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

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Fine sieves of raw silk

Tammy of raw silk is made on a weaver, to make very fine and delicate sieves. And for that effect, you must not choose raw silk whitened by sulfur smoke: this covers the silk in a sticky vapor that would hold the flour and in the end would prevent it from

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passing through so well. But for this effect, choose yellow and natural raw silk because it is stronger and rejects flour as horsehair does.