（两面俱紫自种者真）
（产苏州龙脑者良）
（即苦壶卢也凡用须细理莹净无 翳者乃佳不尔有毒）
（凡使勿用叶大者不是马齿苋亦无水银忌与鳖同食食之俱变成鳖啮人腹至不可治）
（治肺痈俗名鱼腥草生阴处）
（凡使是男子年可二十以来无疾患颜貌红白于顶心剪切者发是凡于丸散膏中先用苦参水
浸一宿漉出入瓶子以火 之令通赤放冷研用）
（白而不腥者良）
（入药烧用）
（宜用绝干者捣末沸汤沃服之一名金汁埋地中年久者良）
（肥白无病童子味不咸雪白者良）
（溺器中者良火 研）
（取中 近隐处男用女女用男或取汁或烧灰服）
（凡用弥腐烂者佳有一片如三指阔者取得用 灰火罨一夜待腥秽气尽却用童便于瓷锅中
煮一伏时漉出于屋下握得一坑深一尺置骨于中一伏时其药魂归神妙阳人使阴阴人使阳男骨色
不赤女骨色赤以此别之一法同檀香汤洗过酥炙用或烧存性用）
（置酒内覆者男胎也首胎重十五两以上先将酒洗数次血水方尽用银簪脚剔去筋膜封固银
锅内加酒重汤煮一昼夜或文武火焙干一法米泔浸净入猪肚中蒸烂捣膏入药忌犯铁）
（骨细文广者是雌骨粗文狭者是雄骨五色者上白色者中黑色者次黄色者稍得经落不净之
处并妇人采得者不用洗净抟研如粉极细方入药其效始神但是丈夫服空心益肾药中安置圆龙骨
气入肾脏中也雷公所云生用法也一法用酒浸一宿焙干研粉水飞三度用如急用以酒煮焙干或云
凡入药须水飞晒干每斤用黑豆一斗蒸一伏时晒干用否则着人肠胃晚年作热也 得人参牛黄黑
豆良 畏石膏铁 忌鱼）
(If purchased from the market, most are counterfeit. Skip the steps of stir-frying and grinding to an extremely fine powder; after decocting into a medicine, add it in, boil for two or three boils, then pour out.)
(Those with purple on both sides are home-grown and authentic.)
(Dragon Brain (Long Nao, 龙脑) produced in Suzhou is of good quality.)
(It is the bitter gourd (Ku Hu Lu, 苦壶卢). When used, it must have fine texture, be crystal clear and clean, without any opacity, otherwise it is toxic.)
(When using Purslane (Ma Chi Xian, 马齿苋), do not use those with large leaves, as they are not Purslane and do not contain mercury. Avoid eating with soft-shelled turtle, as consuming them together can cause "turtle biting human abdomen" syndrome, which is incurable.)
(Treating Lung Abscess (Fei Yong, 肺痈), commonly known as Houttuynia (Yu Xing Cao, 鱼腥草), which grows in shady places.)
(Those growing on mulberry or locust trees are of good quality; boiled as soup. Some are stored in jars and calcined over high fire to remove smoke but retain nature, then ground into powder for medicinal use.)
(When using Hair (Fa Gou, 发9), select hair cut from the crown of men aged twenty or above, who are free from disease and have a ruddy complexion. For use in pills, powders, and ointments, first soak in Sophora root water (Ku Shen Shui, 苦参水) overnight, drain, place in a bottle, calcine with fire until red hot, cool down, and grind for use.)
(White and non-fishy ones are of good quality.)
(Calcine before use in medicine.)
(Use absolutely dry ones, grind into powder, and take with boiling water. Also known as Jin Zhi (Jin Zhi, 金汁); those buried underground for many years are of good quality.)
(Urine from healthy, fat, white boys whose taste is not salty and color is snow-white is of good quality.)
(That from urinals is of good quality; calcine and grind finely.)
(Take urine from the middle near the genitals: women's urine for men, men's urine for women; or take the juice to drink, or burn to ash and take.)
(When using, rotten and foul-smelling ones are best. Take a piece about three fingers wide, cover with ash fire for one night until the foul smell disappears, then boil in a porcelain pot with fresh boy's urine for one shichen (two hours). Remove and place under the eaves, press into a pit one foot deep, place the bone inside for another shichen. The spirit of the medicine returns miraculously. Yang persons use Yin, Yin persons use Yang. Male bones are not red, female bones are red, distinguish by this. Another method: wash with Sandalwood Decoction (Tan Xiang Tang, 檀香汤), roast with butter, or calcine to retain nature.)
(Those submerged in wine and fermented are male fetuses. First-born fetuses weighing over fifteen taels: wash several times with wine until blood water is gone. Use silver hairpin to remove fascia, seal in a silver pot, add wine, steam over water for a day and night, or bake with mild or strong fire. Another method: rinse clean with rice washing water, steam in pig stomach until soft, mash into paste for medicine. Avoid iron.)
(Fine and broad grain indicates female bone; coarse and narrow grain indicates male bone. Five-colored bones are superior, white bones are medium, black bones are inferior, yellow bones are slightly better. Do not use bones from unclean menstrual flow or obtained by women. Wash clean, knead and grind into powder, extremely fine before adding to medicine for miraculous effect. However, when men take empty-stomach kidney-nourishing medicines, place round Dragon Bone (Long Gu, 龙骨) so its qi enters the Kidney Meridian. Lei Gong said use raw. One method: soak in wine overnight, bake dry, grind powder, water-classify three times. If urgent, boil in wine and bake dry. Or some say all medicines must be water-classified and sun-dried; for every jin, steam with one dou of black beans for one shichen, then sun-dry. Otherwise, it affects intestines and stomach, causing heat in old age. Good with Ginseng (Ren Shen, 人参), Realgar (Niu Huang, 牛黄 - *Note: Niu Huang usually refers to Calculus Bovis, Realgar is Shi Niao; assuming context implies Calculus Bovis based on common pairings, but text says Niu Huang*), Black Beans (Hei Dou, 黑豆). Feared by Gypsum (Shi Gao, 石膏) and Iron (Tie, 铁). Avoid fish.)