三十六水法
硝石水

硝石水

硝石水

取硝石擣篩，鹽漬令浥浥，納竹筒中，密固口埋地中四尺四寸，五日成水。

End of chapter
又法又法

Text and scans: Shidian Guji (Peking University – ByteDance open ancient texts). Edition details are given per book. Shidian Guji

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