一切草木药畏之。
熟铁∶辛，平，有毒。坚肌耐痛。生铁∶镇心除痫，散瘀消丹。针砂∶作铁索磨 细末
也。
须真钢砂乃可用。铁粉∶钢铁飞炼而成者。铁落∶ 时铁砧上打落者。铁锈∶铁上赤衣
也。
盐汤煮之可作粉。
甘，平，小毒。补中下气，坚肌续绝。治痨伤溏痢，疗疮肿痈疽。
生太山山谷及庐山、齐山、定山石间，二月采。兖州、淳州、杭越间亦有之。生土石间，
作
者为上。
明净者良。细研水飞用。恶磁石，畏碱水，忌一切血。
甘，寒，无毒。镇心清肝，明目发汗，祛风定惊，解毒辟邪，止渴安胎，通脉除烦。
西南诸山谷皆有之，有数十种，以辰州、锦州者为良。光明莹澈者为胜。今世所用，皆
都仇
堪用。惟以光明如镜者入药。
畏磁石、砒霜。乃炼朱砂而成者。
辛，寒，有毒。祛痰除惊，坠胎绝孕，治疮疗风，退热利水。却虫疥虮虱之患，解金银
铜锡
畏磁石，忌一切血。
温燥，有毒。杀虫治疮，劫痰消积。除水肿鼓胀，治瘰 疥癣。
乃水银烧炼而成者。其法用水银一两，白矾二两，食盐一两，同研不见星，铺于铁器内，
以小乌盆覆之，筛皂灰，
盐水和封固盆口，以炭火打二炷香时，取开，则粉升于盆上矣。一两
下疳阴疮，为末掺之。（验方第一。）
[Calomel (Qingfen)] Acrid, neutral, toxic. Brightens the eyes and removes nebulae, relieves heart and abdominal pain, and induces labor in cases of dystocia or malpresentation.
All herbal medicines fear it.
[Refined Iron] Acrid, neutral, toxic. Firmes the muscles and increases tolerance to pain.
[Raw Iron] Calms the heart and eliminates epilepsy, dissipates blood stasis, and resolves erysipelas.
[Iron Needle Sand] Finely ground powder made from iron chains. Only true steel sand should be used.
[Iron Powder] Produced by flying-smelting steel.
[Iron Filings] Pieces struck off onto an anvil during forging.
[Iron Rust] The red coating on iron. It can be processed into powder after boiling in salt water.
[Hematitum (Daizheshi)] Sweet, neutral, slightly toxic. Tonifies the middle jiao, directs rebellious qi downward, firmes the muscles, and reconnects severed tissues. Treats consumptive disorders with loose stools and dysentery; heals sores, swelling, carbuncles, and ulcers.
Grows among the rocks in the valleys of Mount Tai, Lushan, Qishan, and Dingshan; harvested in the second lunar month. Also found in Yanzhou, Chunzhou, Hangzhou, and Yuezhou. Those growing between earth and stone are superior.
Those that are bright and clean are of good quality. Grind finely and use the water-calcination method. Adversely interacts with Magnetitum (Cishi); fears alkaline water; contraindicated with all blood-invigorating herbs.
[Cinnabaris (Zhusha)] Sweet, cold, non-toxic. Calms the heart and clears the liver, brightens the eyes, induces sweating, dispels wind and settles fright, detoxifies and wards off evil pathogens, quenches thirst and calms the fetus, unblocks vessels and relieves irritability.
Found in various valleys in the southwest; there are dozens of varieties, with those from Chenzhou and Jinzhou being the best. Those that are luminous and translucent are superior. The ones used today are generally from Qiujia and are usable. Only those as bright as a mirror are used medicinally.
[Hydrargyrum (Shuiyin)] Fears Magnetitum (Cishi) and Realgar (Pishuang). It is obtained by smelting Cinnabaris (Zhusha).
Acrid, cold, toxic. Resolves phlegm and eliminates fright, causes abortion and sterility, treats sores and wind-diseases, reduces fever and promotes urination. Eliminates infestations of worms, scabies, lice, and nits; resolves toxicity from gold, silver, copper, and tin.
[Fuming Nigrum / Sublimated Mercury preparation] Warm and dry, toxic. Kills parasites and treats sores, forcibly expels phlegm and reduces accumulation. Eliminates edema and distension, treats scrofula and tinea.
It is produced by sublimating Hydrargyrum (Shuiyin). The method is as follows: Take one liang of Hydrargyrum, two liang of Alumen (Baifan), and one liang of Sal (Yanshi). Grind them together until no shiny spots remain. Spread the mixture in an iron vessel, cover it with a small black earthenware basin, sieve soap ash over it, seal the mouth of the basin with salt water and mud, and roast over charcoal fire for the time it takes to burn two incense sticks. Upon opening, the powder will have risen to the top of the basin. One liang is used externally as a powder for treating chancres and yin sores. (Verified Formula No. 1.)