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Ten Corn Variations

The smallest figure shows the grain of the teosinte, the primitive type of corn. The other figures show a gradation between this primitive form and the perfected field corn, as developed through hybridization. We may suppose that the corn passed through some such stages as these in the course of its evolutionary development.

Ten Corn Variations

This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 1