黄土，（三尺以上曰粪，三尺以下曰土，凡用当去上恶物，勿令入客水。）土为万物
之母，黄乃中央正色，在人脏腑则脾胃应之，故万物非土不生，人身五脏六腑非脾胃无以养，是
以黄土入药，治泻痢冷热赤白，腹中热毒，绞结痛者，取其补助戊己之功也。味甘而气和，故
能安和脾胃止下血，即解诸药毒，诸内毒，合口椒毒，野菌毒，盖诸毒遇土即化也。东
壁尘土，百余年者即佳，得太阳真火之气，故气温味甘，土性可以扶脾，藉火更可生
土，故为扶脾益胃虚寒滑泄，下部湿疮，中暑霍乱，脱肛暑疟，除湿敛疮，并堪资治，
和白术炒专止注泻，同蚬壳研，能敷痘疮，点翳浸目中摩癣发身上，治春月寒热温疟，
去下部痔漏脱肛，故鞋底土，取自己穿者良，研水吞适他方不服水土立效。铸钟黄
土，研酒服，卒心痛，疰忤恶气殊功。鼠壤土，主中风中毒挛痛，曰曝干用。车辇土，
治小初生，无肤赤色，因受胎，未得土气，取碾服之，三日后肤生良验。胡燕窝土，胡
燕即玄乌，春分后至窠，取四方湿土为之，故气味甘寒，凡诸痛痒疮疡，皆属心火。而
甘寒最解火毒，且土性又能化一切毒也，治风瘙痒疹 痒，水调湿敷，入回燕膏，贴瘰
最效。回燕者，朝北燕窝土也。
井底砂，砂即泥也。禀地中至阴之气，味甘而大寒者也，故《本经》主汤火烧疮
用，又能疗妊娠热病，取敷心下脐及丹田，可护胎无失。蚯蚓泥，味甘气寒无毒，主赤
白久热下痢，用一升炒烟至尽，沃汁半升，滤净饮之即愈，以其甘寒之气，则肠胃湿热
自除矣。外涂小儿阴囊肿痛，及传热毒疮肿蛇犬咬伤，皆取土有化毒之功，蚓有味咸软
坚、消瘀散结之力，韭地土者更佳，亦此义耳。
粪坑底泥，大寒无毒，以纯阴大寒之性，故专治大热，留结之疮，凡发背诸恶疮
阴干为末，新水调敷，其痛立止。诸恶疔肿，同蝉蜕全蝎等分，捣作钱大，香油煎滚
温服，以滓敷疮四周，疔自出也。烟胶即熏 牛皮灶上黑土，味辛苦气微温，辛能散
风，苦能燥湿，杀虫，故主头疮白秃疥疮风癣，痒痛流水也。取 牛皮灶岸烟膏为末，
麻油调涂，或入轻粉少许最佳。
黄土，（三尺以上称为粪，三尺以下称为土，凡是使用的时候应当去除上层的污秽之物，不要让它们混入药用水中。）土是万物的母亲，黄色是中央的正色，在人的脏腑中对应脾胃，所以万物没有土就不能生长，人身体的五脏六腑没有脾胃就无法得到滋养，因此黄土入药，治疗泄泻痢疾、冷热赤白痢、腹中的热毒以及绞痛结滞疼痛，是取它补助戊己（脾胃）的功效。它的味道甘甜而气性平和，所以能够安和脾胃并停止下血，也能解除各种药物的毒性、体内的毒素、口椒的毒性以及野菌的毒性，大概是因为各种毒素遇到土就会化解。东壁上的尘土，如果是百余年以上的就更好，因为它得到了太阳真火之气，所以气性温和、味道甘甜，土的属性可以扶持脾脏，借助火性更可以生土，所以它是治疗脾虚胃寒导致的滑泄、下部湿疮、中暑霍乱、脱肛暑疟的有效药物，具有除湿收敛疮口的作用，都可以资助治疗。与白术同炒，专门止住注泻；与蚬壳一起研磨，能敷贴痘疮；点入眼中或浸水后摩擦皮肤治疗癣疾，治疗春季的寒热温疟，去除下部的痔漏和脱肛。鞋底土，取自己穿过的比较好，研成粉末用水吞服，对于不服水土的情况立刻见效。铸钟用的黄土，研磨后用酒送服，对突然的心痛、疰忤恶气有显著功效。鼠壤土，主治中风中毒引起的痉挛疼痛，说是要晒干后使用。车辇土，治疗新生儿无皮肤且呈红色，这是因为受胎时未得到土气，取来碾碎服用，三天后皮肤生出，疗效确切。胡燕窝土，胡燕即玄乌（燕子），春分后筑巢，用四方的湿土建造，所以气味甘寒，凡是各种痛痒疮疡，都属于心火。而甘寒最能解火毒，而且土性又能化解一切毒素，治疗风瘙痒疹痒，用水调湿敷，加入回燕膏，贴在瘰疬上最有效果。回燕，是指朝北的燕窝土。
井底砂，砂就是泥。禀受了地中至阴的气，味道甘甜且大寒，所以《本经》记载主治汤火烧伤，又能治疗妊娠期间的热病，取来敷在心下、脐部及丹田，可以保护胎儿不致流产。蚯蚓泥，味道甘甜、气性寒、无毒，主治赤白久热下痢，用一升炒至烟尽，加半升水，过滤干净后饮用即可痊愈，因为它的甘寒之气，能使肠胃湿热自然消除。外涂小儿阴囊肿痛，以及传热毒疮肿、蛇犬咬伤，都是取土有化解毒素的功效，蚯蚓味咸能软坚、消瘀散结，韭地的土更好，也是这个道理。
粪坑底泥，大寒无毒，因为具有纯阴大寒的性质，所以专门治疗大热留结的疮，凡是发背等恶疮，阴干后研为末，用新水调敷，疼痛立刻停止。各种恶疔肿，与蝉蜕、全蝎等量，捣成如铜钱大小，用香油煎滚温服，以药渣敷在疮四周，疔毒自然会出来。烟胶即熏牛皮灶上的黑土，味道辛苦、气微温，辛能散风，苦能燥湿杀虫，所以主治头疮、白秃、疥疮、风癣引起的痒痛流水。取熏牛皮灶岸的烟膏研为末，用麻油调涂，或者加入少许轻粉最佳。
Yellow earth, (that which is above three chi is called feces, and that below three chi is called earth; when used, the upper foul matter should be removed to prevent it from entering the medicinal water.) Earth is the mother of all things. Yellow is the correct color of the center. In the human viscera, it corresponds to the Spleen and Stomach. Therefore, all things cannot grow without earth, and the five zang and six fu organs of the human body cannot be nourished without the Spleen and Stomach. Thus, yellow earth is used in medicine to treat diarrhea and dysentery, cold-heat red-and-white dysentery, heat toxins in the abdomen, and cramping pain with knotting, taking advantage of its ability to assist Wu-Ji (the Earth element/Spleen-Stomach). Its taste is sweet and its nature is harmonious, so it can soothe and harmonize the Spleen and Stomach, stop lower bleeding, and even resolve the toxicity of various drugs, internal toxins, pepper-induced toxicity, and wild mushroom toxicity. This is because various toxins are transformed upon encountering earth. Dust from the east-facing wall that has accumulated for over a hundred years is considered excellent, as it possesses the true fire energy of the Sun. Therefore, its nature is warm and its taste is sweet. The property of earth can support the Spleen, and relying on fire further generates earth. Hence, it is used to support the Spleen and benefit the Stomach for deficiency-cold with slippery discharge, damp sores in the lower part, summerheat cholera, rectal prolapse due to summerheat and malaria. It removes dampness and astringes sores, and is suitable for treatment. When stir-fried with Atractylodis Macrocephalae Rhizoma (Baizhu), it specifically stops persistent diarrhea. When ground together with Corbiculae Concha (Xianqiao), it can be applied to smallpox lesions. Applied to the eyes or rubbed on the skin after soaking, it treats tinea. It treats springtime cold-heat and warm malaria, and removes hemorrhoids, fistulas, and rectal prolapse in the lower part. Soil from shoe soles, preferably from one's own worn shoes, is best. Ground and swallowed with water, it produces immediate effects for those unaccustomed to local conditions. Yellow earth used for casting bells, ground and taken with wine, shows remarkable efficacy for sudden heart pain and malignant qi invasion. Mouse mound soil mainly treats spasmodic pain caused by wind-stroke and poisoning; it is said to be used after sun-drying. Soil from chariot wheels treats newborns who lack skin and have a red complexion, due to not having received the qi of earth during conception. Taken ground, it yields good results with skin growth after three days. Hu Yanwo earth: "Hu Yan" refers to the black swallow. After the Spring Equinox, they build nests using wet earth from four directions, hence its taste and nature are sweet and cold. All kinds of painful, itching sores and ulcers belong to Heart fire. Sweet and cold substances best resolve fire toxins, and the nature of earth can transform all toxins. It treats wind-induced itching and rashes; mixed with water for wet application, or added to Huiyan paste and applied to scrofula, it is most effective. Huiyan refers to the north-facing swallow nest soil.
Well bottom sand: Sand is mud. It inherits the extreme yin qi of the earth. Its taste is sweet and its nature is greatly cold. Therefore, the *Shennong Bencao Jing* states it treats burns from boiling water and fire. It can also treat febrile diseases during pregnancy. Applied to the area below the heart, the umbilicus, and Dantian, it protects the fetus from miscarriage. Earthworm soil: Its taste is sweet, nature is cold, and it is non-toxic. It mainly treats chronic red-and-white dysentery with long-standing heat. One sheng is stir-fried until smoke ceases, half a sheng of water is added, filtered, and drunk, leading to immediate recovery. Its sweet and cold nature eliminates damp-heat in the intestines and stomach. Applied externally to swollen and painful scrotums in children, as well as spreading toxic sores and snake or dog bites, it utilizes the toxin-resolving power of earth. Earthworms have a salty taste that softens hardness, resolves stasis, and dissipates nodules. Soil from leek fields is even better, for the same reason.
M cesspit bottom mud: It is greatly cold and non-toxic. Due to its pure yin and greatly cold nature, it specifically treats severe heat with lingering accumulation in sores. For any severe sores like back carbuncles, dry them in the shade, grind into powder, mix with fresh water, and apply. Pain stops immediately. For various malignant carbuncles and swellings, mix equally with Cicada Slough (Chantui) and Scorpion (Quanxie), pound into cakes the size of a coin, fry in sesame oil until boiling, take warm, and apply the dregs around the sore. The carbuncle will naturally emerge. Smoke glue: This is the black earth from the stove where ox hides are smoked. Its taste is pungent and bitter, and its nature is slightly warm. Pungency disperses wind, bitterness dries dampness, and it kills parasites. Thus, it treats head sores, white ringworm, scabies, and wind tinea with itching, pain, and weeping. Take the smoke paste from the ox-hide smoking stove bank, grind into powder, mix with sesame oil for application, or add a small amount of Calomel (Qingfen) for best results.