pright frame capable of sliding vertically in a second frame arranged to have longitudinal motion. The combination of these two motions was sufficient to produce any required design. The principle developed by Duncan was used on embroidery machines, in a modified form, for many years. Of several early attempts, his was the first to realize any form of success.
[Illustration: Figure 4.--WEISENTHAL'S two-pointed needle, 1755.]
[Illustration: Figure 5.--SAINT'S SEWING MACHINE, 1790. (Smithsonian photo 42490-A.)]
[Illustration: Figure 6.--CHAPMAN'S SEWING MACHINE, first eye-pointed needle, 1807. (Smithsonian photo 33299-K.)]
A type of rope-stitching machine, which might be considered unimportant to this study, must be included because of its use of the eye-pointed needle, the needle that was to play a most important part in the later development of a practical sewing machine. The earliest reference to the use of a needle with an eye not being required to be passed completely through th