LINT PERCENTAGE AND LINT INDEX OF COTTON. 



11 



Having ascertained the weight of the seeds per hundred from 

 Table IV and knowing the percentage of lint, the lint index may 

 then he ascertained by reference to Table I. 



Table IV. — Number of seeds in a standard sample of 100 grams of seed cotton 

 at different lint percentages and weights of seed per hundred. 



V'eight 

















Percentage of lint. 













of 100 



































ginned 

 seeds. 



25 



26 



27 



28 



29 



30 



31 



32 



33 



34 



35 



36 



37 



38 



39 



40 



41 



Seeds 



42 





Seeds 



.Seeds 



Seeds 



Seeds 



Seeds 



Seeds 



Seeds 



Seeds 



Seeds 



Seeds 



Seeds Seeds 



Seeds 



Seeds 



Seeds 



Seeds 



Seeds 



6.0 

 6.5 

 7.0 



1, 250 

 1,153 

 1,071 



1,233 

 1,138 

 1,057 



1,216 

 1,123 

 1,042 



1,200 

 1,107 

 1,028 



1, 183 

 1,092 

 1,014 



1,166 

 1,076 

 1,000 



1, 150 



1,061 



985 



1,132 



1,046 



971 



1,116 



1,030 

 957 



1,100 



1,015 



942 



1,083 



1,000 

 92S 



1,066,1,050 

 984 969 

 914 900 



1,033 

 953 



885 



1, 016 1, 000 



938i 923 

 871 857 



983 966 

 907! 892 

 8421 828 



7.5 



8.0 

 8.5 



1,000 

 937 

 882 



986 

 925 

 870 



973 

 912 

 858 



960 

 900 

 847 



946 



887 

 835 



933 



875 

 823 



920 



862 

 811 



906 

 850 

 800 



893 



837 

 788 



880 

 825 

 776 



866 

 812 

 764 



853 

 800 

 752 



840 

 787 

 741 



826 

 775 

 729 



813 



762 

 717 



800 

 750 

 705 



786 773 

 737 725 

 694 682 



9.0 

 9.5 

 10.0 



833 



789 

 750 



822 

 778 

 740 



811 



768 

 730 



800 

 757 

 720 



788 

 747 

 710 



777 



736 

 700 



766 

 726 

 690 



755 

 715 

 680 



744 

 705 

 670 



733 

 694 

 660 



722 

 684 

 650 



711 

 673 

 640 



700 

 663 

 630 



688 

 652 

 620 



677 

 642 

 610 



666 

 631 

 600 



655 



621 

 590 



644 

 610 

 580 



10.5 

 11.0 

 11.5 



714 

 681 

 652 



704 

 672 

 643 



695 

 663 

 634 



685 

 654 

 626 



676 

 645 

 617 



666 

 636 

 608 



657 

 627 

 600 



647 

 618 

 591 



638 



609 

 582 



628 

 600 

 573 



619 



590 

 565 



609 

 581 

 556 



600 

 572 



547 



590 

 563 

 539 



580 

 554 

 530 



571 

 545 

 521 



561 

 536 

 513 



552 



527 

 504 



12.0 

 12.5 

 13.0 



625 



600 

 576 



616 

 592 



569 



60S 

 5.84 

 561 



600 

 576 

 553 



591 



56S 

 546 



583 

 560 

 538 



575 

 552 

 530 



566 

 544 

 523 



558 

 536 

 515 



550 

 528 

 507 



541 

 520 

 500 



533 

 512 

 492 



525 

 504 



484 



516 

 496 

 476 



508 

 488 

 469 



500 

 480 

 461 



491 483 

 472 464 

 453 446 



13.5 



14.0 

 14.5 



555 

 535 

 517 



548 

 528 

 510 



540 

 521 

 503 



533 

 514 

 496 



525 



507 

 489 



518 



500 

 482 



511 



493 

 475 



503 



485 

 468 



496 

 478 

 462 



488 

 471 

 455 



481 



464 

 448 



474 

 457 

 441 



466 

 450 

 434 



459 



442 

 427 



451 

 435 



420 



444 

 428 

 413 



437, 429 

 421 ; 414 

 406 400 



15.0 

 15.5 

 10.0 



500 

 483 

 468 



493 



477 

 462 



486 

 470 

 456 



480 

 464 

 450 



473 

 458 

 443 



466 

 451 

 437 



460 

 445 

 431 



453 

 438 

 425 



446 

 432 

 418 



440 

 425 

 412 



433 

 419 

 406 



426 

 412 

 400 



420 

 406 

 393 



413 406 

 400 ; 393 

 387, 381 



400 

 387 

 375 



393 1 386 

 380i 374 

 368j 362 



PLANTERS CAN ESTIMATE THE LINT INDEX. 



Since 100 grams equal approximately 3^ ounces, a grower may 

 determine with fair accuracy the size of the seeds of the variety he 

 plants by ascertaining the number of seeds in 3-| ounces of seed cotton 

 and referring to Table IV. He can then estimate the lint index of 

 his variety by a reference to Table I. For example, if a grower finds 

 566 seeds in 3| ounces of his seed cotton and his cotton is ginning out 

 32 per cent of lint, by reference to Table IV the seed will be found 

 to weigh 12 grams per hundred. Referring then to Table I, under a 

 seed weight of 12 -J- 32 per cent, the lint index will be found to be 5.64. 



SUMMARY. 



(1) The percentage of lint is the relation between the weight of 

 the fiber and the weight of the seeds from which the fiber is obtained 

 in the process of ginning and is expressed as a percentage of the un- 

 ginned seed cotton. The use of a lint percentage originated with 

 buyers of seed cotton, and if used by breeders and growers as a meas- 

 ure of the comparative value of varieties it should be employed with 



