Note 49 — Chapter II · MAN’S FIRST WEAPONS—THE STONE AND THE STICK. THE EARLIEST AGES OF WEAPONS. THE AGES OF WOOD, OF BONE, AND OF HORN.

Aristotle Darwin holds (sorrow! that we should say ‘held’): ‘Our male semi-human progenitors possessed great canine teeth,’ as is still shown by a few exceptional individuals. Hence we derived the trick of uncovering the eye-tooth when sneering or snarling at ‘Brother Man.’