雷公云∶剡州生者，仓州、太原者上。其骨细、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。经落不净之处不用，妇人采得者不用。
夫使，先以香草煎汤浴过两度，捣研如粉，用绢袋子盛粉末；了，以燕子一只，擘破腹
，去肠，安骨末袋于燕腹内，悬于井面上一宿；至明，去燕子并袋子，取骨粉重研万下，其
效神妙。
但是，丈夫服，空心。益肾药中安置，图龙骨气入肾脏中也。
雷公云∶凡使，多有伪者，不如不用。其香有三等∶一者名遗香，是麝子脐闭满，其麝
自于石上，用蹄尖弹脐，落处一里草木不生，并焦黄；人若收得此香，价与明珠同也。二名
膝香，采得甚堪用。三名心结香，被大兽惊心破了，因兹狂走，杂诸群中，遂乱投水，被人
收得。擘破见心流在脾上，结作一大干血块，可隔山涧早闻之香，是香中之次也。
凡使麝香，并用，子日开之，不用苦细，研筛用之也。
雷公云∶凡使，有四件∶第一是生神黄，赚得者；次有角黄，是取之者；又有心黄，是
病死后识者剥之，擘破取心，其黄在心中，如浓黄酱汁，采得便投于水中，黄沾水复硬，如
碎蒺藜子许、如豆者、硬如帝珠子；次有肝黄，其牛身上光，眼如血色，多玩弄，好照水，
自有夜光，恐惧人，或有人别采之，可有神妙之事。
凡用，须先单捣，细研如尘，却，绢裹，又用黄嫩牛皮裹，安于井面上，去水三、四尺
已来，一宿至明，方取用之。
雷公说：剡州出产的龙骨，以及仓州、太原出产的，品质为上等。骨骼纹理细密、纹路宽阔的，是雌龙；骨骼粗糙、纹路狭窄的，是雄龙。
骨色五彩斑斓的为上等，白色的为中等，黑色的稍次，黄色的勉强可用。经过不洁净场所（如经血污染处）的不用，由妇女采集的不使用。
在使用时，先用香草煎汤将龙骨清洗两遍，然后捣碎研磨成粉末，用绢袋盛装粉末；完成后，取一只燕子，剖开其腹部，去除内脏，将装有骨粉的袋子放入燕腹内，悬挂在井口上方过夜；到了第二天早晨，取出燕子和袋子，将骨粉再次研磨一万次，其药效神妙。
但是，男性服用时，需空腹服用。将其置于益肾药物中一起使用，目的是利用龙骨的气味进入肾脏。
雷公说：凡使用麝香，市面上多有伪造品，不如不使用。麝香分为三等：第一种叫“遗香”，是麝子脐部封闭饱满时，麝自己在石头上，用蹄尖弹破脐部，掉落之处一里内的草木不生，且呈焦黄色；人若收集到这种香，价格与明珠相同。第二种叫“膝香”，采集后非常堪用。第三种叫“心结香”，是被大型野兽受惊后撞破心脏，因此疯狂奔跑，混入兽群中，最终乱投水中，被人收集到的。剖开可见心脏流出的血液积聚在脾上，凝结成一大块干血块，隔着山涧都能闻到的香气，这是香中的下等。
凡是使用麝香，都用子日开启，不要刻意研得过于细碎，只需研磨筛选后使用即可。
雷公说：凡使用牛黄，有四类：第一是“生神黄”，是通过欺骗手段获得的；其次有“角黄”，是直接从角中取得的；又有“心黄”，是在牛病死后识货者剥开尸体，剖开心脏取得，其黄位于心中，像浓稠的黄酱汁，采集后立即投入水中，牛黄沾水后会变硬，大小如碎蒺藜子或豆子，硬度如同帝珠子；其次有“肝黄”，其牛身上光泽，眼睛呈血色，喜欢玩耍弄水，喜欢照水，自有夜光，畏惧人，或者有人另外采集它，可能会有神妙之事。
凡是使用牛黄，必须先单独捣碎，细细研磨如灰尘状，然后用绢包裹，再用黄嫩牛皮包裹，放置在井口上方，距离水面三、四尺左右，过夜至第二天早晨，方可取用。
Lei Gong said: Longgu (Fossilized Bones, *Longgu*) produced in Shanzhou, as well as those from Cangzhou and Taiyuan, are of the highest quality. Those with fine bone texture and broad patterns are female; those with coarse bone texture and narrow patterns are male.
Those with five-colored bones are superior; white ones are medium grade; black ones are inferior; yellow ones are barely acceptable. Do not use those found in unclean places or those collected by women.
When preparing it, first wash it twice by bathing in a decoction made from aromatic herbs. Then crush and grind it into powder, and store the powder in a silk bag. Take one swallow, split open its abdomen, remove the entrails, place the bag containing the bone powder inside the swallow's belly, and hang it above a well overnight. At dawn, remove the swallow and the bag, and grind the bone powder ten thousand times more; its efficacy is miraculous.
However, when taken by men, it should be consumed on an empty stomach. It is placed within kidney-nourishing formulas to facilitate the Qi of Longgu entering the Kidney organ.
Lei Gong said: In practice, there are many counterfeit products; it is better not to use them at all. Musk (*Shexiang*, *Moschus*) is divided into three grades: The first is called "Yi Xiang" (Lost Fragrance), which occurs when the musk deer's scent sac is full and closed. The deer rubs its sac against a stone until it bursts with its hoof tip; where the substance falls, no grass or trees grow for a li, and the substance turns scorched yellow. If obtained, this fragrance is worth as much as a bright pearl. The second is called "Xi Xiang" (Knee Fragrance), which is harvested and very suitable for use. The third is called "Xin Jie Xiang" (Heart-Knot Fragrance), which results when a large beast startles the deer, breaking its heart. The deer runs madly, mixes with other herds, and eventually jumps into water, where it is retrieved by humans. Upon splitting open, blood flows from the heart and accumulates on the spleen, forming a large dry blood clot. This fragrance can be smelled across a mountain stream and is considered the lowest grade among musks.
When using Shexiang, it should be opened on Zi days. It should not be ground too finely; simply grind and sieve it for use.
Lei Gong said: There are four types of Niuhuang (Calculus Bovis, *Niuhuang*): The first is "Sheng Shen Huang" (Living Divine Yellow), obtained through deception. The second is "Jiao Huang" (Horn Yellow), extracted directly from the horn. The third is "Xin Huang" (Heart Yellow), identified and removed by experts after the ox dies of illness; upon splitting the heart, the calculus is found inside, resembling thick yellow sauce. Immediately after collection, it is thrown into water, where it hardens like crushed Tribulus seeds or beans, becoming as hard as imperial pearls. The fourth is "Gan Huang" (Liver Yellow); the ox has a glossy body, reddish eyes, enjoys playing with water, reflects light, possesses night-glowing properties, and fears humans. Alternatively, if collected separately, it may possess miraculous properties.
When using Niuhuang, it must first be individually pounded and ground finely like dust. Wrap it in silk, then wrap that in fresh yellow cowhide. Place it above a well, about three to four feet above the water surface, and leave it overnight until morning before use.