Fig. 1From: Unearthening Old Data: Darwin was Indeed Correct About Earthworm BehaviorResults of Darwin’s experiments. Shown are the percentage of “leaves” dragged into burrows by the tip (black), the base (white), or the middle section (gray). a Experiments with differently shaped leaves from plants non-native to England; the shape of the leaves is shown above. b Experiments with pine needles: Pinus 1 Needles collected from the garden, Pinus 2 Pot experiments in the house, Pinus 3 Pot experiments in the garden, Pinus 4 Shellac experiment, Pinus 5 Thread experiment. c Experiments with paper triangles of different shapes (broad, narrow) and in the house. For more information, see textBack to article page