A Plum With Small Stone and Much Meat
Here is the problem of reducing the size of the stone has been solved, and the defect shown by the plum depicted in a previous post has been overcome. There is no longer a cavity between the stone and the flesh of the fruit. Yet this is not a cling-stone. It is desirable that the stone should part from the flesh just as the fruit ripens, making a free-stone, but the severance should not be sufficient to cause an appreciable cavity. Mr. Burbank has produced many plums that conform to this ideal condition.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 2 Chapter 4