The Making of the Glencairn Methuselah Window: Page 13

FILM FOR BACK AND ON LIGHT PART OF FACE
Backing of Feb 17th - 18th 1927

10 parts
1 part jet of April 19 1927
1 part burnt modelling clay

For over hair and beard and under eyebrows

200 parts of the above
30 warm rich brown tracing color

After the films were somewhat dry I scratched cross-hatched lines <small sample of cross-hatching> where the light part of face was - I did the same on the back making cross hatching lines larger and more irregular

The film in the back was put on in a broken way with a little flat Japanese water color brush. The same was mixed with turpentine as above described and mixed with a little thin turpentine