PLATE IX 



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Note that delignification has 

 had at least two effects: 

 (1) the background is less 

 intense, corresponding to 

 the removal of the scatter 

 fromlignin; (2) the cellulose 

 arcs are rather narrower 

 tangentially, corresponding 

 to a decrease in angular 

 dispersion. There is also a 

 suggestion that the arcs are 

 slightly narrower radially, 

 which would suggest a slight 

 increase in crystallinity, e.g. 

 possibly an increase in 

 micelle size. 



Fig. 1. Sector diagram of Coir before and after delignification. 

 (See Plate II, fig. 3, for details.) 

 Upper left and lower right: untreated. 

 Upper right and lower left: delignified. 



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Fig. 2. X-ray diagram of a block consisting 

 of parallel strips of cambial tissues, beam 

 perpendicular to flattened face of strips (and 

 therefore in effect along a radius to the trunk 

 surface), direction A, fig. 59. Note that the arcs 

 are almost circular but have a higher intensity 

 towards the top and the bottom. This 

 indicates a preference in the specimen for 

 transverse orientation of the cellulose chains. 



Fig. 3. As in fig. 2, but beam parallel to 



the flat surfaces and perpendicular to cell 



length (direction B, fig. 59). 



