Fig. 5From: Characterization of seventeenth century papers from Valvasor's collection of the Zagreb ArchdiocesePaper fibres as ween by the optical microscope a flax and hemp fibres in water, ×100, sample 3D; b blue cotton fibre in water, ×100, sample 3D; c blue silk fibre in water, ×100, sample 10D; d flax and hemp in Herzberg reagent, ×100, sample 9DBack to article page