70 
BULLETIN 813, U. S. DEPARTMENT OF AGRICULTURE. 
to Juno. 1017. inclusive, have been • onsidered in this study. During 
this period pickings were made every month except in February. 
1017. when interfering rains made it impossible to do the work at 
the scheduled time. Inasmuch as it would be unfair to consider the 
fruit picked in March. 1017. as all produced during one month, it 
was decided that for the purpose of this comparison of seasonable 
production the crops picked at that time should be arbitrarily halved 
anil credited to February and March equally. 
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I 
Fig. 12.— Diagram showing the percentages of the total yields of Green-grade fruits and of Tree-Ripe 
fruits, by weight, produced each month by the trees of the various strains of Eureka lemons in the inves- 
tigational performance-record plat during the 3-year period from July, 1914, to June, 1917, inclusive. 
The strains are arranged from left to right in the order of their rank for total production, as shown in 
Table X. 
The first part of Table XIII shows the average individual-tree 
production of fruit of the Green and Tree-Ripe grades for each month. 
expressed in pounds. The comparative behavior of each strain in 
this respeet is best studied by expressing the monthly yields in per- 
centages of the annual crop, and these data are given in the second 
part of the table, and are shown graphically in figures 12 and 13. 
