CONTENTS 
PAGE 
Nomenclature 539 
Description of silk colors 540 
Preliminary studies and indications 541 
Analysis of inheritance 542 
Interrelations of green, salmon, and brown silks 542 
Relation of salmon silks to pericarp color 542 
Relation of salmon silks to the B and PI factors for plant color. . 545 
Relation of salmon silks to the A factor 546 
Relation of salmon silks to the R factor 546 
Summary of inheritance 547 
Linkage relations of F, PI, and Sm 547 
Preliminary tests of linkage of PI and Sm 547 
Construction and results of three-point tests 548 
The chromosome map 549 
Coincidence of crossing-over 553 
Summary of linkage studies 554 
Literature cited 554 
535 
