（《本经》中品）
【释名】玄石（《本经》）、处石（《别录》）、 铁石（《衍义》）、吸针石。
藏器曰∶磁石取铁，如慈母之招子，故名。
时珍曰∶石之不磁者，不能引铁，谓之玄石，而《别录》复出玄石于后。
【集解】《别录》曰∶磁石，生泰山川谷及慈山山阴，有铁处则生其阳。采无时。
弘景曰∶今南方亦有好者。能悬吸针，虚连三、四为佳。《仙经》丹房黄白术中多用之。
藏器曰∶出相州北山。
颂曰∶今磁州、徐州及南海傍山中皆有之，磁州者岁贡最佳，能吸铁虚连十数针，或一
、二斤刀器，回转不落者，尤良。采无时。其石中有孔，孔中黄赤色，其上有细毛，功用更
胜。
按《南州异物志》云∶涨海崎头水浅而多磁石，徼外大舟以铁叶固之者，至此皆不得过。
以此言之，海南所出尤多也。
曰∶凡使，勿误用玄中石并中麻石。此二石俱似磁石，只是吸铁不得。而中麻石心有
赤，皮粗，是铁山石也。误服，令人生恶疮，不可疗。真磁石一片，四面吸铁一斤者，此名
延年沙；四面只吸铁八两者，名续采石；四面吸五两者，名磁石。
宗 曰∶磁石其毛轻紫，石上颇涩，可吸连针铁，俗谓之 铁石。其玄石，即磁石之黑
色者。磁磨针锋，则能指南，然常偏东，不全南也。其法取新纩中独缕，以半芥子许蜡，缀
于针腰，无风处垂之，则针常指南。以针横贯灯心，浮水上，亦指南。然常偏丙位，盖丙为
大火，庚辛受其制，物理相感尔。
土宿真君曰∶铁受太阳之气，始生之初，石产焉。一百五十年而成磁石，又二百年孕而
成铁。
【修治】 曰∶凡修事一斤，用五花皮一镒，地榆一镒，故绵十五两。三件并锉。于石
上捶，碎作二、三十块。将石入瓷瓶中，下草药，以东流水煮三日夜，漉出拭干，布裹再捶
细，乃碾如尘，水飞过再碾用。
宗 曰∶入药须火烧醋淬，研末水飞。或醋煮三日夜。
【气味】辛，寒，无毒。权曰∶咸，有小毒。
大明曰∶甘、涩，平。
藏器曰∶性温，云寒误也。
之才曰∶柴胡为之使，杀铁毒，硝金，恶牡丹、莽草，畏黄石脂。
独孤滔曰∶伏丹砂，养汞，去铜晕。
【主治】周痹风湿，肢节中痛，不可持物，洗洗酸 ，除大热烦满及耳聋（《本经》）。
养肾脏，强骨气，益精除烦，通关节，消痈肿鼠 ，颈核喉痛，小儿惊痫，炼水饮之。亦令
人有子（《别录》）。补男子肾虚风虚。身强，腰中不利，加而用之（甄权）。治筋骨羸弱，补
五劳七伤，眼昏，除烦躁。小儿误吞针铁等，即研细末，以筋肉莫令断，与末同吞，下之（大
明）。明目聪耳，止金疮血（时珍）。
【发明】宗 曰∶养肾气，填精髓，肾虚耳聋目昏者皆用之。
藏器曰∶重可去怯，磁石、铁粉之类是也。
时珍曰∶磁石法水，色黑而入肾，故治肾家诸病而通耳明目。一士子频病目，渐觉昏暗
生翳。时珍用东垣羌活胜风汤加减法与服，而以磁朱丸佐之。两月遂如故。盖磁石入肾，镇
养真精，使神水不外移；朱砂入心，镇养心血，使邪火不上侵；而佐以神曲，消化滞气，生
熟并用，温养脾胃发生之气，乃道家黄婆媒合婴 之理，制方者宜窥造化之奥乎？方见孙真
人《千金方》神曲丸，但云明目，百岁可读细书，而未发出药微义也，孰谓古方不可治今病
耶？独孤滔云∶磁石乃坚顽之物，无融化之气，只可假其气服食，不可久服渣滓，必有大患。
夫药以治病，中病则止，砒 犹可饵服，何独磁石不可服耶？磁石既炼末，亦匪坚顽之物，
惟在用者能得病情而中的尔。《淮南万毕术》云∶磁石悬井，亡人自归。注云∶以亡人衣裹
磁石悬于井中，逃人自反也。
【附方】旧三，新一十二。
耳猝聋闭∶ 铁石半钱，入病耳内，铁砂末入不病耳内，自然通透。（《直指方》）
肾虚耳聋∶真磁石一豆大，穿山甲（烧存性研）一字。新绵裹塞耳内，口含生铁一块，觉耳
中如风雨声即通。（《济生方》）
老人耳聋∶磁石一斤捣末，水淘去赤汁，绵裹之。猪肾一具，细切。以水五斤煮石，取
二斤，入肾，下盐豉作羹食之。米煮粥食亦可。（《养老方》）
老人虚损，风湿，腰肢痹痛。磁石三十两，白石英二十两，捶碎瓮盛，水二斗浸于露地。
每日取水作粥食，经年气力强盛，颜如童子。（《养老方》）
阳事不起∶磁石五斤研，清酒渍二七日。
每服三合，日三夜一。（《千金》）
眼昏内障∶磁朱丸∶治神水宽大渐散，昏如雾露中行，渐睹空花，物成二体，久则光不
收，及内障神水淡绿、淡白色者。真磁石（火 、醋淬七次）二两，朱砂一两，神曲（生用）
三
两，为末。更以神曲末一两煮糊，加蜜丸梧子大。每服二十丸，空心饭汤下。服后俯视不见，
仰视微见星月，此其效也。亦治心火乘金、水衰反制之病。久病累发者服之，永不更作。（倪
维德《原机启微集》）
小儿惊痫∶磁石炼水饮之。（《圣济录》）
子宫不收，名 疾，痛不可忍。磁石丸∶用磁石酒浸 研末，米糊丸梧子大。每卧时滑
石汤下四十丸。次早用磁石散，米汤服二钱。散用磁石（酒浸）半两，铁粉二钱半，当归五
钱，为末。
大肠脱肛∶《直指方》∶磁石半两，火 醋淬七次，为末。每空心米饮服一钱。《简便方》∶
用磁石末，面糊调涂囟上。入后洗去。
金疮肠出∶纳入，以磁石、滑石各三两。为末。米饮服方寸匕，日再。（《刘涓子鬼遗
方》）
金疮血出∶磁石末敷之，止痛断血。（《千金方》）
误吞针铁∶真磁石枣核大，钻孔线穿吞，拽之立出。（钱相公《箧中方》）
疔肿热毒∶磁石末，酢和封之，拔根立出。（《外台秘要》）
诸般肿毒∶吸铁石三钱，金银藤四两，黄丹八两，香油一斤，如常熬膏，贴之。（《干
坤秘韫》）
磁石毛
【气味】咸，温，无毒。
【主治】补绝伤，益阳道，止小便白数，治腰脚，去疮 ，长肌肤，令人有子，宜入酒。
藏器曰∶《本经》言石不言毛，毛、石功状殊也。
【《神农本草经》列为中品】
【名称解释】玄石（出自《本经》）、处石（出自《别录》）、铁石（出自《衍义》）、吸针石。
陈藏器说：磁石能吸取铁，就像慈母召唤子女一样，因此得名。
李时珍说：不具磁性的石头，不能吸引铁，称为玄石，但《别录》又在后面重复列出了玄石。
【集解】《别录》说：磁石，产于泰山山谷以及慈山的北面，有铁矿的地方则生长在向阳面。采集没有固定时间。
陶弘景说：现在南方也有好的磁石。能够悬挂并吸附针，虚连三、四根为佳。《仙经》炼丹房黄白术中也多用它。
陈藏器说：出产于相州北山。
苏颂说：现在磁州、徐州以及南海旁边的山中都有，磁州的每年进贡的最为优良，能吸附铁，虚连十数根针，或者一两斤的刀器，旋转而不掉落，尤其好。采集没有固定时间。石头中有孔，孔中呈黄赤色，上面有细毛，功效更好。
据《南州异物志》记载：涨海崎头水浅且多磁石，境外的大船用铁叶加固船底，到了这里都不能通过。由此说来，海南出产的尤其多。
雷敩说：凡使用磁石，不要误用玄中石和中麻石。这两种石头都像磁石，只是不能吸铁。而中麻石心是红色的，皮粗糙，是铁山石。误服后，会让人生恶疮，无法治疗。真正的磁石，一片四面能吸铁一斤的，名叫延年沙；四面只吸铁八两的，名叫续采石；四面吸五两的，名叫磁石。
寇宗奭说：磁石的毛轻紫，石面很涩，可以吸附连接针和铁，俗称 铁石。其玄石，就是磁石中黑色的那种。用磁石磨针锋，就能指南，但常偏东，不完全指南。方法是取新丝绵中的单缕，用半粒芥子大小的蜡，缀在针腰上，在无风处悬挂，那么针常指南。将针横穿灯心草，浮在水面上，也指南。但常偏向丙位，因为丙为大火，庚辛金受其制约，这是物理相互感应的道理。
土宿真君说：铁接受太阳之气，最初生成时，石头就产出来了。一百五十年形成磁石，又过二百年孕育而成铁。
【修治】雷敩说：凡修制一斤，用五花皮一镒，地榆一镒，旧绵十五两。三件一起锉碎。在石头上捶打，碎成二、三十块。将石头放入瓷瓶中，加入草药，用东流水煮三天三夜，捞出擦干，用布包裹再捶细，然后碾成尘状，用水飞法再碾后使用。
寇宗奭说：入药必须火烧后醋淬，研末后水飞。或者醋煮三天三夜。
【气味】辛，寒，无毒。
李权说：咸，有小毒。
马志说：甘、涩，平。
陈藏器说：性温，说是寒是错误的。
徐之才说：柴胡作为使药，能杀铁毒，消熔金属，厌恶牡丹、莽草，畏惧黄石脂。
独孤滔说：能伏丹砂，养汞，去除铜锈。
【主治】周痹风湿，肢节中疼痛，不能持物，身体酸楚不适，清除大热烦闷及耳聋（《本经》）。
滋养肾脏，强健骨气，益精除烦，通利关节，消除痈肿、鼠瘰、颈核、喉痛，小儿惊痫，炼水服用。也能让人有子嗣（《别录》）。补男子肾虚风虚。身体强壮，腰部不利，加此药使用（甄权）。治疗筋骨瘦弱，补五劳七伤，眼昏，除烦躁。小儿误吞针铁等，立即研成细末，用筋肉包裹不让断开，与药末同吞，使其排出（马志）。明目聪耳，止住金创出血（李时珍）。
【发明】寇宗奭说：滋养肾气，填补精髓，肾虚耳聋目昏的都使用它。
陈藏器说：重镇可以去怯，磁石、铁粉之类就是如此。
李时珍说：磁石效法水，色黑而入肾，所以治疗肾家各种疾病而通耳明目。一位读书人频繁患眼病，渐渐觉得昏暗生翳。李时珍用东垣羌活胜风汤加减法让他服用，并以磁朱丸辅助。两个月后恢复如初。大概磁石入肾，镇养真精，使神水不外移；朱砂入心，镇养心血，使邪火不上侵；而佐以神曲，消化滞气，生熟并用，温养脾胃发生之气，这是道家黄婆媒合婴儿的道理，制方者应该窥探造化的奥秘吧？方剂见于孙真人《千金方》神曲丸，只说明目，百岁可读细书，而没有揭示药物的微义，谁说古方不能治今病呢？独孤滔说：磁石是坚顽之物，没有融化之气，只能借其气服食，不可久服渣滓，必有大患。药物是用来治病的，中病即止，砒霜还可以饵服，为何唯独磁石不可服呢？磁石既然炼成末，也不是坚顽之物，关键在于使用者能否准确对症。《淮南万毕术》说：磁石悬于井中，亡人自归。注解说：用亡人的衣服包裹磁石悬于井中，逃跑的人自然会返回。
【附方】旧方三个，新方十二个。
耳猝聋闭：铁石半钱，放入患病耳朵内，铁砂末放入不患病耳朵内，自然通透。（《直指方》）
肾虚耳聋：真磁石如豆大一粒，穿山甲（烧存性研）一字。新绵包裹塞入耳内，口含生铁一块，感觉耳中如风雨声即通。（《济生方》）
老人耳聋：磁石一斤捣末，水淘去赤汁，绵包裹。猪肾一个，细切。用水五斤煮石，取二斤，加入肾，下盐豉做羹食用。用米煮粥吃也可以。（《养老方》）
老人虚损，风湿，腰肢痹痛。磁石三十两，白石英二十两，捶碎盛于瓮中，水二斗浸于露地。每日取水作粥食，经过一年气力强盛，容颜如童子。（《养老方》）
阳事不起：磁石五斤研，清酒浸泡二十七天。每次服用三合，日三次夜一次。（《千金方》）
眼昏内障：磁朱丸：治疗神水宽大渐散，昏如雾露中行，渐渐看到空花，物体变成两个影像，久了则光不收，以及内障神水淡绿、淡白色者。真磁石（火煅、醋淬七次）二两，朱砂一两，神曲（生用）三两，研为末。再用神曲末一两煮糊，加蜜制成梧桐子大的丸。每次服用二十丸，空腹饭汤送下。服药后俯视不见，仰视微见星月，这就是药效。也治疗心火乘金、水衰反制之病。久病累发者服用，永不复发。（倪维德《原机启微集》）
小儿惊痫：磁石炼水服用。（《圣济录》）
子宫不收，名阴挺，痛不可忍。磁石丸：用磁石酒浸后研末，米糊丸梧桐子大。每晚睡觉时用滑石汤送下四十丸。次日早晨用磁石散，米汤服二钱。散剂用磁石（酒浸）半两，铁粉二钱半，当归五钱，研为末。
大肠脱肛：《直指方》：磁石半两，火煅醋淬七次，研为末。每次空腹米饮服一钱。《简便方》：用磁石末，面糊调涂囟门上。洗后去掉。
金疮肠出：纳入肠管，用磁石、滑石各三两。研为末。米饮服方寸匕，每天两次。（《刘涓子鬼遗方》）
金疮血出：磁石末敷之，止痛断血。（《千金方》）
误吞针铁：真磁石枣核大，钻孔线穿吞，拽之立出。（钱相公《箧中方》）
疔肿热毒：磁石末，醋调和封之，拔根立出。（《外台秘要》）
诸般肿毒：吸铁石三钱，金银藤四两，黄丹八两，香油一斤，如常熬膏，贴之。（《乾坤秘韫》）
磁石毛
【气味】咸，温，无毒。
【主治】补绝伤，益阳道，止小便白浊频数，治腰脚，去疮疡，长肌肤，令人有子，宜入酒。
陈藏器说：《本经》言石不言毛，毛、石功效状态不同。
[Classified as Middle Grade in the *Shennong Bencao Jing*]
**Names:** Xuan Shi (Black Stone, from *Bencao Jing*), Chu Shi (Dwelling Stone, from *Bielu*), Tie Shi (Iron Stone, from *Yanyi*), Xi Zhen Shi (Needle-Attracting Stone).
Chen Cangqi stated: Magnetite attracts iron just as a loving mother calls her children; hence its name.
Li Shizhen stated: Stones that lack magnetism cannot attract iron and are called Xuan Shi, yet *Bielu* lists Xuan Shi again later.
**Collection and Explanation:** *Bielu* states: Magnetite is produced in the valleys of Mount Tai and on the north-facing slopes of Ci Mountain; where there is iron ore, it grows on the sunny side. It can be collected at any time.
Tao Hongjing stated: Good quality magnetite is now also found in the south. It should be able to suspend and attract needles; attracting three or four needles loosely is considered excellent. It is frequently used in alchemical arts such as those in the *Xian Jing*.
Chen Cangqi stated: It is produced in the northern mountains of Xiangzhou.
Su Song stated: It is now found in Cizhou, Xuzhou, and the mountains near the South Sea. The annual tribute from Cizhou is the best; it can attract iron, suspending ten or more needles loosely, or even knives and vessels weighing one or two jin, rotating without falling off, which is especially good. It can be collected at any time. The stone has pores; the inside of the pores is yellowish-red, and fine hairs grow on the surface, which enhances its efficacy.
According to *Nanzhou Yiwu Zhi*: In the shallow waters of Zhanghai Qitou, there is much magnetite. Large foreign ships reinforced with iron sheets cannot pass through here. This indicates that the output from Hainan is particularly abundant.
Lei Xiao stated: When using it, do not mistake Xuanzhong Shi and Zhongma Shi for it. These two stones resemble magnetite but cannot attract iron. Zhongma Shi has a red core and rough skin; it is an iron mountain stone. Accidental ingestion causes malignant sores that are incurable. True magnetite that attracts one jin of iron on all four sides is called Yannian Sha; that which attracts eight liang is called Xucai Shi; that which attracts five liang is called Cishi.
Kou Zongshi stated: The hairs of magnetite are light purple, and the stone surface is quite rough; it can attract and connect needles and iron, commonly known as Tie Shi. Its Xuan Shi refers to the black variety of magnetite. Rubbing the tip of a needle with magnetite makes it point south, though it often deviates slightly eastward rather than pointing due south. The method is to take a single thread from new cotton wadding, attach a piece of wax the size of half a mustard seed to the middle of the needle, and hang it in a windless place; the needle will then consistently point south. Alternatively, thread the needle horizontally through a rush pith and float it on water; it also points south, though often towards the Bing position. This is because Bing represents Great Fire, and Geng/Xin (Metal) are controlled by it, demonstrating physical mutual induction.
Tuxu Zhenjun stated: Iron receives the Qi of the Sun. At the beginning of its formation, stones are produced. After 150 years, magnetite forms; after another 200 years, it gestates into iron.
**Processing:** Lei Xiao stated: For every jin to be processed, use one yi of Wuhua Pi, one yi of Diyu, and fifteen liang of old silk floss. Chop all three ingredients together. Pound them on a stone until broken into twenty or thirty pieces. Place the stone in a porcelain bottle, add the herbal medicines, and boil in running water from the east for three days and nights. Strain, wipe dry, wrap in cloth, pound again until fine, then grind into dust. Use water flotation (Shui Fei) to further grind before use.
Kou Zongshi stated: For medicinal use, it must be calcined by fire, quenched in vinegar, ground into powder, and subjected to water flotation. Alternatively, boil in vinegar for three days and nights.
**Flavor and Nature:** Pungent, Cold, Non-toxic.
Li Quan stated: Salty, slightly toxic.
Ma Zhi stated: Sweet, Astringent, Neutral.
Chen Cangqi stated: Warm in nature; the claim of Cold is erroneous.
Xu Zhicai stated: Chai Hu acts as its guiding herb; it neutralizes iron toxicity and dissolves metals. It is incompatible with Mudan and Mangcao, and fears Huangshizhi.
Dugu Tao stated: It can subdue Cinnabar, nourish Mercury, and remove copper rust.
**Indications:** Treats generalized Bi syndrome with Wind-Dampness, pain in limbs and joints, inability to hold objects, body ache and discomfort, excessive heat, vexation, fullness, and deafness (*Bencao Jing*).
Nourishes the Kidney, strengthens bone Qi, benefits Essence, relieves vexation, unblocks joint passages, eliminates carbuncles, scrofula, cervical masses, and sore throat, pediatric convulsions and epilepsy. Decocted in water for drinking. It also promotes fertility (*Bielu*). Tonifies Kidney deficiency and Wind deficiency in men. Strengthens the body, alleviates lumbar stiffness, and is added to formulas for these conditions (Zhen Quan). Treats emaciation of sinews and bones, tonifies Five Exhaustions and Seven Injuries, blurry vision, and relieves irritability. If children accidentally swallow needles or iron, grind into fine powder, wrap in meat/flesh without breaking, and swallow together with the powder to expel it (Ma Zhi). Brightens eyes and improves hearing, stops bleeding from traumatic wounds (Li Shizhen).
**Elucidation:** Kou Zongshi stated: Nourishes Kidney Qi, fills Essence, and is used for Kidney deficiency causing deafness and blurry vision.
Chen Cangqi stated: Heavy substances dispel fearfulness; Magnetite and Iron Powder are examples.
Li Shizhen stated: Magnetite follows the properties of Water, is black in color, and enters the Kidney meridian; thus, it treats various Kidney diseases, improves hearing, and brightens the eyes. A scholar frequently suffered from eye disease, gradually developing dimness and corneal opacity. Li Shizhen prescribed modified Qianghuo Shengfeng Tang from Dongyuan, assisted by Cizhu Wan. Within two months, his condition returned to normal. Essentially, Magnetite enters the Kidney to stabilize and nourish True Essence, preventing Shen Water from dispersing externally; Cinnabar enters the Heart to stabilize and nourish Heart Blood, preventing pathogenic Fire from invading upward; assisted by Shen Qu to digest stagnant Qi, using both raw and cooked forms to warm and nourish the generating Qi of the Spleen and Stomach. This aligns with the Daoist principle of the Yellow Mother acting as a matchmaker for the Infant. Prescribers should contemplate the mysteries of creation! The formula appears in Sun Simiao’s *Qianjin Fang* as Shen Qu Wan, merely stating it brightens the eyes allowing one to read small print at age hundred, without revealing the subtle meaning of the herbs. Who says ancient formulas cannot treat modern diseases? Dugu Tao said: Magnetite is a hard and stubborn substance lacking melting Qi; it can only be taken for its Qi, and long-term consumption of the dregs will cause great harm. Medicines are for treating diseases; once the disease is cured, stop taking them. Even Arsenic can be ingested in controlled doses; why specifically forbid Magnetite? Once refined into powder, Magnetite is no longer hard and stubborn; the key lies in whether the practitioner accurately targets the pathology. *Huainan Wabi Shu* states: Hanging Magnetite in a well causes missing persons to return themselves. The annotation explains: Wrapping the deceased's clothes around Magnetite and hanging it in the well causes fugitives to return involuntarily.
**Attached Formulas:** Three old formulas, twelve new formulas.
Sudden Deafness and Ear Obstruction: Half a qian of Tie Shi inserted into the affected ear; Iron Sand powder inserted into the unaffected ear. Natural patency will occur (*Zhizhi Fang*).
Kidney Deficiency Deafness: One bean-sized piece of true Magnetite; one zi of Pangolin Scale (calcined to retain character, ground). Wrap in new cotton and insert into the ear; hold a piece of raw iron in the mouth. Patency occurs when a sound like wind and rain is felt in the ear (*Jisheng Fang*).
Elderly Deafness: One jin of Magnetite ground to powder, washed with water to remove red juice, wrapped in cotton. One pig kidney, finely chopped. Boil the stone in five jin of water until reduced to two jin, add the kidney, season with salted black beans, and eat as soup. Eating congee made with rice is also acceptable (*Yanglao Fang*).
Elderly Deficiency, Wind-Dampness, Lumbar and Limb Bi Pain: Thirty liang of Magnetite, twenty liang of White Quartzine, crushed and stored in a jar. Soak in two dou of water exposed to dew outdoors. Take this water daily to make congee. After a year, Qi and strength become robust, and the complexion resembles that of a child (*Yanglao Fang*).
Impotence: Five jin of Magnetite ground, soaked in clear wine for twenty-seven days. Take three he per dose, three times daily and once at night (*Qianjin Fang*).
Blurry Vision and Internal Cataracts: Cizhu Wan: Treats widening and gradual dispersion of Shen Water, vision dim like walking in fog/mist, seeing empty flowers, diplopia, and prolonged loss of light focus, as well as internal cataracts with pale green or pale white Shen Water. Two liang of true Magnetite (calcined and quenched in vinegar seven times), one liang of Cinnabar, three liang of Shen Qu (raw), ground to powder. Further thicken one liang of Shen Qu powder with boiled paste, add honey, and form pills the size of wheat seeds. Take twenty pills on an empty stomach with rice soup. After administration, looking down reveals nothing, while looking up reveals faint stars/moon; this indicates efficacy. Also treats Heart Fire overacting on Metal, or Water deficiency counter-controlling. For chronic, recurrent cases, continuous use prevents recurrence (Ni Weide, *Yuanji Qiwei Ji*).
Pediatric Convulsions and Epilepsy: Decoct Magnetite in water for drinking (*Shengji Lu*).
Uterine Prolapse (Yin Ting), unbearable pain: Cishi Wan: Soak Magnetite in wine, grind to powder, bind with rice paste into pills the size of wheat seeds. Take forty pills with Slippery Stone decoction before sleep. The next morning, take Cishi San, two qian with rice soup. The powder consists of half a liang of Magnetite (wine-soaked), two and a half qian of Iron Powder, and five qian of Dang Gui, ground to powder.
Rectal Prolapse: *Zhizhi Fang*: Half a liang of Magnetite, calcined and quenched in vinegar seven times, ground to powder. Take one qian with rice drink on an empty stomach. *Jianbian Fang*: Apply Magnetite powder mixed with flour paste to the fontanelle. Wash off afterwards.
Traumatic Wound with Evisceration: Reduce the intestine, then administer a mixture of three liang each of Magnetite and Slippery Stone, ground to powder. Take one fangcun bi with rice drink, twice daily (*Liu Juanzi Guiyi Fang*).
Traumatic Bleeding: Apply Magnetite powder to stop pain and bleeding (*Qianjin Fang*).
Accidental Swallowing of Needles/Iron: A date-pit sized piece of true Magnetite, drilled and threaded with string, swallowed. Pulling the string extracts it immediately (Qian Xianggong, *Qie Zhong Fang*).
Carbuncles and Heat Toxins: Apply Magnetite powder mixed with vinegar to seal the area, extracting the root immediately (*Waitai Miyao*).
Various Swellings and Toxins: Three qian of Needle-Attracting Stone, four liang of Honeysuckle Vine, eight liang of Red Lead, one jin of Sesame Oil. Boil into a plaster as usual and apply (*Qiankun Mi Yun*).
Magnetite Hairs
**Flavor and Nature:** Salty, Warm, Non-toxic.
**Indications:** Tonifies severe injuries, benefits Yang pathways, stops frequent cloudy urination, treats lumbar and foot conditions, heals sores, promotes flesh growth, promotes fertility, and is suitable for infusion in wine.
Chen Cangqi stated: *Bencao Jing* mentions the stone but not the hair; the efficacy and state of the hair and stone are distinct.