. Soil physics and management. forcing air into thebottle through A, the water with the suspended particles is forced out through JS to the levelof C. to enter at G. It is evident that the size of the particles carriedupward and through the outlet tube will depend upon the rate offlow of the water, and by regulating this the separations are are some inaccuracies in this method caused by counter-cur-rents in the elutriation cylinder and the tendency of the particlesto collect into granules. In order to overcome this, Hilgard devisedhis churn elutriator. 126 SOIL niYSICS AND MANAGEMEN
. Soil physics and management. forcing air into thebottle through A, the water with the suspended particles is forced out through JS to the levelof C. to enter at G. It is evident that the size of the particles carriedupward and through the outlet tube will depend upon the rate offlow of the water, and by regulating this the separations are are some inaccuracies in this method caused by counter-cur-rents in the elutriation cylinder and the tendency of the particlesto collect into granules. In order to overcome this, Hilgard devisedhis churn elutriator. 126 SOIL niYSICS AND MANAGEMENT {d) The Chum Elutriator Method of Hilgard/—Thit^ con-i>ist55 of ail apparatus? a!> !?ho\vu in tiguro i^S. Tlie soil in suspension isplaced in the base ot a eyliudrieal tube wliieU eonrains a vapidly ro-volvinii stirrer. Water is foreed into the basse of the tube inamounts sutlieient to create an U]nvard current just vapid enough toearrv out the tiuest particles. \\ hen these are removed the rate of Fui. 66. Fig. Fu;. 6S.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphila, bookyear1917
