Abstract
It is suggested that representation of a thinning guide in terms of stand height and in graphical form gives it a flexibility to individual stand characteristics which is not possible in tabular form, and that such flexibility is necessary if a thinning guide is to be a ready practicable guide to logging officers. A special value of the graphical form is that past and proposed thinning of a stand can be represented diagrammatically, against a background of growth and stability criteria. By indicating long-term possibilities, this should assist with short-term decisions.

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