136 BULLETIN 623, U. S. DEPARTMENT OF AGRICULTURE. 
juice are very similar to those of the Thomson. The second in rank, 
the Thomson- Washington, bears fruits having the external appear- 
ance of the Thomson and the flesh and juice characteristics of the 
Washington strain. In order to interpret this diagram properly, it 
should be compared with Table XIV, which shows the actual average 
crops of the individual trees of these strains. 
Figure 10 shows graphically the percentages of fruits of the 
Orchard and Standard grades in the marketable crops from trees of 
the various strains found in the investigational performance-record 
plats for the 4-year period. This diagram emphasizes the pro- 
duction of fruit of the Orchard grade. The commercial fruit grower 
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Fig. 11. — Diagram showing the production by commercial sizes and grades of the crops of the 10 highest and 
10 lowest producing trees, irrespective of strain, in the investigational performance-record plats of the 
Washington Navel orange. The figures indicate the proportion of each size or grade to the total crop, 
calculated from the average weights during a 4-year period, 1912 to 1915, inclusive. Figure 12 shows 
similar comparisons based on the number of fruits produced. 
makes no record of the quantity of cull fruit produced by his trees 
and hence the percentages given in this figure show the relative quan- 
tity of the commercial grades borne by the various strains more 
accurately than those in figure 9. 
Figure 10, like figure 9, is based on the records given in Table XIV 
and should be interpreted on the basis of those data. 
Figure 11 shows the production by commercial sizes and grades of 
the 10 highest producing trees in the performance-record plats in 
comparison with the corresponding yields of the 10 lowest producing 
trees in these plats. The percentages shown are calculated from the 
