（《本经》中品）
【释名】孔公石（《纲目》）、通石。
时珍曰∶孔窍空通，附垂于石，如木之芽 ，故曰孔空 ，而俗讹为孔公尔。
恭曰∶此 次于钟乳，状如牛羊角，中有孔通，故名通石。《别录》误以此为殷 之根
，而俗犹呼为孔公 是也。
【集解】《别录》曰∶孔公 ，殷 根也。青黄色，生梁山山谷。
弘景曰∶梁山属冯翊郡，此即今钟乳床也，亦出始兴，皆大块，打破之。凡钟乳之类有
三种，同一体。从石室上汁溜积久盘结者，为钟乳床，即孔公 也。
其以次小 者，为殷 ，大如牛羊角，长一、二尺，今人呼此为孔公 也。殷 复溜，
轻好者为钟乳。虽同一类，而疗体各异，贵贱悬殊。三种同根，而所生各处，当是随其土地
为胜尔。
保升曰∶钟乳之类凡五种∶钟乳、殷 、孔公 、石床、石花也。虽同一体，而主疗各
异。
颂曰∶孔公 、殷 既是钟乳同生，则有 处皆当有乳，今不闻有之。岂用之既寡，则
采者亦稀乎？抑时人不知 中有乳，不尽采乎？不能尽究也。
恭曰∶孔公 次于钟乳，《别录》误以为殷 之根。殷 即孔公 之根，俗人乃以孔公
为殷 ，陶氏依之，以孔公 为钟乳床，非矣。
时珍曰∶以姜石、通石二石推之，则似附石生而粗者，为殷 ；接殷 而生，以渐空通
者，为孔公 ；接孔公 而生者，为钟乳。当从苏恭之说为优。盖殷 如人之乳根，孔公
如乳房，钟乳如乳头也。
【气味】辛，温，无毒。普曰∶神农∶辛；岐伯∶咸；扁鹊∶酸，无毒。
大明曰∶甘，暖。
权曰∶甘，有小毒。
之才曰∶木兰为之使，恶细辛、术，忌羊血。
【主治】伤食不化，邪结气恶，疮疽 痔，利九窍，下乳汁（《本经》）。
男子阴疮，女子阴蚀，及伤食病，常欲眠睡（《别录》）。
主腰冷膝痹毒瓦斯，能使喉声圆亮（甄权）。轻身充肌（青霞子）。
【发明】弘景曰∶二 不堪丸散，只可水煮汤，并酒浸饮之，甚疗脚弱香港脚。
【附方】新一。
风气脚弱∶孔公 二斤，石斛五两，酒二斗，浸服。（《肘后方》）
（收录于《神农本草经》中品）
【释名】孔公石（出自《本草纲目》）、通石。
李时珍说：因其窍穴空通，附着并垂悬在石头上，像树木的嫩芽一样，所以称为“孔空”，而民间讹传为“孔公”。
苏恭说：这种石头排在钟乳之后，形状像牛羊的角，中间有孔洞相通，所以名叫通石。《名医别录》错误地把它当作殷孽的根，但民间仍然称呼它为孔公石，这是正确的。
【集解】《名医别录》说：孔公石，是殷孽的根。颜色青黄，生长在梁山山谷中。
陶弘景说：梁山属于冯翊郡，这就是现在的钟乳床，也出产于始兴，都是大块头，需要打破使用。凡是钟乳这类矿物有三种，本质上是同一体质。从石室上方滴落的汁液经过长久积聚盘结而成的，叫做钟乳床，也就是孔公石。其中次一等较小的，叫做殷孽，大小像牛羊的角，长度一、二尺，现在人称呼这个为孔公石。殷孽再次滴落形成的，质地轻细优良的叫做钟乳。虽然属于同一类，但治疗功效各异，价格贵贱悬殊。这三种同根同源，但生长地点不同，应当是根据各地土地条件而定其优劣。
郑保升说：钟乳这类矿物共有五种：钟乳、殷孽、孔公石、石床、石花。虽然同一体质，但主治功效各不相同。
苏颂说：孔公石和殷孽既然与钟乳同生一处，那么有石的地方都应该有钟乳，如今却听不到有这样的说法。难道是使用的既少，采集的人也稀少吗？还是当时的人不知道石中有钟乳，没有全部采集呢？无法彻底探究清楚。
苏恭说：孔公石排在钟乳之后，《名医别录》错误地把它当作殷孽的根。实际上殷孽就是孔公石的根，俗人却把孔公石当作殷孽，陶弘景依据这一错误观点，将孔公石视为钟乳床，这是不对的。
李时珍说：根据姜石、通石这两种石头来推断，似乎是附着石头生长且较粗大的，是殷孽；连接殷孽而生，逐渐变得空通的，是孔公石；连接孔公石而生成的，是钟乳。应当以苏恭的说法为优。大概殷孽就像人的乳根，孔公石就像乳房，钟乳就像乳头。
【气味】辛味，温性，无毒。普曰引用神农的话说是辛味；岐伯说是咸味；扁鹊说是酸味，无毒。
孟诜说：甘味，性质暖。
李权说：甘味，有小毒。
徐之才说：木兰作为它的引经药，忌与细辛、白术同用，禁忌食用羊血。
【主治】饮食停滞不消化，邪气结聚导致的恶疾，疮疽痔疮，通利九窍，下乳汁（出自《神农本草经》）。
男子阴部疮疡，女子阴户腐蚀，以及伤食病，经常想睡觉（出自《名医别录》）。
主治腰部寒冷、膝盖痹痛及毒瓦斯之气，能使声音圆润响亮（甄权）。轻身健体，充实肌肉（青霞子）。
【发明】陶弘景说：这两种石头不适合制作丸剂或散剂，只能用水煮成汤剂，或者用酒浸泡后饮用，对治疗脚弱和香港脚（足癣/脚气病）非常有效。
【附方】新增一方。
风气引起的脚弱无力：孔公石二斤，石斛五两，酒二斗，浸泡后服用。（出自《肘后备急方》）
(Recorded in the Middle Category of *Shennong Bencao Jing*)
[Names] Konggongshi (from *Bencao Gangmu*), Tongshi.
Li Shizhen stated: Because it has hollow pores and hangs attached to the rock like a tree bud, it is called "Kongkong" (Hollow), which was later colloquially mispronounced as "Konggong".
Su Gong stated: This stone ranks below Zhongru (Stalactite). Its shape resembles the horns of cattle or sheep, with a hole passing through the center, hence named Tongshi (Passing Stone). *Bielu* mistakenly identified it as the root of Yenie, but the common people still call it Konggongshi, which is correct.
[Collection and Explanation] *Bielu* states: Konggongshi is the root of Yenie. It is greenish-yellow in color and grows in the valleys of Liangshan.
Tao Hongjing stated: Liangshan belongs to Fengyi Commandery. This is what is now known as Zhongchuang (Stalactite Bed). It is also produced in Shixing. These are large chunks that must be broken open. There are three types of minerals in the Zhongru category that share the same substance. The fluid dripping from the top of stone chambers accumulates over time to form knots; this is called Zhongchuang, which is Konggongshi. The smaller ones of the next grade are called Yenie, resembling cattle or sheep horns in size, one to two chi long. People currently refer to this as Konggongshi. The fluid dripping from Yenie, if light and fine, is called Zhongru (Stalactite). Although they belong to the same category, their therapeutic properties differ significantly, as do their prices. These three share the same root but grow in different places; their quality depends on the local terrain.
Zheng Baosheng stated: There are five types of minerals in the Zhongru category: Zhongru, Yenie, Konggongshi, Shichuang (Stone Bed), and Shihua (Stone Flower). Although they share the same substance, their primary treatments vary.
Su Song stated: Since Konggongshi and Yenie grow together with Zhongru, wherever there are rocks, there should be Zhongru. Yet, we do not hear of such occurrences today. Is it because usage is scarce, leading to fewer collectors? Or do contemporary people not know that Zhongru exists within the stones and fail to collect them all? It is impossible to investigate thoroughly.
Su Gong stated: Konggongshi ranks below Zhongru. *Bielu* mistakenly regarded it as the root of Yenie. In fact, Yenie is the root of Konggongshi. Laypeople mistake Konggongshi for Yenie. Tao Hongjing followed this error, identifying Konggongshi as Zhongchuang, which is incorrect.
Li Shizhen stated: Inferring from Jiangshi and Tongshi, it appears that the coarse forms growing attached to the rock are Yenie; those growing from Yenie and gradually becoming hollow are Konggongshi; and those growing from Konggongshi are Zhongru. Su Gong's explanation is superior. Essentially, Yenie is like the breast root of a human, Konggongshi is like the breast, and Zhongru is like the nipple.
[Flavor and Properties] Acrid, Warm, Non-toxic. Pu cited Shennong saying it is Acrid; Qibo said it is Salty; Bianque said it is Sour and Non-toxic.
Meng Shen stated: Sweet, Warm-natured.
Li Quan stated: Sweet, Slightly toxic.
Xu Zhicai stated: Magnolia bark (Mulan) serves as its guiding herb. It is incompatible with Xixin (Asarum) and Baizhu (Atractylodes macrocephala). Avoid consuming sheep blood.
[Indications] Indigestion due to food stagnation, evil qi accumulation causing malignant conditions, sores, carbuncles, hemorrhoids. Opens the nine orifices. Promotes lactation (*Shennong Bencao Jing*).
Penile ulcers in men, vaginal erosion in women, and food stagnation disease characterized by excessive drowsiness (*Bielu*).
Treats coldness in the waist and bi-syndrome (painful obstruction) in the knees caused by toxic vapors. Makes the voice clear and resonant (Zhen Quan). Lightens the body and fills out the muscles (Qingxiazi).
[Elucidation] Tao Hongjing stated: These two stones are unsuitable for making pills or powders. They can only be boiled in water to make decoctions or soaked in wine for drinking. They are very effective for treating leg weakness and Hongxiangjiao (Hong Kong foot / Tinea pedis).
[Attached Prescriptions] One new prescription.
Wind-dampness causing leg weakness: Konggongshi 2 jin, Shihu (Dendrobium) 5 liang, Wine 2 dou. Soak and consume (*Zhouhou Beiji Fang*).