Fig.1 Optically derived Fourier Transforms (diffractograms) from the (100), (010) and (001) projections (a), (b) and (c) respectively, of the best model of chitin. (d) is the composite diffractogram of (a), (b) and (c) with the reflections of (b) transferred to the equator; (e) the disorientation and the fading off have been introduced artificially in order to match the X-ray diffraction pattern. The fiber axis is vertical except in (b) where it is perpendicular to the plane of the figure.