
754  SUBJECT INDEX 
spring wood, 14 
tension wood, 18, 533-534 
tracheid, 16, 17 
tyloses, 14, 584 
variation, 532-534 
vascular cambium, 15 
vessel, hardwood, 14, 18, 583-
584 
Wood
 Science
 and
 Technology,
 7 
Xanthate, cellulose, 40 
Xylan, 32, 34, 55, 49 
Xylose, 33, 35 
Yankee dryer, 244, 245, 261 
Yield, 55 
Zeta potential, 206, 425-426, 439, 
442-443, 453