Specimens of sole leather were subjected to indentation tests and compressive tests. Comparisons between compression data and the indentation numbers of the original dry leather show that compression may be used as a measure of indentation. Compression of dry leather gives results showing better correlation between the methods and eliminates distortions occurring when moist leather is compressed. Compression data show satisfactory reproducibility. Compression for a three-minute period is

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... e for test purposes, all changes being completed in this interval with the exception of a very minute compression proceeding at a slow rate. Compensation for variations in thickness of specimens may be effected by expressing the results in terms of percentage compression. Area and shape of specimens do not affect the compression appreciably. Compression-decompression curves show large hysteresis loops.