（四法）
制西瓜硝
觅上号头藤西瓜，或一个，或二个，用稻柴垫好，
放在干燥厨内。至立冬日，将瓜盖 去，腹中瓤取去
七分，皮上肉剩三分，用皮硝二斤或斤半，看瓜之大
小，盖好，用线络之，悬向背阴屋檐下，至冷冻之期，
其硝自飞出瓜皮外，颜色如霜。用刷帚轻轻拂下，以
盘盛之，包好，至三、五日一取。至春间将瓜内所剩
之硝安好，候到立冬，将新鲜瓜盛之，再加半斤或一
斤，仍旧悬好，皮外飞出取之，如此二次，中间之硝
亦好，不必再做。可治喉癣，喉疳诸火症。溃烂者吹
之不痛。外皮飞出者名银粉雪，其功可并紫雪。
制人中黄
将大毛竹筒一个，两头留节，凿一圆眼，用大粉
草不拘多少，为末细填满为度，用生漆将眼针好。刮
去竹皮，通身钻满细眼。抛入大坑中，十年止好，六、
七年亦可用得，能治结毒、咽喉烂、牙疳、伤寒发斑，
俱称圣药。
制篇柏汁
用柏叶嫩头摘在井水内，浸一次，即带水捞入石
臼中打烂，若干，冲白矾水少许，出汁收在瓷器中。
用时再冲白矾汤，连漱喉间。能治一切火症郁热、烂
喉、烂疳。其性凉血润燥、清肝胃之火。况得松柏之
气，医方珍之，不可轻忽。
制胆矾
用鲭鱼胆，不拘几个和白矾拌之，入猪尿胞内，
挂在背阴之所。明年再入胆汁，仍旧风干。如此三次，
遇急症泡汤灌吐。
（四种制药方法）
制作西瓜硝
挑选上好的头茬藤生西瓜，一个或两个均可，用稻草垫好，放置在干燥的厨房内。等到立冬这一天，去掉瓜盖，挖去瓜瓤七分，保留瓜皮上的果肉三分。根据西瓜的大小，放入二斤或一斤半的皮硝（芒硝），盖好瓜盖，用绳子捆扎牢固，悬挂在背阴的屋檐下。到了严寒冰冻时期，硝分会自然从瓜皮中析出到外部，颜色像霜一样。用刷子轻轻刷下，盛放在盘子里，包好保存，每隔三到五天取用一次。到了春天，将瓜内剩余的硝分装好，等到下一个立冬，用新鲜的西瓜重新装入，再加半斤或一斤硝，依旧悬挂好，待其从皮外析出后收取。如此重复两次，中间阶段的硝也是好的，不必再制作。此药可治疗喉癣、喉疳等各种火症。对于溃烂部位，吹药后不会感到疼痛。从外皮析出的部分称为“银粉雪”，其功效可与紫雪媲美。
制作人中黄
取一节大毛竹筒，两头保留竹节，在一端凿一个圆孔。使用大量甘草（大粉草），研磨成细末，填满竹筒为止，然后用生漆将孔封固。刮去竹皮，在竹筒周身钻满细密的小孔。将其投入大坑中，埋藏十年才完全制成，六至七年也可以使用。能治疗结毒、咽喉腐烂、牙疳、伤寒发斑等症，均被称为圣药。
制作侧柏叶汁
采摘嫩侧柏叶尖，放入井水中浸泡一次，随即带着水捞出，放入石臼中捣烂。取适量捣碎的柏叶，加入少许白矾水，榨取汁液，收集在瓷器中。使用时，再加入白矾汤，用来漱口清洁咽喉。能治疗各种火症郁热、烂喉、烂疳。其性质凉血润燥，清泻肝胃之火。况且它兼具松柏之气，医方十分珍视，不可轻视。
制作胆矾
使用鲭鱼胆汁，数量不限，与白矾混合拌匀，装入猪尿胞内，悬挂在背阴处。第二年再注入胆汁，依旧风干。如此重复三次，遇到急症时，泡汤灌服以催吐。
(Four Methods of Preparation)
Preparation of Watermelon Nitre (Xigua Xiao)
Select high-quality early-season vines bearing watermelons, one or two in number. Cushion them with rice straw and place them in a dry kitchen. On the day of Start of Winter (Lidong), remove the lid of the melon, scoop out seven-tenths of the pulp inside, leaving three-tenths of the flesh attached to the rind. Based on the size of the melon, add two jin (approx. 1 kg) or one-and-a-half jin of Pi Xiao (Mirabilite/Gypsum, specifically crude sodium sulfate), cover it again, and tie it securely with string. Hang it under an eave in a shady location. When the freezing cold period arrives, the nitre will naturally effloresce through the rind to the outside, appearing frost-like in color. Gently brush it off with a broom, collect it in a dish, wrap it well, and retrieve it every three to five days. In spring, store the remaining nitre from the melon properly. Wait until the next Start of Winter, fill fresh melons with it, add another half jin or one jin of nitre, hang it up again, and collect the effloresced substance from the exterior. Repeat this process twice; the nitre obtained in the intermediate stage is also effective, so no further preparation is needed. It can treat throat lichen (Hou Xuan), throat gan (Hou Gan), and various fire syndromes. When blown onto ulcerated areas, it causes no pain. The portion effloresced from the outer skin is named "Silver Powder Snow" (Yin Fen Xue), and its efficacy is comparable to Zi Xue (Purple Snow).
Preparation of Ren Zhong Huang
Take one large bamboo tube of Mao Bamboo, retaining the nodes at both ends. Drill a round hole in one end. Fill the tube completely with finely powdered Da Fen Cao (Licorice Root, *Glycyrrhiza uralensis*), using as much as necessary. Seal the hole with raw lacquer. Scrape off the outer bamboo skin and drill numerous fine holes throughout the entire surface of the tube. Bury it in a large pit. It is fully prepared after ten years, but can be used after six or seven years. It is capable of treating Jie Du (chancre/toxic sores), rotting of the throat, Ya Gan (noma/gangrenous stomatitis), and macules caused by Shang Han (Cold Damage) fever. It is regarded as a holy medicine for these conditions.
Preparation of Bian Bo Zhi (Juice of Biota Leaves)
Pick tender tips of Bi Ye (Biota Tops, *Platycladi Cacumen*) and soak them once in well water. Immediately retrieve them with water and pound them into a paste in a stone mortar. Take a certain amount of the pounded leaves, mix with a small amount of Bai Fan (Alum, *Alumen*) solution, extract the juice, and collect it in a porcelain vessel. When using, dilute with Bai Fan decoction and gargle in the throat. It can treat all types of fire syndromes with stagnant heat, rotting throat, and rotting gan. Its nature is cool, cooling the blood and moistening dryness, clearing fire from the Liver and Stomach. Moreover, it possesses the qi of pine and cypress, and medical texts value it highly; it should not be neglected.
Preparation of Dan Fan
Use Dan (Bile), specifically from Mackerel (*Scomber japonicus*), the quantity being indefinite. Mix it with Bai Fan (Alum, *Alumen*), place the mixture inside a pig bladder, and hang it in a shady place. In the following year, add more bile and allow it to wind-dry again. Repeat this process three times. For acute emergencies, prepare a decoction to induce vomiting upon administration.