July 15, 1921 
Relation of Hardiness to Protein Content of Wheat 515 
Table IV .—Relation of mean breaking point to protein content of California-grown 
wheats —Continued. 
PROPO 
Laboratory No. 
Number of grains broken by weight of- 
Mean 
breaking 
point. 
Average 
protein 
content. 
350.2 gm. 
453.6 gm. 
567 gm. 
680.4 gm. 
793.8 gm. 
Gm. 
Per cent. 
45. 
O 
24 
45 
60 
83 
631 
12. OO 
79. 
O 
6 
48 
86 
O 
631 
II. 90 
47 . 
O 
8 
22 
66 
93 
713 
II. 90 
46. ••. 
O 
0 
XI 
47 
* 73 
734 
II.96 
Average 
f . 
677 
II.94 
The data presented in Table IV are summarized in Table V. The 
constants involved in the calculation of the correlation coefficient are 
given in Table VI, and the correlation in Table VII. 
Table V. —Summary of relation of mean breaking point and protein content of 
California-grown wheat 
Breaking 
point. 
Protein 
content. 
Breaking 
point. 
Protein 
content. 
Breaking 
point. 
Protein 
content. 
Breaking 
point. 
Protein 
content. 
Gm. 
Per cent. 
Gm. 
Per cent. 
Gm. 
Per cent. 
Gm. 
Per cent. 
350 
8.97 
569 
8 . 6 l 
637 
10- S3 
7 X 4 
8. 76 
419 
12. 06 
584 
8.03 
642 
8- 95 
7 I 5 
11. 41 
461 
8. 98 
585 
8.76 
660 
IO. 48 
718 
io- 3 8 
475 
8. 40 
589 
II. 51 
666 
7-36 
721 
10. 10 
475 
9. 21 
591 
I3-87 
667 
10. 83 
722 
9. 01 
492 
10. 86 
597 
9-03 
675 
9.96 
726 
9. 27 
512 
8. 15 
S99 
8. 18 
677 
7- 79 
726 
13. 21 
5 r 5 
13. 00 
603 
9. 26 
681 
13- 43 
727 
9- 77 
5 I( $ 
n-35 
605 
11. 91 
686 
10. 26 
727 
10. 15 
5i7 
8. 85 
605 
12. 11 
687 
10. 13 
727 
13.42 
5i7 
10. 94 
606 
10. 39 
688 
8. 41 
728 
12. 26 
5i9 
13- 7i 
608 
8.46 
689 
7- i5 
73i 
7- 97 
524 
7- 83 
609 
9- 53 
690 
8. 08 
73i 
9-3i 
526 
7. 80 
613 
n-43 
691 
9- 33 
73i 
9- 43 
526 
9- 05 
6l5 
9. 08 
694 
7.29 
733 
8. 17 
527 
10. 91 
6 l 6 
9. 08 
698 
8. 08 
734 
10. 50 
53i 
8. 58 
6 l 7 
8. 18 
698 
9- 54 
736 
10. 30 
534 
8.25 
622 
9. 02 
700 
8. 76 
740 
9-83 
538 
11. 07 
622 
9.27 
702 
13- 36 
74i 
II. 02 
539 
9- 05 
624 
8. 77 
703 
9- 38 
747 
10. 14 
542 
8. 55 
62 5 
9 . l 8 
704 
8-34 
75° 
8. 83 
549 
9.90 
626 
8. 27 
710 
14. 60 
768 
8. 36 
549 
12. 79 
628 
11. 07 
710 
15. 80 
779 
8 - 54 
554 
9. 19 
632 
11. 76 
711 
7- 72 
788 
10. 01 
560 
9. 08 
636 
6. 92 
711 
13- 53 
788 
9-63 
566 
13-39 
637 
7 .18 
7i3 
8. 76 
99° 
10. 68 
