The surgeon looked at Karl uneasily. "He has lost a quarter of his blood," he murmured.

"Well?" asked Helen.

The doctor bent his head.

"Doctor," cried Helen, "don't tell me there is no hope: it is always said that people quickly recover lost blood."

"Yes," replied the doctor, "when he can eat. But never mind, a doctor must do all he can. Can you help me?" he asked Benedict.

"Yes," he answered, "I have some idea of surgery."

"You will leave the room, won't you?" the surgeon asked Helen.

"Not for the world!" she cried, "no, no, I will stay to the end."

The operation on the arm was finished with a cleverness which astonished Benedict.

"Now," said the doctor, "ice water must be slowly dropped on that arm!"