Fig. 6—Orientation curves for quartz in corrugated veinlets in ab, bc and ac sections of schist No. 4457 from Patearoa, Otago (Turner, 1938, Fig. 7). Broken and full curves for ac represent two different sets of limbs in the same folded vein. The bc curves are based upon measurements of two different veinlets or two sectors of the same veinlet. Fig. 7—Orientation curves for quartz in ab, bc and ac sections of quartz veins lying parallel to schistosity (ab) in schist No. 4487 from Waipori, Otago (Turner, 1938a, Figs. 4, 5, 6). A second illustration is furnished by the fabric of corrugated veinlets of quartz crossing the main cleavage of a schist (No. 4457) from Patearoa, Otago (Turner, 1938, pp. 452–458). The orientation curves for Z' as measured in ab, bc and ac sections are reproduced in Fig. 6, while Fig. 8 shows the positions of maxima deduced from these as plotted on a Schmidt equal-area projection of the lower hemisphere* The original figure (Turner, 1938, Fig. 9) represents a stereographic projection of the upper hemisphere. to allow comparison with Fig. 9. The latter is a fabric diagram representing the distribution of the optic axes of 100 quartz grains measured in the ac section by Dr. E. Ingerson, using a universal stage. The positions of the maximum A–G and the most important of the submaxima, B, correspond closely in the two diagrams. The lesser submaximum X, however, is only imperfectly indicated in Fig. 9. It should be noted that discrepancies in the comparison are possibly due as much to the fewness of grains measured for Fig. 9 as to lack of accuracy in Fig. 8.