"But this is such a big beginning," persisted Paul; "it means shutting yourself up for six months in an atmosphere of sickness, and possibly of death; and this is a tremendous undertaking for any woman, especially for one who has hitherto had all the wheels of life oiled for her."

"But think of Joanna."

"I am trying not to think of her, till I have done thinking of you. Of course my first impulse was to thank you on my knees for thus coming to our help; but you must be considered as well as Joanna; and I am not sure that I should be justified in letting you make so great a sacrifice for any one who has after all no claim upon you." And Paul got up from his seat and looked out of the window, so that Isabel might not see his face.

Isabel's eyes grew wistful. "Please don't stop me now that at last I am trying to be good."

"Heaven forbid! But the path of duty is not easy walking, and I would carry you over the rough places if I could; for the way is thorny and your feet are very tender," replied Paul gently.

"Nevertheless I am going."

"And I cannot help you, much as I should wish it. If Joanna became much worse I should come out to her once; but I could not afford the time to stay with her long, as the unavoidable expenses of her illness will make me specially busy all this winter."

"Nevertheless I am going," repeated Isabel.

"You have definitely made up your mind?"

"Yes."