Abstract
WHILE sieving sands from south-eastern South Australia to determine the particle size distribution, considerable difficulty was experienced in obtaining clean separations. For example it was found that after shaking for 10 min. on a mechanical sieving machine 2.2 gm. of sand passed the 200-mesh (0.08 mm.) screen, whereas an additional 10 min. sieving yielded a further 2.4 gm. Thus in this case the true amount of the sand below 0.08 mm. equivalent diameter was increased from 10 per cent to a value of 20 per cent of the original sample.
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BOND, R. Occurrence of Microbiological Filaments in Soils. Nature 184, 744–745 (1959). https://doi.org/10.1038/184744a0
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DOI: https://doi.org/10.1038/184744a0
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