of the woman as wearing a red dress as most conclusive confirmation of the maid's testimony and a final proof, not that Mrs. Eldredge was trying to mislead you, but that she was telling the truth as well as she could. For it is a common psychological fact that in a hysterical condition red is the color most commonly seen subjectively; the sensation of red not only persists in hysteria, when other color sensations disappear, but it is common to have it take the place of another color, especially violet. It was discovered and recorded over thirty years ago that, in excessive excitability known psychologically as hyperæsthesia, all colors are lifted in the spectrum scale and, to the overexcited retina, the shorter waves of violet may give the sensation of the longer ones producing red. So what to you seemed an intentional contradiction was to me the most positive and complete assurance of your wife's honesty.
"And finally, to be consistent with this condition, I knew that if her state was due to expectation of harm to herself or the child from any unusually large, dark woman, she would see the woman in her excitement, as large and dark. For it is one of the commonest facts known to the psychologist that our senses in excitement can be so influenced by our expectation of any event that we actually see things, not as they are, but as we expect them to be. So when you told me that Mrs. Murray answered the description given by Mrs. Eldredge, all threads of the skein had led to Mrs. Murray.
"Now, as it was clear to me that Mrs. Murray herself had used Miss Hendricks' easy suggestibility
