chapter  I
14 Pages

ROUNDABOUT METHODS

WI-lEN any of those higher animals, which make use of their vision at all, have become aware of food somewhere in their field of vision (or any other objective), they tend-so long as no complications arise-to go after it in a straight line. We may even assume that this conduct is determined without any previous experience, assuming only that their nerves and muscles are mature enough to carry it out.