"On the contrary, to my mind nothing could be more clear. Let me run over the principal steps. We approached the case, you remember, with an absolutely blank mind, which is always an advantage. We had formed no theories. We were simply there to observe and to draw inferences from our observations. What did we see first? A very placid and respectable lady, who seemed quite innocent of any secret, and a portrait which showed me that she had two younger sisters. It instantly flashed across my mind that the box might have been meant for one of these. I set the idea aside as one which could be disproved or confirmed at our leisure. Then we went to the garden, as you remember, and we saw the very singular contents of the little yellow box.
"The string was of the quality which is used by sail-makers aboard ship, and at once a whiff of the sea was perceptible in our investigation. When I observed that the knot was one which is popular with sailors, that the parcel had been posted at a port, and that the male ear was pierced for an earring which is so much more common among sailors than landsmen, I was quite certain that all the actors in the tragedy were to be found among our seafaring classes.
"When I came to examine the address of the packet I observed that it was to Miss S. Cushing. Now, the oldest sister would, of course, be Miss Cushing, and although her initial was 'S' it might belong to one of the others as well. In that case we should have to commence our investigation from a fresh basis altogether. I therefore went into the house with the intention of clearing up this point. I was about to assure Miss Cushing that I was convinced that a mistake had been made when you may remember that I came suddenly to a stop. The fact was that I had just seen something which filled me with surprise and at the same time narrowed the field of our inquiry immensely.
"As a medical man, you are aware, Watson, that there is no part of the body which varies so much as the human ear. Each ear is as a rule quite distinctive and differs from all other ones. In last year's Anthropological Journal you will find two short monographs from my pen upon the subject. I had, therefore, examined the ears in the box with the eyes of an expert and had carefully noted their anatomical peculiarities. Imagine my surprise, then, when on looking at Miss Cushing I perceived that her ear corresponded exactly with the female ear which I had just inspected. The matter was entirely beyond coincidence. There was the same shortening of the pinna, the same broad curve of the upper lobe, the same convolution of the inner cartilage. In all essentials it was the same ear.
"In the first place, her sister's name was Sarah, and her address had until recently been the same, so that it was quite obvious how the mistake had occurred and for whom the packet was meant. Then we heard of this steward, married to the third sister, and learned that he had at one time been so intimate with Miss Sarah that she had actually gone up to Liverpool to be near the Browners, but a quarrel had afterwards divided them. This quarrel had put a stop to all communications for some months, so that if Browner had occasion to address a packet to Miss Sarah, he would undoubtedly have done so to her old address.