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The subdivision of the clay fraction in mechanical analysis

Published online by Cambridge University Press:  27 March 2009

E. W. Russell
E. W. Russell
Affiliation:
Soil Physics Department, Rothamsted Experimental Station, Harpenden, Herts
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Extract

An examination has been made of the possibility of extending the routine mechanical analysis of soils down to finer particles than the conventional clay. The main conclusions reached are:

(1) Sampling depths of only 2 cm., using standard mechanical analysis apparatus, appear to introduce no new sources of error.

(2) If a constant temperature room is available, sampling times of 7 days seem to be allowable.

(3) Using special pipettes and settling vessels, sampling depths of only 2½ mm. seem to be allowable.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 33 , Issue 3 , July 1943 , pp. 147 - 154
Copyright
Copyright © Cambridge University Press 1943

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References

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Russell, J. L. (1936). Proc. Boy. Soc. A, 154, 550–60.Google Scholar