Donald Walker, Walker's manly exercises (1855)
“ Balancing is the art of preserving the stability of the body upon a narrow or a moving surface. The balancing bar consists of a round and tapering pole, supported horizontally, about three feet from the ground, by upright posts, one at its thicker extremity, and another about the middle, between the parts of which it may be raised or lowered by means of an iron peg passing through holes in their sides. ”
