638 



Williams, R. O., 226 

 Williams, R. S., 224 

 Wilson, Percy, 225 

 Wilson-Brown, Frere, 231 

 Wilt, 73 



flax, 74 



oak, 50 

 Wood pulp, 513 

 Woodson, Robert E., Jr., 225 



INDEX 



Wright, Charles, 216 

 Wright, Sewall, 255 

 Wurdack, John J., 230, 245 



Xylem, 95 



Youngken, H. W., Jr., 442^55 

 Yuncker, Truman George, 19, 32 



