Smithsonian Report. 1960 — Pain 



Plate 4 



1. 





3. 



Pliotomiciopraplis of cross sections of cotton tibcrs selected to show a rancc of geometrical 

 fineness and shapes: 1, Medium, American upland; 2, coarse, American upland; 3. very 

 coarse, Asian. Magnification in all cases X 760. (See also tables 2 and 3.) 



