LUTHER BURBANK 



properly, so that the result is a big, quickly-dried 

 prune of superlative quality. 



The following comparison of the French and 

 Standard prunes, made by G. E. Colby of the 

 University of California, gives a good idea of the 

 value of the Standard prune: 



Average 



The "Standard" French Prune 

 Average weight in grams . 49.7 23.6 



Number per pound 9.1 19.1 



Flesh, per cent 96.5 94.2 



Pit, per cent 3.5 5.8 



Sugar, per cent 18.9 18.5 



In case any one wishes to change a prune 

 orchard over to a more profitable variety, whether 

 for drying or shipping fresh, I would strongly 

 recommend the Standard for grafting. 



The Standard was offered to orchardists in my 

 catalog of 1911-12. The trees were sold at $3 each, 

 and thousands of trees have been distributed, but 

 it will be a good many years before the real value 

 of this superior prune is fully appreciated. 

 CLINGSTONE VERSUS FREESTONE 



The most striking individual peculiarity of the 

 Standard prune is its freestone quality, already 

 referred to. The development of this character is 

 of such interest and importance that it calls for 

 more than passing mention. 



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