Damage resulting from microorganisms occurring in increasing amounts of apparently good spinnable Middling cotton and the effects on mill processing are recognized. Such cottons, called "cavitomic," are distinguished from off-color and field-damaged types. Data and obser vations supporting a previous publication, together with methods of observation, are given. Reducing-material content, pH, and metallic-ion content of easily soluble water extracts are dis cussed, and relationships between them shown. Weakening of the fiber is exhibited by shorten ing of staple. Data obtained under both laboratory-controlled and conventional warehouse- storage conditions are given.
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