WITH FOUR PLATES Summary* It is not suggested that this 'ideal' condition is possible in practice. 60A. J. LOW * This work was done before the change to 2-and o.g-mm. sieves. 70A. J. LOW is used in addition. In Fig. 3 the percentage water-stable aggregates > 2 mm. and > 0-5 mm. are plotted. For the old pasture the two graphs are very similar. For the ley the slope is a little steeper on the 0.5-mm. graph. Nevertheless the difference is about the same between 2-mm. and o-s-mm. values at the last reading for both soils.