Ears of corn almost always have an even number of rows. When they don’t, it’s often been considered weird enough to make news. A story is told of one slave owner who cynically promised his slaves their freedom if they could find an odd-rowed ear of corn, figuring they would never find such a thing. But one slave went into the corn-field, carefully opened the husk on an ear of young corn, cut out a row of kernels, then closed up the husk again. As the corn grew, the vacant row closed up, so that when the corn was finally ready to be picked, he was able to present the slave owner with an odd-rowed ear of corn and thereby claim his freedom.