Smithsonian Report. 1960 — Palmer 



Plate 2 



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Y 



v\ 



Composite pliotoniicrograph of longitudinal views of mature cotton fibers of different 

 botanical growths selected to represent a range in fineness: Specimen a is a fine fiber 

 from Sea Island cotton Gossypium barbadense, staple length 1-3/4 inches; c is a very coarse 

 fiber of the variety Garo Hill from Asian cotton G. herbaceum, staple length about 5/8 

 inch; and /; is a fiber of intermediate fineness between a and c from American upland 

 cotton G. hirsutum, staple length 1-3/S inches. Magnification in all cases X 475. 



