It is possible that many of the very irregular impressions observed, in which it is so difficult to trace the combinations of the threads, are of distorted fabrics of this class.

This stuff may be woven by hand in a simple frame, or by any of the primitive forms of the loom.

In most cases, so far as the impressions upon pottery show, when this particular combination is employed, the warp is generally very heavy and the woof comparatively light. This gives a cloth differing greatly from the type in appearance; and when, as is usually the case, the woof threads are beaten down tightly, obscuring those of the web, the resemblance to the type is quite lost.

Examples of this kind of weaving may be obtained from the fictile remains of nearly all the Atlantic States.

Fig. 64.—Fabric impressed upon ancient pottery, New York.

The specimen presented in Fig. 64 was obtained from a small fragment of ancient pottery from the State of New York.

It is generally quite difficult to determine which set of threads is the warp and which the woof. In most cases I have preferred to call the more closely placed threads the woof, as they are readily beaten down by a baton, whereas it would be difficult to manipulate the warp threads if so closely placed. In the specimen illustrated, only the tightly woven threads of the woof appear. The impression is not sufficiently distinct to show the exact character of the thread, but there are indications that it has been twisted. The regularity and prominence of the ridges indicate a strong, tightly drawn warp.

Fig. 65.—From a fragment of ancient pottery, District of Columbia.

Fig. 65 represents a form of this type of fabric very common in impressions upon the pottery of the Middle Atlantic States. This specimen 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.

Fig. 66.—From a fragment of ancient Cliff-house pottery.