112 
Journal of Agricultural Research 
Vol. XI, No. 4 
Table II. —Type and variability of the four chemical-composition strains of Indian corn 
for n crops, 1905 to 1915— Continued 
crop op 1912 
Character and strain. 
Mean. 
Em¬ 
pirical 
mode. 
Standard devia¬ 
tion. 
Coefficient of vari¬ 
ability. 
Length of ear, in inches: 
Hieh-orotein. 
7. 992 ±0. 028 
8. 550± . 038 
7. 2io± . 031 
7. 752 ± .032 
5. 850± .014 
6. 443 ± .014 
6. o66± . on 
8.5 
9. 0 
1. 356±o. 028 
16.97 ±0.36 
Low-protein. 
1. 4901b . 027 
i 7 - 43 ± *34 
High-oil. 
8. 0 
1. 232 ± . 022 
17.091b .31 
Low-oil. 
n. 3 
1. i8o±. 023 
15. 22 db . 32 
Circumference of ear, in 
inches: 
Hieh-orotein. 
6. 0 
. 475 ^ - OI ° 
8. 12 ± . 17 
Low-protein. 
6. 50 
. 549 ± - OI ° 
8. 52 ± . 16 
Hieh-oil . 
6. 25 
6. 75 
. 459 ± * °°8 
7 - 57 ± • *4 
Low-oil. 
6. 619 ± . 032 
8. 012 ±. 059 
10. 962 ± . 071 
7. 852 ±.049 
10. 369 ± .073 
12. 866± . 052 
13. 794 ± .059 
14. 7oo± . 045 
12. 448 ± .053 
. 575 ± .011 
8. 66 ± . 17 
Weight of ear, in ounces: 
Hieh-orotein. 
10. 0 
1. 985 ± .042 
24. 77± .$7 
T ^nw-protein. 
12. 0 
2. 640± . 051 
24. o8± . 49 
High-oil. 
9. 0 
1. 94i± -035 
24. 72 ± .45 
Low-oil. 
10. 0 
2. 561 ± . 052 
24. 70± .54 
Rows of kernels on ears: 
Hieh-orotein. 
12. 0 
1. 745 ± • °37 
13. 56 ± .29 
T />w-protein. 
14. 0 
1. 801 ± . 042 
13* 05 ± -26 
Hieh-oil. 
14. 0 
1. 788 ± . 032 
12. i6±. . 22 
Low-oil. 
12. 0 
1. 817 ± . 038 
14. 6o± . 31 
crop op 1913 
Length of ear, in inches: 
High-protein. 
7. 438±o. 035 
8. 051 ± .041 
6. 582 ± .033 
7. 026± .033 
5 - 593 ± -oi 9 
5. 956± .017 
5 - 395 i • OI 4 
6. 38o± . 016 
6. 754 ± - 05 1 
8. 22I± • 060 
8.0 
I. 2I4±0. 025 
16. 32 ±0.33 
T/vw-pmtein. 
8.5 
6-5 
1. 397 ± . 029 
17. 35± .37 
Hieh-oil. 
1. i78± . 023 
17. 90i; .36 
Low-oil. 
7*5 
5 * 5 
1. 263 ± . 023 
17. 98± .32 
Circumference of ear, in 
inches: 
Hieh-orotein. 
. 5893= . 013 
10. 53 ± . 24 
Low-protein. 
6.0 
. 5781b . 012 
9. 70± . 21 
High-oil. 
5 * 5 
. 493 ± - OI ° 
9. I4± . 18 
Low-oil. 
6. 5 
. 604 ± . on 
9 * 47 ± 
Weight of ear, in ounces: 
High-protein. 
6. 0 
1. 708 ± . 036 
25. 29± .57 
Low-orotein. 
9. 0 
1. 890 ± . 042 
22 . 99 ± .55 
High-oil. 
5. 6o4± .043 
7 * 492 i -057 
13. 008 ± . 052 
14. 26o± . 060 
14. 512 ± .057 
13. oio± .033 
6.0 
1. 437 ± * ° 3 ° 
25.64± . 58 
Low-oil. 
8.0 
2. ooo± . 040 
26. 70± . 59 
Rows of kernels on ears: 
High-protein. 
12. 0 
1. 782± .037 
13. yo± . 29 
Low-orotein. 
14. 0 
1. 9141b .042 
13. 42± .31 
High-oil.. 
14. 0 
1. 862 ± . 040 
12. 83 ± .28 
Low-oil. 
12. 0 
1. 842 ± .038 
14. i6± . 29 
