味辛、咸，平，无毒。主蛊毒及蛇、菜、肉诸毒，恶疮。不可久服，令人瘦。一名推
青，一名推石。生益州川谷。
陶隐居云∶俗方及《仙经》并无用此者，亦相与不复识。
味辛，寒，无毒。主辟恶，熨目赤烂，红色似玛瑙，亦美石之类，重宝也。生西国玉
石间，来中国者皆以为器，亦云玛瑙珠。是马口中吐出，多是胡人谬言，以贵之耳。（新补
见陈藏器。）
陈藏器∶玛瑙出日本国，用砑木不热为上，砑木热非真也。
衍义曰∶玛瑙，非石、非玉，自是一类。有红、白、黑色三种，亦有其纹如缠丝者，出
西裔
佳。彼土人小者碾为好玩之物，大者碾为器。今古方入药，绝可用。此物，西方甚重，故佛
经多言之。其马口吐出，既知谬言，不合编入。
\r太阴玄精\pd44.bmp\r
味咸，温，无毒。主除风冷，邪气湿痹，益精气，妇人痼冷、漏下，心腹积聚冷
气，止头疼，解肌。其色青白、龟背者良，出解县。（今附）
图经曰∶太阴玄精，出解县，今解池及通、泰州积盐仓中亦有之。其色青白、龟背者佳。
采
无
时。解池又有盐精，味更咸苦，青黑色，大者三、二寸，形似铁铧嘴，三月、四月采。亦主
除风冷，无毒。又名泥精，盖玄精之类也。古方不见用者，近世补药及治伤寒多用之。其着
者，治伤寒三日，头痛，壮热，四肢不利。正阳丹∶太阴玄精、硝石、硫黄各二两， 砂一
两，四
物都细研，入瓷瓶子中，固济以火半斤，于瓶子周一寸， 之，约近半日，候药青紫色，住
火。待冷取出，用腊月雪水拌令匀湿，入瓷罐子中，屋后北阴下阴干。又入地埋二七日，取
出细研，以面糊和为丸，如鸡头实大。先用热水浴后，以艾汤研下一丸。以衣盖，汗出为瘥
。
唐本余∶近地亦有，色赤、青白，片大不佳。沈存中云∶大卤之地，即生阴精石。
衍义曰∶太阴玄精石，合他药，涂大风疾，别有法。阴证伤寒，指甲、面色青黑，六脉
沉细
而
疾，心下胀满、结硬、燥渴，虚汗不止，或时狂言，四肢逆冷，咽喉不利，腹疼，亦须佐他
药兼之。《图经本草》已有法，唯出解州者良。
【肤青】
味辛、咸，性平，无毒。主治蛊毒以及蛇、菜、肉等各种毒物引起的中毒，还有恶疮。不可长期服用，否则会导致人体消瘦。又名推青，又名推石。产于益州的川谷地带。
陶隐居说：世俗的医方及《仙经》中都没有使用此药的记载，人们也互相不再认识它了。
【玛瑙】
味辛，性寒，无毒。主治驱除邪恶之气，熨敷治疗眼睛红肿溃烂。颜色红得像玛瑙一样，也是美石的一类，是珍贵的宝物。产于西域玉石之间，来到中国的都被制成器物，也称为玛瑙珠。说是马口中吐出来的，多是胡人的谬传，为了抬高其身价罢了。（新补充内容见陈藏器著作。）
陈藏器说：玛瑙出产于日本国，用它研磨木材不发热的是上品，研磨时发热就不是真品。
《衍义》说：玛瑙，既不是石头，也不是玉，它是独立的一类。有红、白、黑三种颜色，也有纹理像缠丝一样的，产自西边的地区品质较好。当地百姓将小的碾磨成玩赏之物，大的碾磨成器物。现在的古方入药，完全可以使用。这种物品，西方人非常看重，所以佛经中多有关于它的记载。既然知道马口吐出是谬传，就不应该编录进去。
【太阴玄精】
味咸，性温，无毒。主治驱除风冷、邪气湿痹，补益精气，治疗妇人久治不愈的寒冷症、漏下（非经期阴道出血），心腹积聚冷气，止头痛，解肌表之邪。颜色青白、形状像龟背的是佳品，产于解县。（今附）
《图经》说：太阴玄精产于解县，现在解池以及通州、泰州积盐仓中也有出产。颜色青白、形状像龟背的品质好。采集没有固定时间。解池还有一种盐精，味道更咸苦，呈青黑色，大的有三四寸长，形状像铁犁铧嘴，在三月、四月采集。也主治驱除风冷，无毒。又名泥精，大概是玄精之类。古方中不见使用，近代补药及治疗伤寒多用此药。其中结晶状的，用于治疗伤寒三天后出现的头痛、高热、四肢不利。正阳丹配方：太阴玄精、硝石、硫黄各二两，砂一两，将四种药物都细细研磨，放入瓷瓶中，用泥密封加固，用火加热半斤炭火的热量，围绕瓶子周围一寸处煅烧，大约半天时间，等到药物变成青紫色，停止加热。待冷却后取出，用腊月雪水拌和均匀湿润，放入瓷罐中，置于房屋后面背阴处阴干。又埋入地下二十七天，取出细细研磨，用面糊调和做成丸药，大小如鸡头实。先用热水洗澡后，用艾汤送服一丸。盖上衣服，出汗即痊愈。
《唐本余》说：近地也有出产，颜色赤红、青白，片状的不佳。沈存中说：大卤之地，就会生长阴精石。
《衍义》说：太阴玄精石，配合其他药物，涂抹治疗大风疾（麻风病等严重皮肤病），另有方法。对于阴证伤寒，出现指甲、面色青黑，六脉沉细而快，心下胀满、结硬、燥渴，虚汗不止，有时胡言乱语，四肢逆冷，咽喉不利，腹痛等症状，也必须佐以其他药物兼治。《图经本草》已有相关方法，只有出自解州的品质良善。
[Fuqing]
Taste: Acrid, Salty. Nature: Neutral. Toxicity: Non-toxic. Indications: Mainly treats gu poison (a type of ancient Chinese poisoning or parasitic disease) and various poisons from snakes, vegetables, and meat, as well as malignant sores. It should not be taken for a long time, as it causes emaciation. Also known as Tuiqing, also known as Tuishi. Grows in the valleys of Yizhou.
Tao Hongjing stated: Neither common prescriptions nor the "Immortal Classics" use this substance, and people no longer recognize each other's knowledge of it.
[Manato / Agate]
Taste: Acrid. Nature: Cold. Toxicity: Non-toxic. Indications: Mainly repels evil influences, and is used to compress red, rotting eyes. Its red color resembles Manato (Agate); it is a type of beautiful stone and a precious treasure. It grows among jade stones in Western Regions; those brought to China are made into vessels, also called Manato pearls. The claim that it is spat out by horses is mostly false talk by Hu people to inflate its value. (New supplement found in Chen Cangqi's works.)
Chen Cangqi stated: Manato comes from the country of Japan. When grinding wood with it, if it does not become hot, it is superior; if it becomes hot, it is not genuine.
Yanyi states: Manato is neither stone nor jade; it belongs to a distinct category. There are three colors: red, white, and black. Some have patterns like twisted silk. Those from the Western borders are excellent. Local people grind small ones into playthings and large ones into vessels. In modern ancient prescriptions, it can be used medicinally. This substance is highly valued in the West, hence frequently mentioned in Buddhist scriptures. Since the story of it being spat from a horse's mouth is known to be false, it should not have been included.
[Taiyin Xuanjing]
Taste: Salty. Nature: Warm. Toxicity: Non-toxic. Indications: Mainly dispels wind-cold, pathogenic qi, damp-bi obstruction, benefits essence and qi, treats chronic cold conditions and leukorrhea/menorrhagia in women, accumulation of cold qi in the heart and abdomen, stops headache, and resolves the muscle layer. Those with greenish-white color and a turtle-shell-like texture are good; they come from Jie County. (Currently appended.)
Tujing states: Taiyin Xuanjing comes from Jie County. Currently, it is also found in the salt pools of Jiechi and in the salt warehouses of Tongzhou and Taizhou. Those with greenish-white color and a turtle-shell texture are excellent. There is no specific season for harvesting. Jiechi also produces salt essence, which tastes more salty and bitter, is dark green-black, up to two or three inches in size, shaped like an iron plowshare tip, harvested in March and April. It also mainly dispels wind-cold and is non-toxic. Also known as Nijing, likely a type of Xuanjing. It was not used in ancient prescriptions but is commonly used in recent times for tonics and treating Shanghan (Cold Damage). Specifically, crystallized forms treat headache, high fever, and limb stiffness after three days of Shanghan.
Zhengyang Dan formula: Taiyin Xuanjing, Potassium Nitrate (Xiaoshi), Sulfur (Huang) each 2 liang, Sand 1 liang. All four substances are finely ground together, placed in a porcelain bottle, sealed tightly with mud, and heated with half a jin of charcoal heat around the bottle at a distance of one cun. After about half a day, when the medicine turns blue-purple, stop heating. After cooling, take it out, mix evenly with snow water collected in the twelfth lunar month until moist, place in a porcelain jar, and dry in the shade under the north side of the house behind the roof. Then bury it in the ground for twenty-seven days, take it out, grind finely, and bind with flour paste to make pills the size of a chestnut. First, take a hot bath, then swallow one pill with Artemisia soup. Cover with clothes; sweating indicates recovery.
Tangben Yu states: It is also produced in nearby areas, with red and greenish-white colors, but large flakes are not good. Shen Cunzhong stated: In saline lands, Yinjing Stone naturally grows.
Yanyi states: Taiyin Xuanjing Stone, when combined with other herbs, has special methods for applying to Da Feng Ji (severe skin diseases like leprosy). For Yin Syndrome Shanghan, presenting with cyanotic nails and complexion, deep, fine, and rapid pulse, epigastric fullness and hardness, dry thirst, continuous deficiency sweating, occasional delirium, cold limbs, throat discomfort, and abdominal pain, it must be assisted by other herbs. Tujing Bencao already records methods; only those from Jiezhou are of good quality.