Observance of the laws concerning shatnez became neglected in the 16th century, and the Council of Four Lands found it necessary to enact (1607) a takkanah ("decree") against shatnez, especially warning women not to sew woolen trails to linen dresses, nor to sew a velvet strip in front of the dress, as velvet had a linen back.Gratz, Gesch. vii. 36, Hebrew ed., Warsaw, 1899
