Making and Knowing
A minimal edition of BnF Ms Fr 640 in English Translation

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Horsehair sieves

They are made often in Normandy with horsetail hairy that they clean with some washing water because they pick them out with their mouth and separate short and broken ones. They do not make the thread longer than the sieve and it is round. They attach the black or white hair at the two edges of the thread, according to the piece they want to make. And the thread is woven above and below like any other fabric. And passing a small flat stick of ii or three fingers wide between two, they pass between after two bits of hair at each step strike and weave with three steps. The entire sieve is made of xvii bits of hair. They sell them by dozens and each xxx sols. They bring them to Toulouse to send them then to Spain and there, they exchange it with silk.