咸，寒，有小毒。生池泽草树间，形似小螺，白色，头有四黑角。以形圆而大者为胜
小者不堪用。
辛，平，有毒。中其毒者，惟 鸪肉可解，恶铅，畏水银。
方中金簿，今世之人不识其为何等大，惟依据几片、几枚之数用之。非亲视唐簿，何以
有所
簿一钱重也，据此
造方寸金一千片。
辛、苦。涩于铜坑中及石间采之，方圆不定，其色青黄如铜，不从 炼，故号自
火醋淬九次，研末，水飞用。
辛、酸、涩，微毒。取铜器上绿色者淘洗用之，近时人以醋制铜生绿，取收，晒干。
即铅。
甘，寒，小毒。凡用以铁铫溶化，泻瓦上滤去渣脚，如此数次，收用。其黑锡灰
溶出之物也，白锡灰不入药。
甘、辛，寒，此即化铅所作胡粉也，通名官粉。
造胡粉法，每铅百斤，熔化削成薄片，卷作筒，安木甑内，甑下甑中各安醋一瓶，外以
盐泥
为度。不尽者留炒作黄丹
灰按成沟，纸隔数层，置粉于上，将干截成
方中所用胡粉皆此物也，今人以蛤灰飞过名之胡粉，用者宜审。
辛、咸，寒。以水飞过，澄干，微火炒紫色，安地上去火毒入药用。伏砒，制 砂。
炒铅丹法、用铅一斤，硫黄十两，硝石一两，熔铅成汁，下醋点之，滚沸时下硫一块，
少顷下硝少许，沸定，再
连须、葱白汁拌丹，慢煎
入药光明丹佳，市中有土黄色者是炒丹不成者，勿用。
咸味，寒性，有小毒。生长在池塘、沼泽及草木之间，形状像小螺蛳，颜色白色，头部有四只黑色的角。以形体圆大而大的为优，小的不堪使用。
辛味，平性，有毒。中毒者，只有鹧鸪肉可以解毒，畏忌铅，畏惧水银。方书中的金箔，今人不知其究竟有多大，只是依据几片、几枚的数量来使用。如果不是亲眼见过唐代的簿册（标准），怎么知道一钱重的金能造出多少呢？据此推算，一钱金可造出一寸见方的金箔一千片。
辛味、苦味。涩滞于铜矿坑中及石缝间开采出来，方圆不定，颜色青黄如铜，不经过冶炼，所以号称“自生”。用火醋淬炼九次，研成粉末，用水飞法处理使用。
辛味、酸味、涩味，微毒。取铜器上生成的绿色物质淘洗后使用，近来的人用醋制铜使其生成绿色，收取晒干。
就是铅。甘味，寒性，有小毒。凡是用它，要用铁锅熔化，倒在瓦上滤去渣滓脚料，如此数次，收集使用。其黑锡灰是熔化后析出的物质，白锡灰不入药。
甘味、辛味，寒性，这就是由化铅制成的胡粉，通称官粉。制造胡粉的方法：每百斤铅，熔化后削成薄片，卷成筒状，安置在木甑内，甑下和甑中各放一瓶醋，外部用盐泥密封，直到……为止。未反应完的残留物留下炒制成黄丹。将灰按成沟状，用纸隔开数层，把粉放在上面，将干时截取成……方中所用的胡粉都是这种物质，现在的人用蛤灰飞过（水飞）称为胡粉，使用者应当审慎辨别。
辛味、咸味，寒性。用水飞法处理，澄清干燥，用微火炒至紫色，放置在地上以去除火毒，然后入药。能伏制砒霜，制约朱砂。炒制铅丹的方法：用铅一斤，硫黄十两，硝石一两，熔化铅成汁液，加入醋点之，滚沸时下入一块硫黄，一会儿下入少许硝石，沸腾停止后，再用连须葱白汁拌丹，慢煎……入药用光明丹为佳，市售中有土黄色的是炒制不成丹的，不要使用。
Salty, cold, slightly toxic. Grows in ponds, marshes, and among grass and trees; its shape resembles a small snail, is white in color, and has four black horns on its head. Those that are round and large are superior; those that are small are unsuitable for use.
Acrid, neutral, toxic. For poisoning by it, only the meat of *Ardeola bacchus* (Chinese pond heron) can detoxify it. It is adverse to lead and fears mercury. In medical formularies, gold leaf (*Jinbo*, Gold Leaf) is described, but modern people do not know its actual size, relying merely on counts of pieces or sheets. Without personally viewing Tang dynasty standards, how could one know? Based on this, one qian of gold can be made into one thousand square-inch sheets.
Acrid, bitter. Found涩ly in copper mines and stone crevices; its shape and size are irregular, with a greenish-yellow color resembling copper. It does not undergo smelting, hence called "self-born." It is quenched nine times in vinegar over fire, ground into powder, and processed using the water-flying method (*Shuifei*, levigation) for use.
Acrid, sour, astringent, slightly toxic. The green substance found on copper vessels is taken, washed, and used. Recently, people have produced green copper by treating copper with vinegar, collecting and sun-drying it.
This is lead (*Qian*, Lead). Sweet, cold, slightly toxic. When used, it must be melted in an iron pot, poured onto tiles to filter out dregs, repeated several times, then collected for use. The residue from melting black tin ash is usable, but white tin ash is not used in medicine.
Sweet, acrid, cold. This is Hu Fen (Lead Carbonate), also commonly known as Guan Fen (Official Powder), made by processing lead. The method for making Hu Fen: Take 100 jin of lead, melt it, shave it into thin slices, roll them into tubes, and place them inside a wooden steamer (*Zeng*). Place a bottle of vinegar at the bottom and another inside the steamer. Seal the exterior with salt mud until... The remaining residue is left to be stir-fried into Huang Dan (Red Lead). Arrange the ash in trenches, separate with layers of paper, place the powder on top, and when nearly dry, cut into... All Hu Fen used in formulas is this substance. Currently, people call Hu Fen processed with clam ash via levigation "Hu Fen"; users should exercise caution.
Acrid, salty, cold. Processed by levigation, clarified, dried, and stir-fried over low heat until purple. Placed on the ground to remove fire toxicity before medicinal use. It can suppress arsenic and control cinnabar. Method for stir-frying Qian Dan (Lead Oxide): Use 1 jin of lead, 10 liang of sulfur, and 1 liang of saltpeter. Melt the lead into liquid, add vinegar drops; when boiling, add a piece of sulfur, then a little saltpeter after a short while. Once boiling subsides, mix with juice from scallions with roots, and slow-cook... For medicinal use, Guang Ming Dan (Bright Red Lead) is preferred. Those sold in markets with a earthy yellow color are improperly fried and should not be used.