Fig. 2
The pigments and fiber images. a morphology of scraped reddish pigments; b plane-polarized light image of reddish pigments, indicating some organic dye used for the manufacture of pigments (arrow); c morphology of the fiber, a transparent gelatinous membrane at the end of fiber (arrow) indicating mulberry fiber; d crossed polarized light image of microscope, nodes in the lower left indicating mulberry bast fiber image