II
| Times Reacted to | Total Number of Pecks | |
|---|---|---|
| White | 6 | 19 |
| Blue | 4 | 11 |
| Red | 4 | 8 |
| Green | 4 | 4 |
| Orange | 2 | 7 |
| Yellow | 2 | 4 |
In other experiments chicks were tried with green spots on a red ground, red spots on a green ground, yellow spots on an orange ground, green spots on a blue ground, and black spots on a white ground. All were reacted to. Thus, what is apparently a long and arduous task to the child is heredity’s gift to the chick. It is conceivable, though to me incredible, that what the chick reacts to is not the color, but the very minute elevation of the spot. My spots were made so that they were only the thickness of thin paper above pasteboard. Any one who cares to resort to the theory that this elevation caused the reaction can settle the case by using color-spots absolutely level with the surface.[20]