was obtained from a small potsherd picked up near Washington,
D.C. The woof or cross-threads are small and uniform in thickness, and
pass alternately over and under the somewhat rigid fillets of the web.
The apparent rigidity of these fillets may result from the tightening
of the series when the fabric was applied to the plastic surface of the
vessel.

[Illustration: Fig. 65.--From a fragment of ancient pottery,
District of Columbia.]

I present in Fig. 66 the only example of the impression of a woven
fabric found by the writer in two summers' work among the remains of the
ancient Cliff-Dwellers. It was obtained from the banks of the San Juan
River, in southeastern Utah. It is probably the imprint of the interior
surface of a more or less rigid basket, such as are to be seen among
many of the modern tribes of the Southwest. The character of the warp
cannot be determined, as the woof, which has been of moderately heavy
rushes or other untwisted, vegetable fillets, entirely hides it.

[Illustration: Fig. 66.--From a fragment of ancient Cliff-house
pottery.]

The caves of Kentucky have furnished specimens of ancient weaving of
much interest. One of these, a small fragment of a mat apparently made
from the fiber of bark, or a fibrous rush, is illustrated in Fig. 67.

[Illustration: Fig. 67.--Fabric from a cave in Kentucky.]

This simple combination of the web and woof has been employed by all
ancient weavers who have left us examples of their work. The specimen
given in Fig. 68 is the work of the ancient Lake-Dwellers of
Switzerland. It is a mat plaited or woven of strips of bast, and was
found at Robenhausen, having been preserved in a charred state.[2]
Keller gives another example of a similar fabric of much finer texture
in Fig. 8, Pl. CXXXVI.

[Illustration: Fig. 68.--Fabric from Swiss Lake-Dwellings.]

[Footnote 2: Keller: Lake-Dwellers. Fig. 2, Pl. CXXXIV.]

An illustration of this form of fabric is given by Foster,[3] and
reproduced in Fig. 69.

[Illustration: Fig. 69.--Cloth from a mound, Ohio.]

[Footnote 3: Foster: Prehistoric Times.]

In the same place this author presents another form of cloth shown in my
Fig. 70. In Fig. 71 we have a section of this fabric. These cloths, with
a number of other specimens, were taken from a mound on the west side of
the Great Miama River, Butler County, Ohio. The fabric in both samples
appears to be composed of some material allied to hemp. As