Notes: 4)

The original wood support of the portrait at
Goucher College, Baltimore, is typical sycamore
(Stout, Restoration), and E. Berger affirmed that
the portraits in the Graf collection in Vienna were
on sycamore (Beitrage, p. 198).
Analysis of portraits then in the National Gallery,
London, was carried out by R. Moore at the 
Jodrell Laboratory of the Royal Botanic Gardens, Kew;
London; the 2nd-century panels proved to be lime,
and the later panel fir (Ramer, 'Technology',
p. 4, figs. 2, 3).
Four portraits from Hawara in the Petrie Museum are
on limewood (information at the museum) [52, 67,
70, 40].
Of three portraits examined by the laboratories
of the Louvre, two proved to be on limewood
[including 109), while another,
from Antinoopolis, was on a species of fig,
Ficus carica (Coche de la Ferte, Portraits, p. 11).