From comparison of published data on ten methods of extracting nematodes from soil, Oostenbrink concluded that the two methods most satisfactory in time-saving and quantitative recovery were his elutriation method (Oostenbrink 1954) and the centrifuge method of Caveness & Jensen (1955) [for abstracts see Helm. Abs. 23, No. 448b and 24, No. I43g, respectively]. Due to lack of data, the methods of Cobb (1924 to 1925), Christie & Perry (1951) and Seinhorst (1955 and 1956) were not included. R.D.W.
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