the idea that one has long held of a person is apt to stop one's eyes and ears; my mother, for three whole years, had no more noticed the salve with which one of her nieces used to paint her lips than if it had been wholly and invisibly dissolved in some clear liquid; until one day a streak too much, or possibly something else, brought about the phenomenon known as super-saturation; all the paint that had hitherto passed unperceived was now crystallised,
