味苦寒。主百病，除寒热邪气，逐六腑积聚，结固留癖，能化七十二种石。炼饵服之，
轻身神仙。生山谷。
《吴普》曰∶朴硝石，神农、岐伯、雷公∶无毒，生益州，或山阴。入土，千岁不变。
炼之不成，不可服（《御览》）。
《名医》曰∶一名硝石朴，生益州，有盐水之阳，采无时。
案∶《说文》云∶朴，木皮也，此盖硝石外裹如玉璞耳。旧作硝，俗字。
味甘，寒。主身热泄 ，女子乳难，癃闭。利小便，荡胃中积聚寒热，益精气。久服，
轻身、耐饥、长年。生山谷。
《名医》曰∶一名液石，一名共石，一名脱石，一名番石，生赭阳，及太山之阴，或掖
北，白山山，或卷山。采无时。
案∶《范子计然》云∶滑石，白滑者，善。《南越志》云∶ 城县出 石，即滑石也。
味酸，寒。主明目，目痛；金创，诸痫痉；女子阴蚀痛，石淋寒热，崩中下血，
诸邪毒瓦斯，令人有子。炼饵服之，不老，久服，增寿神仙。能化铁为铜，成金银（《御览
》引作合成）。一名毕石，生山谷。
《吴普》曰∶石胆，神农∶酸，小寒；李氏∶小寒；桐君∶辛，有毒；扁鹊∶苦，无毒
（《御览》引云∶一名黑石，一名铜勒，生羌道或名青山，二月瘐子、辛丑采）。
《名医》曰∶一名黑石，一名棋石，一名铜勒，生羌道、羌里、句青山。二月瘐子、辛
丑日采。
案∶《范子计然》云∶石胆，出陇西羌道。陶弘景云∶《仙经》一名立制石，《周礼》疡
医∶凡疗疡，以五毒攻之；郑云∶今医方有五毒之药，作之合黄 ，置石胆、丹沙、雄黄
、矾石、磁石其中，烧之三日三夜，其烟上着，以鸡羽扫取之以注创，恶肉破骨则尽出，《
图经》曰∶故翰林学士杨亿尝笔记直史馆杨 ，有疡生于颊，人语之，依郑法合烧，药成。
注之疮中，遂愈。信古方攻病之速也。
[Piao Xiao]
Bitter in taste, cold in nature. It treats a hundred diseases, eliminates pathogenic factors of cold and heat, expels accumulations from the six fu organs, dissolves solid masses and long-standing fixed stasis, and can melt seventy-two kinds of minerals. When refined and taken as food, it makes the body light and leads to immortality. Grows in mountain valleys.
Wu Pu records: Piao Xiao Shi (Plaster Niter), Shennong, Qibo, and Leigong consider it non-toxic. It is produced in Yizhou, or on the shady side of mountains. Buried in the soil for a thousand years, it does not change. If refinement fails, it should not be consumed (cited from *Taiping Yulan*).
*Mingyi Bielu* records: Also known as Xiaoshi Pu (Niter Plaster), produced in Yizhou, on the sunny side with saline water, collectible at any time.
Note: *Shuowen Jiezi* states: "Pu" means tree bark; here it likely refers to niter wrapped externally like an unpolished jade stone. The old form "Xiao" is a common variant character.
[Hua Shi]
Sweet in taste, cold in nature. It treats fever, diarrhea, difficulty in lactation in women, strangury and urinary retention. It promotes urination, sweeps away accumulated cold and heat in the stomach, and benefits essence and qi. Long-term consumption makes the body light, enables resistance to hunger, and prolongs life. Grows in mountain valleys.
*Mingyi Bielu* records: Also known as Yeshi (Liquid Stone), Gongshi, Tuoshi, or Fanshi. Produced in Zheyang, on the north slope of Mount Tai, or north of Ye County, Baishan Mountain, or Juanshan. Collectible at any time.
Note: *Fanzi Jiran* states: Among Hua Shi (Talcum), white and smooth ones are superior. *Nanyue Zhi* states: The stone produced in Cheng County is Hua Shi.
[Shi Dan]
Sour in taste, cold in nature. It improves vision and treats eye pain; metal wounds; various epilepsy and spasms; painful erosion of the female genitals; shilin (lithuria) with cold and heat sensations; metrorrhagia and bleeding; various pathogenic toxic vapors, and helps conception. When refined and taken as food, it prevents aging. Long-term consumption increases longevity and leads to immortality. It can transform iron into copper and synthesize gold and silver (*Taiping Yulan* cites "synthesize"). Also known as Bishi, grows in mountain valleys.
Wu Pu records: Shi Dan (Stone Gall). Shennong considers it sour and slightly cold; Li considers it slightly cold; Tongjun considers it pungent and toxic; Bianque considers it bitter and non-toxic (*Taiping Yulan* adds: also known as Heishi or Tongle, produced in Qiandao or Qingshan, collected on Yuzi days and Xinchou days in the second lunar month).
*Mingyi Bielu* records: Also known as Heishi, Qishi, or Tongle. Produced in Qiandao, Qiangli, and Juqingshan. Collected on Yuzi days and Xinchou days in the second lunar month.
Note: *Fanzi Jiran* states: Shi Dan is produced in Qiandao, Longxi. Tao Hongjing states: In *Xianjing*, it is called Lizhishi. *Zhou Li - Yangyi* records: For treating sores, use the five-poison method to attack them; Zheng Xuan annotates: Current medical formulas contain five-poison medicine, prepared by combining yellow hen, Shi Dan (Chalcanthite), Dansha (Cinnabar), Xionghuang (Realgar), Fanshi (Alum), and Cishi (Magnetite), firing for three days and nights. The smoke rises and deposits on objects; sweep it off with a chicken feather and apply to the wound, so that foul flesh and broken bone will all be expelled. *Tujing* states: Former Hanlin Academician Yang Yi once recorded that Yang, a Direct Historiographer, had a sore on his cheek. Someone told him to follow Zheng's method to prepare and fire the medicine. After application to the sore, he recovered. This indeed confirms the rapid efficacy of ancient formulas in attacking disease.