An experiment with corn planted at various depths resulted in the young plant appearing above ground in the following number of days:

Depth inchea.

Days when appeared.

1 ....................

8 1/2

1 1/2 .........

9 1/2

2 ..................

10

2 1/2 .........

11 1/2

3 ..................

13

4 ........

13 1/2