Fig. 9From: Identifying plant fibres in cultural heritage with optical and electron microscopy: how to present results and avoid pitfallsTransmitted white light- (a) and Polarized Light Microscopy PLM (b, c, d) of archaeological textile find B 4864_g,h belonging to the 10th Century woman’s shift from the Viking Age burial. a Transmitted white light image showing smooth fibre surface with dislocations and cross-markings. b PLM with crossed polars showing almost complete extinction in the middle of the image—an area suitable for performing the Modified Herzog Test. c PLM with crossed polars and red-plate compensator, the fibre shows Indigo II in 0° position. d PLM with crossed polars and red-plate compensator, the fibre shows Orange I in 90° positionBack to article page