Early drawings and illuminations : an introduction to the study of illustrated manuscripts, with a dictionary of subjects in the British Museum (1879)
Birch, Walter de Gray, 1842-1924, Jenner, Henry, 1848-1934 · London : Samuel Bagster and Sons · leaf 24
hat is, graduated tones of the same colour, generally black (a method now not unfrequently adopted by artists with an ulterior view of having their work reproduced by photography), that this shifting of the shade, or depth of tone, according to the refrangibility of different colours, can be…
Illumination of books and manuscripts · Manuscripts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
