often draws up the lip on one side alone, namely that facing his antagonist. Our word sneer is in fact the same as snarl, which was originally snar, the l "being merely an element implying continuance of action." 19 I suspect that we see a trace of this same expression in what is called a derisive or sardonic smile. The lips are then kept joined or almost joined, but one corner of the mouth is retracted on the side towards the derided person; and this drawing back of the corner is part of a true sneer. Although some persons smile more on one side of their face than on the other, it is not easy to understand why in cases of derision the smile, if a real one, should so commonly be confined to one side. I have also on these occasions noticed a slight twitching of the muscle which draws up the outer part of the upper lip; and this movement, if fully carried out, would have uncovered the canine, and would have produced a true sneer. Mr. Bulmer, an Australian missionary in a remote part of Gipps' Land, says, in answer to my query about the uncovering of the canine on one side, "I find that the natives in snarling at each other speak with the teeth closed, the upper lip drawn to one side, and a general angry expression of face; but they look direct at the person addressed." Three other observers in Australia, one in Abyssinia,