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POPULAR SCIENCE MONTHLY.
him, and a few years ago I had hoped to meet him at the Congress of Hybridologists in London, but his arduous labors prevented him from being present. I feared even now that there would not be many chances of speaking to him, because July is his busiest time, when all the numberless crossings are made and the selection of prunes takes
Luther Burbank.
place. These fruits at the present time are represented by a larger number of varieties than any other plant in his orchards. It is no small matter to select the best plum out of 300,000 different varieties. This requires not only talent and experience, but also a great deal of time, and it all has to be done within a few weeks while the prunes are ripe on the trees.
