While, following her graduation, she was taking a course in district nursing, giving freely of her new powers to the poor and suffering of a great city, and taking, and passing, the State examination which gave her the right to place the epigrammatic letters "R.N." after her name, something was happening more than three thousand miles away, of which she had no inkling, and yet which was closely linked with her existence. Donald had, indeed, written in a manner to minimize his illness, which had been a prolonged and serious one; so much so that he had, greatly against his will, finally come to realize the necessity of his taking a rest from his unremitting toil, and he had agreed to return home for a vacation as soon as he should be well enough to make the long trip. Depressed by his wholly unaccustomed weakness the doctor sat, a convalescent in his own hospital in Toul, one stifling July day. To his physical debility was added the dragging distress of mind which comes at times to those who are far away and receive no word from home. No letters had reached him for weeks. Removed from the sphere of the abnormal activity which had been his, and with nothing to do but sit and think, Donald had, for some time, been examining his own heart with an introspective gaze more searching than ever before. He felt that he had been, above the average, blessed with happy relationships, deep friendships and a highly trained ability to serve others--and he knew that he could honestly say that he had turned this to full account. Besides, he was betrothed to a beautiful woman whom many coveted. When his mind reached Marion Treville in its consideration, it stopped to build a dream castle around her, a castle not in Spain, but in America. He had earned the right to rest beside the road awhile, and enjoy the good things of life. Marion was waiting for him at home, and whatever doubts had, at one or another time, entered his mind as to their perfect suitability, one for the other, they had long since been banished. Distance had lent its enchantment, and he had supplied her with the special virtues that he desired. His was a type of mind which held to one thought at a time, and he had always possessed a fixedness of purpose of a kind well calculated to carry through any plan which that mind conceived. Combined, these characteristics made a form of egotism, not one which caused him to overrate himself, but to plough ahead regardless of the strength of the possible opposition. When he returned to America he would marry Marion Treville immediately. No other idea had seriously entered his mind since they had plighted their troth; they had not been quite ready before, that was all, he told himself.