Interesting Hybrid Berries
Some of Mr. burbank's most recent and interesting experiments have to do with new types of berries. The boxes here shown contain some second-generation seedlings of crosses between the Balloon Berry and the Hawaiian raspberry. There are also a number of straight seedlings, of both parents, indicating the range of a season's work, along a single line.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 6 Chapter 5