1. A FILAMENTARY YARN COMPRISED OF A PLURALITY OF INTERMINGLED, DIFFERENTIALLY SHRINKABLE, DRAWN CONTINUOUS FILAMENTS OF TWO DIFFERENT COMPOSITIONS, THE FIRST COMPOSITION BEING POLYHEXAMETHYLENE ADIPAMIDE, THE SECOND COMPOSITION BEING TAKEN FROM THE GROUP CONSISTING OF (1) A MELT BLEND OF POLYHEXAMETHYLENE ADIPAMIDE AND POLYVINYL PYRROLIDONE AND (2) A COPOLYMER OF HEXAMETHYLENE ADIPAMIDE AND HEXAMETHYLENE ISOPHTHALAMIDE, SAID FILAMENTS BEING CHARACTERIZED AS TO VISCOELASTIC EQUALITY BY STRESS/ MODULUS RATIOS DIFFERING BY NO MORE THAN 0.001.