"There were other inferences to be made--slighter, but all pointing the same way. For instance, a man of Foggatt's age does not, as a rule, munch an unpeeled apple like a school-boy. Inference, a young man, and healthy. Why I came to the conclusion that he was tall, active, a gymnast, and perhaps a sailor, I have already told you, when we examined the outside of Foggatt's window. It was also pretty clear that robbery was not the motive, since nothing was disturbed, and that a friendly conversation had preceded the murder--witness the drinking and the eating of the apple. Whether or not the police noticed these things I can't say. If they had had their best men on, they certainly would, I think; but the case, to a rough observer, looked so clearly one of accident or suicide that possibly they didn't. "As I said, after the inquest I was unable to devote any immediate time to the case, but I resolved to keep my eyes open. The man to look for was tall, young, strong and active, with a very irregular set of teeth, a tooth missing from the lower jaw just to the left of the center, and another from the upper jaw a little farther still toward the left. He might possibly be a person I had seen about the premises (I have a good memory for faces), or, of course, he possibly might not. "Just before you returned from your holiday I noticed a young man at Luzatti's whom I remembered to have seen somewhere about the offices in this building. He was tall, young, and so on, but I had a client with me, and was unable to examine him more narrowly; indeed, as I was not exactly engaged on the case, and as there are several tall young men about, I took little trouble. But to-day, finding the same young man with a vacant seat opposite him, I took the opportunity of making a closer acquaintance." "You certainly managed to draw him out." "Oh, yes; the easiest person in the world to draw out is a cyclist. The easiest cyclist to draw out is, of course, the novice, but the next easiest is the veteran. When you see a healthy, well-trained-looking man, who, nevertheless, has a slight stoop in the shoulders, and, maybe, a medal on his watch-guard, it is always a safe card to try him first with a little cycle-racing talk. I soon brought Mr. Mason out of his shell, read his name on his medal, and had a chance of observing his teeth--indeed, he spoke of them himself. Now, as I observed just now, there are several tall, athletic young men about, and also there are several men who have lost teeth. But now I saw that this tall and athletic young man had lost exactly _two_ teeth--one from the lower jaw, just to the left of the center, and another from the upper jaw, farther still toward the left! Trivialities, pointing in the same direction, became important considerations. More, his teeth were irregular throughout, and, as nearly as I could remember it, looked remarkably like this little plaster mold of mine."