83. This opening also
illustrates the double or divided transom. The beam ends shown in the
figure project beyond the face of the wall and support an overhanging
coping or cornice. A door-like window, approximating the symmetrical
form described, is seen immediately over the passage-way shown in Pl.
XXII. This form is evidently the result of the partial closing of a
larger rectangular opening.
[Illustration: Fig. 82. An ancient doorway in Canyon de Chelly cliff
ruin.]
[Illustration: Fig. 83. A symmetrically notched doorway in
Mashongnavi.]
[Illustration: Plate XCIII. Upright blocks of sandstone built into
an ancient pueblo wall.]
[Illustration: Fig. 84. A Tusayan notched doorway.]
Fig. 84 shows the usual type of terraced doorway in Tusayan, in which
one jamb is stepped at a considerably greater height than the other.
In Tusayan large openings occur in which only one jamb is stepped,
producing an effect somewhat of that of the large balcony openings with
flights of stone steps at one side, previously illustrated. An opening
of this form is shown in Fig. 85. Both of the stepped doorways,
illustrated above, are provided with transom openings extending from one
roof beam to another. In the absence of a movable door the openings were
made of the smallest size consistent with convenient use. The stepped
form was very likely suggested by the temporary partial blocking up of
an opening with loose, flat stones in such a manner as to least impair
its use.
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