“…The extensional compliances Sll and S, were measured by means of a modified form of the dead-loading extensional creep apparatus of Gupta and Ward, lo and the torsional compliances S, and S, were measured by the simple-shear method." The whole set of nine compliances for the 5 1 sheet had already been measured.12 For this set of results, use was also made of a torsional creep method13J4 to determine all three shear compliances S,, Ss5, and S, (the results were found12 to agree with those determined by the simple-shear method for S , and S,), a 16 compression method15 for S22, an optical interference technique16 for SI2 and S23, and the electron microscope grid method of Ladizesky and for SI3.…”