plasticine a mould is made in liquid latex rubber. This is
allowed to stand for a couple of days in order to set and
then it is immersed in kerosene over night, during which time it
swells to approximately twice its original size.
From this mould a plaster cast is made and photographed. If a
still larger cast is desired, the process may be repeated
from this point onward to make a cast approximately four times as
large as the original, and the process may be
repeated successively to make a cast of any desired size. This
method of enlargement brings out details that no
enlarged photograph can ever do and it was to illustrate its
possibilities that Plate VI was added.
In the measurements of the cylinder seals the first number gives the height and the second the greatest diameter. In the measurements of the stamp seals the first number gives the greatest diameter, the second gives the cross diameter, and the third the thickness or height, except when the seals are circular, in which case the second of the two numbers gives the thickness or height. All the cylinder seals are perforated lengthwise and the others as indicated. For the reading of the inscriptions on the Arab seals (Nos. 70-72) I am indebted to my colleague, Professor F. V. Winnett, and for assistance in identifying the materials of the seals I am indebted to another colleague, Professor E. S. Moore, Head of the Department of Geology in the University.
I. SEALS OF THE JAMDAT NASR PERIOD (C. 3400 to C. 3000 B.C.):
Created by the Digital
Documentation Center at AUB
in collaboration with Al
Mashriq of Høgskolen i
981129 PN - Email: firstname.lastname@example.org