别伏水銀法

别伏水銀法

水銀一斤,磁石二兩,末之如粉,加曲獸汁即駞尿也。煮之,唯緩火也。不過七日一候,凝與不凝。此蓋丹砂惡磁石、畏鹵鹹水義也。水銀出丹砂,豈不畏惡,與亦同也。故玄珠磁石,亦以爲畏。明彼甜黄,亦是水銀之所畏者。一種有畏,何必外國之物,勝於中華乎。欲人不審磁石之可必用,故奇說化物,欲令志誠者思而以取意焉。其蜜陀僧出於金𨥥藥中,又持參水銀等用之,令爲磁石,臣將不亦宜乎。煮伏之道,不可棄也。

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