Between November, 1963, and July, 1964, a graveyard test of some 6000 preservative-treated stakes was installed at 8 sites equally distributed between Papua New Guinea in the tropics, through Queensland and New South Wales to Victoria. More than 40 different preservatives and preservative mixtures, mostly at several different levels of retention, were used to impregnate sawn specimens of Pinus radiata and of Eucalyptus regnans sapwood. Many of the treatments were also duplicated in natural rounds of Eucalyptus regnans of small diameter consisting almost entirely of sapwood. The preservatives included in the test are listed together with sufficient details of preservative retention, treatment procedures and specimen preparation for a full understanding of the comprehensive nature of the test. In addition, a description of the test sites, of the method of inspection and of the manner in which the inspection results are handled has been set down so that the store of data available from this test might be more widely known.

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