, this proceeding has always had the desired effect. I consider it, however, a great mistake to deprive a fellow-being of necessary blood, for the one thereby only gains life and strength at the cost of another, who offers himself for an always dangerous sacrifice.'
"'Yes, I do not think that right either,' replied Dr. Langner. 'And, moreover, how seldom is a man found at the critical moment, ready to submit himself at once to such a dangerous loss of blood.'
