XV111 CONTENTS 



CHAPTER XVI 



FIBER CROPS 



Classification and Production 



PAGE 



Materials for Fibers 3l 



Classification according to use, p. 305; Classification 

 according to source, p. 306; Classification according 

 to spinning units, p. 306; Identification of fibers, p. 

 307; Number of fiber plants, p. 308; Production, 

 p. 308. 



Practicums . . . . . . , . . . 309 



Identification of fibers, p. 309; Microscopic examina- 

 tion of fibers, p. 309; Value of fibers as determined 

 by action of reagents, p. 310. 



Collateral Reading . . . . . . . ..310 



CHAPTER XVII 



FIBER CROPS 



Cotton 



Structure and Composition , 31 r 



Relationships .... . . . . 311 



Roots, p. 311; Vegetative portion, p. 312; Flowers, p. 

 313; Bolls, p. 314; Seed, p. 316; Lint, p. 317; 

 Structure of fiber, p. 320; Qualities of lint, p. 321; 

 Linters, p. 321; Proportion of parts, p. 321; Com- 

 position, p. 322; Ash, p. 323. 

 Collateral Reading .324 



CHAPTER XVIII 



FIBER CROPS 



Cotton 



Varieties and Improvement . . . . . 325 



Species ... . . . 325 



American upland cotton, p. 326 ; India cotton, p. 326 ; 



