After a pause, he continued: "I did not stop, however, with the examination of his clothing and umbrella, but looked at the light patent-leather shoes he had on. They were new and the soles not even soiled. They had not, I am sure, been worn on wet streets. Next I looked for and found his overshoes nearby the umbrella: they had evidently been worn in rough weather and had not since been cleaned, but they too were dry and so did not prove anything." "But," I asked, "what bearing could that have on the question any way? He had certainly been out that night, for the officer saw him." "Yes, the officer thought he saw him," he replied, "but officers are sometimes mistaken." I saw his drift and also his oversight, as I thought. "I am afraid you are off the track a bit, Miles," I said, "when you try to reason that the officer was mistaken and that White was not out that night. We have both for a moment overlooked a factor in the case that proves the contrary. Admitting," I continued, "that the officer might possibly have been mistaken as to the identity of the man he saw leave the house, he was not mistaken about the ulster for it was taken by some one to Belle Stanton's, but whoever wore the ulster also wore the cap that matched it for the officer saw that too, and as the cap was back in the room in the morning, the wearer of it must have returned." Miles nodded his assent. "Such being the case," I concluded, "the wearer must have been White, because no one else, certainly not the murderer, would have returned to the scene." "That is true," Miles admitted; "I had forgotten about the cap." "That being so then," I said, "I also maintain that he wore not only the cap, but the ulster when he returned, and that the ulster must therefore have been taken to Belle Stanton's by some one else, and at a later hour." The detective shook his head. "I hardly think you have satisfactorily established the last proposition," he said, "for he might have returned with the cap though without the ulster." "Well, we will see who is right," I answered, for I was not willing to abandon my theory. Nothing more was said, and during the remainder of our journey I was absorbed in the intricacies of the case, and I think Miles was similarly engaged, for he seemed in a deep study. I was glad to think it so, for I wanted to thoroughly engage his interest, as I had determined to make him an ally. I felt that I could not handle the matter alone, for while I was willing and able, as I thought, to reason out all the abstractions involved, I must have expert assistance in the detective work to furnish me the material of facts with which to really accomplish anything.