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Summary A very fine sandy loam soil was severely puddled in the laboratory and subjected to varying numbers of freeze/thaw‐wet/dry cycles in an attempt to restore its original level of structural stability. After only three cycles the stability of the treated soil reached its maximum value, which was slightly greater than that of untreated soil collected from the field. A higher level of soil organic matter was accompanied by an increase in structural stability as determined by the dispersion ratio technique and a technique involving partial dispersion in Calgon.
S. J. RICHARDSON (Wed,) studied this question.