20 
BULLETi:^' 821, TJ. S. DEPARTMENT OF AGRICULTURE. 
Table XVI gives the percentages of fruits by grades for each pickhig 
during the calendar 
year 1913 in the 
heated plat 6, an acre* 
of Lisbon lemon trees, 
as compared with the 
nonheated plat 8. 
The percentages of 
frozen and merchant- 
able fruits in these 
plats are shown graph- 
ically in figure 10. 
Table XVII gives 
the percentages of 
fruits by grades for 
each picking during 
the calendar year 1913 
in nonheated plat 3, 
an acre of Eureka 
lemon trees, as com- 
pared with plat 5, 
inadequately heated, 
and plat 7, efiicient- 
ly heated. The per- 
centages of frozen and 
merchantable fruits 
in these plats are 
shown in figure 1 1 . 
Fig. 9.— Diagram prepared from the figures presented in Table XV, 
sho-wing the percentages of merchantable and frozen fruits produced 
on the nonheated acre of Lisbon lemon trees, plat 1, as compared 
w'ith the heated acre, plat 4, during the calendar year 1913. 
Table XVI. — Percentages of fruits hy grades produced in the heated acre of Lisbon lemon 
trees, plat 6, as compared with the nonheated acre, plat 8, during the calendar year 1913. 
[These percentages are computed from the total number of lemons produced by these plats as shown in 
Tables X and Xn.] 
Grade and condition. 
Date of picking. 
Mar. 6. 
Apr. 2. 
May 14. 
June 27. 
Aug. 13. 
Sept. 15. 
Oct. 27. 
Dec. 8. 
Green grade: 
Not heated 
Heated 
1.77 
66.44 
1.30 
22.72 
3.07 
89.16 


96. 93 
10.84 
0) 
09.40 
0) 
7.10 
(0 
76.50 
0) 
7.83 
(1) 
15.66 
78.71 
0) 
86.31 
<23. 
Sl5 
96.84 
(0 
3.16 
0) 

(1) 
78.24 
(1) 
10.78 
0) 
89.02 
0) 
10.98 
(1) 
37.80 
(1) 
28.96 
60.76 
0) 
15.55 
97.47 
31.03 
.51 
29.73 
97.98 
60.76 
2.02 
8.94 

30.40 
98.56 
69. 54 
Tree-Ripe grade: 
Not heated 
Heated . . . 
.41 
22.97 
Merchantable fruit: 
Not heated 
Heated 
98.97 
92.51 
Cull grade: 
Not heated 
Heated 
1.02 
5.37 
Frozen grade: 
Not heated 
Heated 

2.11 
1 Practically all the fruits in the nonheated plat were frozen and were removed from the trees on March 6. 
No fruits were picked from this plat until October . 
