The use of simple strands or parts in textile art precedes the use of spun threads, but the one use leads very naturally up to the other. In employing rushes, stems, grasses, etc., the smaller strands were doubled to secure uniformity of size, and when a number of parts were used they were combined into one by twisting or plaiting. In time the advantage in strength and pliability of twisted strands came to be recognized, and this led to the general utilization of fibrous substances, and finally to the manufacture of suitable fibers by manipulating the bark of trees and plants. Spinning was probably not devised until the weaver's art had made considerable advance, but its invention opened a new and broad field and led to the development of a magnificent industry. Semi-rigid fabrics served for a wide range of uses, as already described, but soft and pliable cloths for personal use and ornament were made possible only by the introduction of spinning. On the arrival of the whites the native art was well advanced; thread, cordage, and even ropes of considerable weight were made with a degree of uniformity and refinement that surprises us. The finest threads with which I am acquainted are perhaps not as fine as our no. 10 ordinary spool cotton thread, but we are not justified in assuming that more refined work was not done. What we have is only that which happened to be preserved through burial with the dead or by impression on the plastic surface of clay used in the arts. The materials employed for spinning by the aborigines were greatly diversified. Through historical as well as through purely archeologic sources we learn that both vegetal and animal filaments and fibers were freely used. The inner bark of the mulberry was a favorite material, but other fibrous barks were utilized. Wild hemp, nettles, grasses, and other like growths furnished much of the finer fibers. The hackling was accomplished by means of the simplest devices, such as pounding with hammers or sticks. The hair and sinews of animals were frequently spun into threads and woven into cloth. A few citations from early authors will indicate sufficiently for present purposes the methods of spinning and weaving employed by tribes which, if not in all cases mound-builders, were at least the neighbors and relatives of the mound-building Indians. CLOTHS.