The woman who had come in through the open french win¬dows from the terrace was a nun ù tropical white, a small woman, not much over five feet in height with clear, untroubled eyes, not a wrinkle to be seen on that calm face in spite of her age which must have been fifty at least! It would be like trying to find what was wrong with a single leaf on a single tree in a vast forest where all the trees and all the leaves looked pretty much alike, except that this one leaf was smaller and humbler than most?