Occurrence of Microbiological Filaments in Soils

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.