Pears with Blended Heredities
When Mr. Burbank blends the strains of pears from the Orient and Occident, the hybrid offspring show wide variation of form and texture and flavor, particularly in the second and subsequent generations. This picture shows characteristic specimens of such mixed heritage-good material for the development of new varieties.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 1