## Combination Twills

Another method of obtaining derivative weaves and one quite generally adopted is that of combining two weaves either in their ends or picks. Suppose that from the two weaves shown in Figs. 24 and 25 it is desired to form a new weave by combining them pick and pick; that is, first taking a pick of one weave and then a pick of the other, as in Fig. 26. It will be noticed that the first pick of Fig. 26 is the first pick of Fig. 24; the second pick of Fig. 26 is the first pick of Fig. 25; the third pick of Fig. 26 is the second pick of Fig. 24; the fourth pick of Fig. 26 is the second pick of Fig. 25. This is continued until the picks in both Figs. 24 and 25 are all used, when the weave will be complete.There are numerous other weaves that may be obtained by combining these two weaves pick and pick. Take for example Fig. 27, which is different from the weave shown in Fig. 26 and yet is obtained by combining Figs. 24 and 25 pick and pick. By carefully noticing Fig. 27, it will be seen that in this case the second pick of Fig. 25, instead of the first, is the first pick taken, as was the case with Fig. 26. Thus, the first pick of Fig. 27 is the first pick of Fig. 24; the second pick of Fig. 27 is the second pick of Fig. 25; the third pick of Fig. 27 is the second pick of Fig. 24; the fourth pick of Fig. 27 is the third pick of Fig. 25; and this is continued until all the picks in both weaves are used, when the new weave will commence to repeat. Still another weave may be obtained by commencing with the first pick of Fig. 24 but having for the second pick of the new weave the third pick of Fig. 25. Fig. 28 shows such a weave, and by carefully studying each pick it will be noticed that the first pick of Fig. 28 is the first pick of Fig. 24; the second pick of Fig. 28 is the third pick of Fig. 25; the third pick of Fig. 28 is the second pick of Fig. 24; the fourth pick of Fig. 28 is the fourth pick of Fig. 25; the fifth pick of Fig. 28 is the third pick of Fig. 24; the sixth pick of Fig. 28 is the fifth pick of Fig. 25; and so on until all of the picks in both Figs. 24 and 25 are used, whereupon the weave commences to repeat. In addition to combining weaves pick and pick, they may also be combined by taking 2 picks of one weave and 1 pick of the other or by taking 2 picks of one weave and 2 picks of the other; or in short, almost any method may be adopted, and consequently the number of weaves that may be obtained , is almost without a limit. Weaves should be combined in such a manner that long floats of either warp or filling will be avoided. If the combining of different weaves is practiced, it will be seen that frequently when two weaves are combined by one method long foats will appear, but that by starting on a different pick or by using a different method of combination the same two weaves may be combined without this defect.