This may be regarded as a companion record to the one shown previously. It records the highly important matter of the time of ripening of various fruits. This particular page shows among other things that a seedling Japan raspberry ripened April 25th, and a new hybrid blackberry May 1st. Some of Mr. Burbank's finest new fruits, including the Burbank cherry and the Sugar prune are made doubly valuable by the fact that they ripen several weeks earlier than similar fruits of other varieties. Mr. Burbank is constantly encouraging fruits, by selective breeding, to modify or lengthen their season of fruiting.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 8