无毒。主喉痹及喉中热塞。烧令赤投酒中，及热饮之。（今附）
图经文具铁条下。
圣惠方∶治妊娠咳嗽。以车 一枚，烧令赤，投酒中，候冷冻饮料之。外台秘要，治小儿大
便失血。车 一枚，烧令赤，纳水中，服之。
\r南恩洲石蛇\pd45.bmp\r
图经曰∶石蛇，出南海水旁山石间，其形盘屈如蛇也，无首尾，内空，红紫色，又似车
螺，
不
知何物所化？大抵与石蟹同类，功用亦相近。尤能解金石毒，以左盘者良。采无时。味咸，
性平，无毒。
衍义曰∶石蛇，《本经》不收，始自《开宝本草》添附。其色如古墙上土，盘结如楂梨
大，
中空，两头巨细一等，无盖，不与石蟹同类。蟹则真蟹也，蛇非真蛇也。今人用之绝少。
\r兖州黑羊石\pd46.bmp\r
图经曰∶黑羊石，生兖州宫山之西。味淡，性热，解药毒。春中掘地采之，以黑色有墙
壁光莹者为上。
图经曰∶白羊石，生兖州白羊山。味淡，其性∶熟用即大热，生用即凉。解众药毒。春
中掘
一种唐本余
味辛，大寒，主热风，心虚惊痫，恍惚，狂走，膈上热，头面热风冲心上下，安神定
，镇心明目，利水道，治人心风、健忘。其法以白锡和银箔及水银合成之。亦堪补牙齿缺落
，又当凝硬如银，合炼有法。
四十种陈藏器余
Non-toxic. Mainly treats throat obstruction (throat swelling and blockage) and a sensation of heat blockage in the throat. Burn it until red-hot, throw it into wine, and drink it while hot. (Modern addition)
The details in *Tujing Bencao* are recorded under the entry for "Iron Strip".
*Shenghui Fang*: Treats cough during pregnancy. Take one chariot axle hub, burn it until red-hot, put it into wine, wait for it to cool and freeze, then drink it. *Waitai Miyao*: Treats hematochezia (blood in stool) in children. Take one chariot axle hub, burn it until red-hot, place it in water, and consume the water.
Nan'en Prefecture Stone Snake \pd45.bmp\
*Tujing Bencao* states: Stone snake is found among rocks near the sea in Nan'en Prefecture. Its shape coils like a snake, without head or tail, hollow inside, reddish-purple in color, resembling a chariot snail shell. It is unknown what substance transforms into it. Generally, it is similar to stone crab, and its functions are also similar. It is particularly effective in resolving mineral toxicity; those coiled to the left are superior. It can be collected at any time. Salty in taste, neutral in nature, non-toxic.
*Yanyi* states: Stone snake was not included in *Benjing*, but was added starting from *Kaibao Bencao*. Its color resembles earth on ancient walls, coiled like a jujube or pear in size, hollow in the middle, with both ends of equal thickness, without a lid, and is not of the same category as stone crab. The crab is a true crab, while the snake is not a true snake. It is rarely used by people nowadays.
Yanzhou Black Sheep Stone \pd46.bmp\
*Tujing Bencao* states: Black sheep stone grows west of Gongshan in Yanzhou. Bland in taste, hot in nature, resolves drug toxicity. Dug from the ground in spring; those that are black and lustrous like glazed walls are considered the best grade.
*Tujing Bencao* states: White sheep stone grows on Baiyang Mountain in Yanzhou. Bland in taste. Its nature: when processed (cooked), it is extremely hot; when raw, it is cool. Resolves various drug toxicities. Dug from the ground in spring.
A supplement from *Tangben*
Pungent in taste, extremely cold in nature. Mainly treats wind-heat, heart deficiency with palpitations and epilepsy, mental confusion, manic running, upper diaphragm heat, wind-heat from head and face rushing up and down affecting the heart, calms the spirit, stabilizes the mind, clears the eyes, promotes urination, treats heart wind, and forgetfulness. The method involves combining white tin, silver foil, and mercury. It can also be used to fill missing teeth, should be hard and solid like silver, and requires specific refining methods.
Forty supplements from Chen Zangqi