I T may be said of Purgatory that if it did not exist it would have to be created, so eminently is it in accord with the dictates of reason and common sense. The natural instinct of travellers at their journey's end is to seek for rest and change of attire. Some are begrimed with mud, others have caught the dust of a scorching summer day; the heat or cold or damp of the journey has told upon them and their attire. Perhaps, even, the way has made them weary unto sickness, and they crave for an in