A method for making mechanical analyses of the altimate natural sructure of soils. By G.J.Bouyoucos.(Soil Sc.Vol.40.No.6.p.481).Through a number of sieves.10.20.40.60.80 and 100 meshes.soil is successively passed in the slaked state.the process being repeated.with the fraction passing through the first sieve being taken to the next one and so on.The several fractions retained on the seives are weighed .All these together with the material passing through the first (100 mesh)were collected again.dispersed and mechanically analysed by the the hydrometer method.At the finish,the dispersed material is again taken through the sieve procedure and the several fractions now obtained with the dispersed soil are noted .Thus we get material passing with more slaking and with dispersion and this givs a measure of resistant and non -resistant aggregrates in the soil.
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