COMPOSITION OF CALIFORNIA LEMONS. 
11 
Table 6. — Summary of composition of Eureka, Lisbon, and Villa Franca lemons 
(Tables 1 to 3). 
Tree No. 
Specific 
gravity 
of fruit. 
Oil per ton 
of fruit. 
Acid per 
ton of fruit. 
Eureka: 
1 
0. 9522 
.9386 
.9407 
.9408 
.9427 
.9403 
.9232 
.9378 
. 9397 
.9274 
Pounds. 
9.9 
9.2 
8.9 
11.3 
10.0 
8.6 
9.6 
10.2 
9.8 
7.8 
Pounds. 
74.3 
10 
73.3 
11 . 
69.1 
13 
66.6 
14 . . . 
61.4 
16 
63.9 
18... 
62.1 
21 
65.2 
22... 
61.4 
24 
47.2 
.938 
± .004 
9.5 
± .3 
64.5 
±1.3 
Lisbon: 
2 
.9046 
.9121 
.9324 
.9250 
.9141 
.9126 
10.5 
10.8 
11.1 
10.1 
8.1 
10.0 
69.6 
4... 
69.1 
5 
67.6 
6 
58.2 
64.5 
15 
58.4 
.917 
± .004 
10.1 
± .3 
64.7 
±1.2 
Villa Franca: 
3 
.9247 
.9314 
.9225 
11.7 
10.1 
10.4 
72.7 
52.9 
17 .' 
62.2 
.926 
± .004 
10.7 
± .3 
62.6 
±1.2 
Table 7. — Summary of analyses of different strains of Eureka and Lisbon lemons grown 
at Corona, Calif. 
Variety. 
Num- 
ber 
trees. 
Specific gravity 
of fruit. 
Oil per ton 
of fruit. 
Rind. 
Insoluble 
solids in 
pulp. 
Sugars 
in juice. 
Acidity 
of juice. 
10 
5 
0.939 (±0.005) 
.905 (±0.004) 
Pounds. 
9.5 (±0.4) 
10. 8 (±0.4) 
Per cent. 
36.2(±0.9) 
38.8(±0.5) 
Per cent. 
1.9 (±0.1) 
1.7(±0.07) 
Per cent. 
2.5 (±0.1) 
1.9 (±0.1) 
Per cent. 
5.3 
Lisbon 
5.7 
Table 8. — Relation between color and thickness of peel. 
Color. 
Eureka: 
Dark green.. 
Light green. 
Light yellow 
Full yellow. 
Lisbon: 
Dark green. . 
Light green. 
Light vellow 
Full yellow . 
Number 
samples 
exam- 
ined. 
Number samples found to be- 
Thin 
skinned. 
Medium Thick 
skinned, skinned. 
4 
8 
6 
17 
3 
21 

3 

2 

14 
2 
13 
1 
1 
