Bore samples are important specimens; e.g. they are in use to investigate poles in service. On the basis of known methods of microtomy a technique is described which permits the production of longitudinal cuts from bore samples. For this purpose, the bore sample is glued onto a mounting; the surface of cut is coated with a polystyrene solution. The cut thus consolidated can be stained, drained, and embedded in a mounting media which dissolves the polystyrene film. By correlating the microscopic results with tests by reagents on the remaining bore sample, it is possible to evaluate the condition of the wood and its protection more objectively.

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