（《别录》下品）
【释名】土乳（《唐本》）。
志曰∶此则土脂液也，生于土穴，状如殷 ，故名。
【集解】《别录》曰∶生高山崖上之阴，色白如脂，采无时。弘景曰∶此犹似钟乳、孔
公之类，故亦有 名，但在崖上尔，今不知用。恭曰∶此即土乳也。出渭州鄣县三交驿西
北坡平地土窟中，见有六十余坎，昔人采处。土人云∶服之亦同钟乳，而不发热。陶及本草
云，生崖上，非也。
时珍曰∶此即钟乳之生于山崖土中者，南方名山多有之。人亦掘为石山，货之充玩，不
知其为土钟乳也。
【气味】咸，平，无毒。
【主治】妇人阴蚀，大热，干痂（《别录》）。
（宋《嘉 》）
【释名】石饴饼（《别录》）、石芝（《纲目》）、化公石。
时珍曰∶其状如结脑，故名。昔有化公服此，又名化公石。
【集解】《别录》曰∶石脑生名山土石中，采无时。
弘景曰∶此石亦钟乳之类，形如曾青而白色黑斑，软易破。今茅山东及西平山并有之
，凿土龛取出。
恭曰∶出徐州宋里山，初在烂石中，入土一丈以下得之，大如鸡卵，或如枣许，触着即
散如面，黄白色。土人号为握雪 石，云服之长生。
保升曰∶苏恭引握雪 石为注，非矣。
时珍曰∶按《抱朴子·内篇》云∶石脑芝生滑石中，亦如石中黄子状，但不皆有耳。打
破大滑石千计，乃可得一枚。初破之，在石中五色光明而自得，服一升得长生。乃石芝也。
《别录》所谓石脑及诸仙服食，当是此物也。苏恭所说本是石脑，而又以注握雪 石，误矣
。握雪乃石上之液，与此不同。见后本条。
【气味】甘，温，无毒。
【主治】风寒虚损，腰脚疼痹，安五脏，益气（《别录》）。
【发明】弘景曰∶俗方不见用，《仙经》有刘君导仙散用之。又《真诰》云∶李整采服，
疗风痹虚损，而得长生。
恭曰∶隋时化公所服，亦名石脑。
时珍曰∶《真诰》载姜伯真在大横山服石脑，时时使人身热而不渴，即此。
（收录于《名医别录》下品）
【释名】土乳（出自《唐本草》）。
陶弘景说：这是土地的脂液，生长在土穴中，形状像殷（一种玉石），所以得名。
【集解】《名医别录》记载：生长在高高山崖的背阴处，颜色白如油脂，采集没有固定时间。陶弘景说：这仍然类似钟乳、孔公等物，所以也有别名，只是生长在崖上罢了，如今不知道使用。苏恭说：这就是土乳。产于渭州鄣县三交驿西北坡平地上的土窟中，看见有六十多个坑，是过去人采集的地方。当地人说：服用它也和钟乳一样，但不会引起发热。陶弘景及《新修本草》说，生长在崖上，是不对的。
李时珍说：这就是生长在山崖泥土中的钟乳，南方的名山多有这种。人们也挖掘它作为石山景观，售卖供人赏玩，却不知道它是土钟乳。
【气味】味咸，性平，无毒。
【主治】妇女外阴溃烂腐蚀，大热，干燥结痂（出自《名医别录》）。
（收录于宋代《嘉祐本草》）
【释名】石饴饼（出自《名医别录》）、石芝（出自《本草纲目》）、化公石。
李时珍说：它的形状像凝结的脑髓，所以得名。过去有位化公服用此物，所以又名化公石。
【集解】《名医别录》记载：石脑生长在名山的土石之中，采集没有固定时间。
陶弘景说：这种石头也是钟乳一类，形状像曾青但白色带有黑斑，质地软容易破碎。现在茅山东面和西平山都有出产，凿开土龛取出来。
苏恭说：产于徐州宋里山，起初在烂石中，深入土下一丈以下才能找到，大小像鸡蛋，或者像枣子那么大，一碰就散开像面粉一样，黄白色。当地人称为握雪石，说服用它可以长生不老。
苗保升说：苏恭引用握雪石来做注释，是不对的。
李时珍说：查考《抱朴子·内篇》记载：石脑芝生长在滑石中，也像石中黄子的形状，但不是到处都有。打破成千上万块大滑石，才能得到一枚。刚打破时，在石头内部五色光明而自然成形，服用一升可以长生。这就是石芝。《名医别录》所说的石脑以及各位仙人服食之物，应当就是这种东西。苏恭所说本是石脑，却又用来注释握雪石，这是错误的。握雪乃是石头上的液体，与此不同。见后面本条目的内容。
【气味】味甘，性温，无毒。
【主治】风寒引起的虚损，腰脚疼痛麻木，安定五脏，益气（出自《名医别录》）。
【发明】陶弘景说：世俗方剂中不见使用，《仙经》中有刘君的导仙散使用它。又《真诰》记载：李整采集服用，治疗风痹虚损，从而得以长生。
苏恭说：隋朝时化公所服用的，也叫石脑。
李时珍说：《真诰》记载姜伯真在大横山服用石脑，时常使人身体发热但不口渴，指的就是这个。
(Recorded in the Lower Category of *Bencao Jing Jizhu* / *Supplement to the Materia Medica*)
**[Names]** Earth Milk (*Tang Bencao*).
Ta Hongjing stated: This is the lipid fluid of the earth, growing in earthen caves, resembling Yin (a type of jade) in shape, hence the name.
**[Collected Explanations]** *Bencao Jing Jizhu* records: It grows on the shady sides of high mountain cliffs, white in color like fat or grease, with no specific time for harvesting. Ta Hongjing said: This is still similar to Stalactite (Zhongru) and Konggong [substances], thus it also has an alias, but it is merely found on cliffs; its use is unknown today. Su Gong said: This is indeed Earth Milk. It originates from earthen pits on the flat ground northwest of Sanjiao Post Station, Zhang County, Weizhou. There are over sixty pits visible, which were places where people harvested it in the past. Locals say: Taking it is similar to taking Stalactite, but it does not cause fever. Tao Hongjing and *Xinxiu Bencao* state that it grows on cliffs, which is incorrect.
Li Shizhen said: This is simply Stalactite growing within the soil of mountain cliffs, commonly found in famous mountains of the South. People also excavate it to create artificial rockeries for sale as ornamental items, unaware that it is Earth Stalactite.
**[Flavor and Properties]** Salty, Neutral, Non-toxic.
**[Indications]** Female genital ulceration and erosion, severe heat, dry scabs (*Bencao Jing Jizhu*).
(Recorded in Song Dynasty *Jiayou Bencao*)
**[Names]** Stone Malt Candy (*Bencao Jing Jizhu*), Stone Mushroom (*Bencao Gangmu*), Huagong Stone.
Li Shizhen said: Its shape resembles congealed brain matter, hence the name. In the past, a certain Master Hua consumed this substance, so it is also called Huagong Stone.
**[Collected Explanations]** *Bencao Jing Jizhu* records: Stone Brain grows in the stone and soil of famous mountains, with no specific time for harvesting.
Ta Hongjing said: This stone is also a type of Stalactite, shaped like Azurite but white with black spots, soft and easily broken. It is currently found in both the East and West Ping Mountains of Maoshan, extracted by chiseling out earthen niches.
Su Gong said: It originates from Songli Mountain in Xuzhou. Initially found in rotten stones, it is obtained at depths of more than one zhang below the soil. It is as large as a chicken egg or a date. Upon touch, it disperses like flour, yellowish-white. Locals call it "Snow-Holding Stone," claiming that consuming it grants longevity.
Miao Baosheng said: Su Gong's citation of Snow-Holding Stone as a note is incorrect.
Li Shizhen said: According to *Baopuzi · Inner Chapters*: Stone Brain Mushroom grows within Talcum Stone, resembling the form of Yellow Child within Stone, though not always present. One must break thousands of large Talcum Stones to obtain just one piece. When first broken, it shines with five colors inside the stone, naturally formed. Consuming one sheng can grant longevity. This is the Stone Mushroom. The "Stone Brain" mentioned in *Bencao Jing Jizhu* and various immortal dietary regimens likely refers to this substance. Su Gong described the original Stone Brain but erroneously used it to annotate Snow-Holding Stone. Snow-Holding Stone is actually liquid on the surface of rocks, which is different from this. See the entry below.
**[Flavor and Properties]** Sweet, Warm, Non-toxic.
**[Indications]** Deficiency damage caused by Wind-Cold, pain and numbness in the waist and legs, calming the Five Viscera, benefiting Qi (*Bencao Jing Jizhu*).
**[Innovative Insights]** Ta Hongjing said: It is not seen in common prescriptions, but is used in Liu Jun's Daoxian Powder from the *Immortal Classics*. Furthermore, *Zhen Gao* records: Li Zheng collected and consumed it, treating wind-bi deficiency damage, thereby achieving longevity.
Su Gong said: What Master Hua consumed during the Sui Dynasty was also named Stone Brain.
Li Shizhen said: *Zhen Gao* records that Jiang Bozhen consumed Stone Brain at Daheng Mountain, which frequently causes the body to feel hot without thirst; this refers to the aforementioned substance.