反酌而倾曰倒流。出 未放曰无根。随时初出曰新汲。将旦首汲曰井华。凡饮水疗疾。
皆取新汲清泉。不用停污浊暖。非直无效。亦且损人。（禹锡） 新汲井华水。取天一
真
麻知几水解云。昔尝过访灵台太史。见铜壶之漏水焉。太史召司水者。曰。此水已三周
环。水滑则漏迅。漏迅则刻瘥。当易新水。因悟曰。天下之水。用之灭火则同。濡槁则同。
至于性从地变。质与物迁。未尝同也。故蜀江濯锦则鲜。济源烹楮则 。南阳之潭渐于菊。
其人多寿。辽东之涧通于侵。其人多发。晋之山产矾。石。泉可愈疽。戎之麓伏硫黄。汤可
浴疠。扬子宜 。淮莱宜醪。沧卤能盐。阿井能胶。澡垢以污。茂田以苦。瘿消于藻带之波。
痰破于半夏之洳。冰水咽而霍乱息。流水饮而癃 通。雪水洗目而赤退。咸水濯肌而疮干。
菜之为齑。铁之为浆。曲之为酒。 之为醋。千派万种。言不可尽。至于井水一物。尚列数
名。况其他乎。昔有患小溲 者。众不能瘥。子和易以长川之急流煎前药。一饮立溲。此正
与灵枢治不瞑用千里流水煎半夏汤同意。后之用水者。当以子和之法为制矣。
亦曰土浆。掘黄土地作坎。深三尺。以新汲水沃入搅浊。少顷取清用之。（贞白）
气味甘寒。解中毒烦闷。并一切鱼肉果菜药物诸菌毒。治霍乱及中 猝死者。中暑霍乱。
乃暑热内伤。七神迷乱所致。阴气静则神藏。躁则消亡。地浆作于墙阴坎中。为阴中之阴。
能泻阳中之阳也。（濒湖）干霍乱病。不吐不利。胀痛欲死。服地浆三五盏即愈。大忌米汤。
中砒霜毒。地浆调铅粉。服之立解。
将水反着倒出并倾倒，称为“倒流水”。从源头刚刚流出、尚未流动的水，称为“无根水”。随着时间刚汲取出来的水，称为“新汲水”。天将亮时第一次汲取的井水，称为“井华水”。凡是用水来治疗疾病，都应当取用新汲取的清澈泉水，不使用停滞、污浊或温热的水。这不仅没有疗效，而且会损害人体。（禹锡）
新汲水和井华水，取自天地初开时的纯真之气。
金代医家麻知几在《水解》中记载：过去我曾拜访灵台太史（掌管天文历法的官员），看见铜壶滴漏。太史召来管水的人说：“这水已经循环了三个周期。水流滑利则漏水速度快，漏水速度快则计时误差大，应当更换新水。”我因此领悟到：天下的水，用来灭火作用相同，滋润干枯物体作用也相同。至于水的性质随地理环境变化，质地随盛装容器迁移，从未完全相同。所以蜀地的江水洗涤锦缎则鲜艳，济源的泉水煮纸则（此处原文缺字，推测为‘烂’或类似意），南阳的潭水浸润菊花，那里的人多长寿；辽东的山涧连通海水，那里的人多脱发；晋地的山出产矾石，泉水可以治愈痈疽；戎地的山脚潜伏硫黄，汤泉可以治疗麻风病；扬子江适宜酿酒，淮莱地区适宜造酒酿，咸卤之地能制盐，阿井能熬胶。洗澡用污水去垢，肥沃田地因苦涩而增产，瘿瘤消散于海带藻类的波浪中，痰饮破除于半夏浸出的汁液中。冰水咽下则霍乱停止，流动的水饮用则小便不通得以通畅。雪水洗眼则红赤消退，咸水沐浴肌肤则疮口干燥。蔬菜做成腌菜，铁器生成锈迹，酒曲变成美酒，粮食发酵成醋。千派万种，言语无法穷尽。至于井水这一类事物，尚且列出这么多名称，何况其他水源呢？
过去有患小便不通的病人，众人治疗无效。张子和改用长川急流煎煮前面的药方，喝一次立刻排尿。这正与《灵枢》治疗失眠使用千里流水煎煮半夏汤的道理一致。后世人用水治病，应当以张子和的方法为准则。
地浆也称为土浆。挖掘黄土挖成坑，深三尺，用新汲取的水倒入搅动使其浑浊，片刻后取上层清水使用。（贞白）
地浆气味甘寒。能解除中毒引起的烦闷，以及一切鱼肉、水果、蔬菜、药物和各种菌类毒素。治疗霍乱及突然因中暑死亡的情况。中暑和霍乱，是由于暑热内伤，导致七神迷乱所致。阴气宁静则神志藏守，躁动则神志消亡。地浆制作于墙根阴影下的坑中，属于阴中之阴，能够泻除阳中之阳。（濒湖）干霍乱病，表现为不吐不泻，腹胀疼痛欲死，服用三到五盏地浆即可痊愈。特别忌讳喝米汤。中砒霜毒，用地浆调和铅粉服用，立刻解毒。
Pouring water in reverse and dumping it out is called "reverse-flowing water" (Daoliu). Water that has just emerged from the source without flowing is called "rootless water" (Wugen). Water drawn immediately upon collection is called "freshly drawn water" (Xinji). Well water drawn for the first time at dawn is called "well-flower water" (Jinghua). Whenever water is used to treat diseases, one should always use freshly drawn clear spring water, and never use stagnant, turbid, or warm water. Not only is it ineffective, but it also harms the human body. (Yuxi)
Freshly drawn well water and well-flower water are taken from the pure energy of heaven and earth at their beginning.
Ma Zhiji of the Jin Dynasty recorded in *Shuijie* (Analysis of Water): "Once I visited the Grand Historian of Lingtai [an official in charge of astronomy and calendar] and saw the water dripping from a bronze clepsydra. The historian summoned the person in charge of water and said, 'This water has circulated three times. When water flows smoothly, the leakage is rapid; when leakage is rapid, the time measurement deviates. You must change to fresh water.' From this, I realized: All water in the world acts similarly in extinguishing fire and similarly in moistening withered things. However, its nature changes according to the land, and its quality shifts according to the vessel, so they are never identical. Thus, the rivers of Shu make brocade bright when washing it; the springs of Jiyuan [make paper] soft when cooking it; the ponds of Nanyang steep chrysanthemums, and its people live long lives; the streams of Liaodong connect to the sea, and its people suffer from hair loss; the mountains of Jin produce alum stones, and the spring water can cure carbuncles; the foothills of Rong harbor sulfur, and the hot springs can treat leprosy; the Yangtze River is suitable for brewing wine; Huai and Lai regions are suitable for making fermented rice wine; saline brine can produce salt; the A Well can produce gelatin. Bathing with dirty water removes grime; bitter soil enriches fields; goiters dissipate in the waves of kelp and algae; phlegm is broken by the juice of Pinellia ternata (Banxia); swallowing ice water stops cholera; drinking flowing water unblocks urinary retention; washing eyes with snow water reduces redness; bathing skin with salty water dries up sores. Vegetables become pickles; iron becomes rust; yeast turns into wine; grains ferment into vinegar. There are thousands of sources and varieties, which words cannot fully exhaust. As for well water alone, there are already so many names listed, let alone other water sources.
In the past, there was a patient suffering from difficulty in urination (Xiao Xiao), whom everyone failed to cure. Zhang Hezi changed the method by using the rapid current of a long river to decoct the previous prescription. After one drink, urination was immediately restored. This agrees with the principle in *Ling Shu* (Spiritual Pivot) regarding treating insomnia by using water from a thousand-mile flow to decoct Banxia Tang. Those who use water for treatment in later generations should adopt Zhang Hezi's method as the standard.
Earth slurry (Di Jiang) is also called soil slurry. Dig a pit in yellow earth, three chi deep, pour in freshly drawn water, stir until turbid, and after a short while, take the clear supernatant for use. (Zhenbai)
Its flavor is sweet and cold. It resolves toxicity-induced restlessness and fullness, as well as all toxins from fish, meat, fruits, vegetables, medicines, and various fungi. It treats cholera and sudden death due to heatstroke. Heatstroke and cholera are caused by internal injury from summer-heat, leading to confusion of the seven spirits. Yin qi being quiet allows the spirit to be stored; agitation causes the spirit to perish. Earth slurry is made in pits in the shade of walls, representing yin within yin, capable of draining yang within yang. (Binhu)
For Gan Huoluan (Dry Cholera), characterized by neither vomiting nor diarrhea, abdominal distension and pain causing a desire to die, taking three to five cups of earth slurry leads to recovery. Rice soup is strictly contraindicated. For arsenic poisoning, mixing earth slurry with lead powder and ingesting it provides immediate relief.