| Old Master drawings are
popularly identified with the handsome brown color of their ink. Formerly
these sheets were commonly described with the misnomer "sepia". It is usual
today to describe all such drawings as "pen and brown ink" or "brush and
brown wash", because, although a number of different inks were used, it is
difficult to distinguish between them. Of the two primary kinds of ink,
bistre presents more or less the original appearance at the time of use, and
iron-gall ink turns from black to brown with time.
The term sepia, which properly denotes the
brownish-black ink made from the dark liquid of cuttlefish, traditionally
misused as a blanket term for the brown ink of old master drawings appears
to have come into use only in the eighteenth century and to have gained
popularity in the nineteenth. Genuine sepia inks are sold as cakes of
pigment which are mixed with water by the artist before use.
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