“…Microand macrofibrillar slippage contributes primarily t o this process. T h e former is visualized by a change in the shape of the macrofibrils with drawing, distinctly seen in Figure 6 and shown schematically in Figure 8 (the microfibrillar slippage can also be deduced from the observed constancy of the X-ray long period and of the transverse sizes of microfibrils on drawing [10,11,87,88]. T h e latter can be inferred from a comparative analysis of the sample deformation and that of recrystallized spherulites.…”