雷公云∶凡使，勿用花虫壳，其二味相似，只是用之无效。
凡使，先用苦酒与蜜相对秤，二味相和了，将贝齿于酒、蜜中蒸，取出，却于清酒中淘
令净，研用。
雷公云∶凡使，即云治风。元何治风？缘蛇性窜，即令引药至于有风疾处，因定号之为
使。凡一切蛇，须认取雄雌及州土。有蕲州乌蛇，只重三分至一两者，妙也。头尾全、眼不
合、如活者，头上有逆毛二寸一路，可长半分已来，头尾相对，使之入药。被处若得此样蛇
，多留供进。重二两三分者，不居别处也。《干宁记》云∶此蛇不食生命，只吸芦花气并南
风，并居芦枝上，最难采，又不伤害人也。又有重十两至一镒者，其蛇身乌光，头圆尾尖，
逻眼目赤光，用之中也。蛇腹下有白肠带子一条，可长一寸已来，即是雄也。
凡采得，去之头兼皮麟、带子了，二寸许锉之，以苦酒浸之，一宿至明，漉出，向柳木
炭火焙之令干，却，以酥炙之，酥尽为度。炙干后，于屋下巳地上掘一坑，可深一尺已来，
安蛇于中，一宿至明，再炙令干，任用。
凡修事一切蛇，并去胆并上皮了，干、湿须酒煮过用之。
雷公云∶凡使，收得后，糠头炒，令糠头焦黑，取马陆出，用竹刮足去头了，研成末用
之。
雷公云∶芫蜻、斑蝥、亭长、赤头等四件，其样各不同，所居、所食、所效各不同。其
芫蜻觜尖，背上有一画黄；斑蝥背上一画黄、一画黑，觜尖处一小点赤，在豆叶上居，食豆
叶汁；亭长形黑黄，在蔓叶上居，食蔓胶汁；赤头额上有大红一点，身黑。用各有处。
凡修事芫蜻，用糯米、小麻子相拌，同炒，待米黄黑出，去麻子等，去两翅、足并头，
用血余裹，悬于东墙角上一夜，至明取用。
雷公说：凡是使用贝齿时，不要使用花虫壳，这两者味道相似，只是使用时没有疗效。
凡是使用贝齿时，先用苦酒（醋）与蜂蜜按相对重量称量，将两味药混合后，把贝齿放在酒、蜜中蒸制，取出后，再放入清酒中淘洗干净，研磨后使用。
雷公说：凡是使用乌蛇，就说它能治风病。为什么能治风病？因为蛇性善于窜行，所以能引导药物到达有风疾的部位，因此定名为“使”（引经药）。凡是使用一切蛇类，必须辨认其雄雌及产地。有蕲州产的乌蛇，体重在三钱到一两之间的，最为妙用。头尾完整、眼睛不闭合、像活的一样，头上有两寸长的一路逆毛，长约半分，头尾相对，将其入药。如果得到这种样子的蛇，多留供进献或药用。体重二两三分的，不在其他产地出产。《干宁记》记载：这种蛇不吃生物性命，只吸食芦花的气和南风的气息，并且居住在芦枝上，最难捕捉，也不伤害人。又有体重十两到一镒的，其蛇身乌黑光亮，头圆尾尖，眼睛红色光亮，使用中等的药效。蛇腹下有一条白色的肠带子，长约一寸左右，这就是雄蛇。
凡是采得后，去掉头部兼表皮鳞片、白肠带子，约二寸处切碎，用苦酒浸泡，一夜直到天亮，滤出，对着柳木炭火焙干，然后，用酥油炙烤，酥油用尽为度。炙干后，在屋檐下的干燥地面上挖一个坑，深约一尺左右，把蛇放在其中，一夜直到天亮，再次炙烤至干，随意使用。
凡是修整处理一切蛇类，都要去掉胆和上皮鳞，干湿都必须用酒煮过后使用。
雷公说：凡是使用马陆，采收后，用糠头炒，令糠头焦黑，取出马陆，用竹片刮去足和头，研磨成末使用。
雷公说：芫青、斑蝥、亭长、赤头这四种药，它们的形态各不相同，所居住的环境、所吃的食物、所发挥的药效也各不相同。芫青嘴尖，背上有一道黄纹；斑蝥背上一道黄纹、一道黑纹，嘴尖处有一个小红点，居住在豆叶上，吃豆叶汁液；亭长形体黑黄，居住在蔓叶上，吃蔓藤胶汁；赤头额头上有一个大红点，身体黑色。各自有不同的用途。
凡是修整处理芫青，用糯米、小麻子拌在一起，同炒，等到米变成黄黑色时，去掉麻子等，去掉两翅、足和头，用血余（头发）包裹，悬挂在东墙角上一夜，到第二天早晨取用。
Lei Gong said: When using Bechi (Concha Arcae), do not use Huachongke (shell of flower insect), as the two are similar in taste, but the latter is ineffective when used.
When using Bechi (Concha Arcae), first weigh equal parts Kujiu (Vinegar) and Mi (Honey). Mix the two ingredients, then steam the Bechi (Concha Arcae) in the vinegar and honey mixture. Take it out, rinse it thoroughly in Qingjiu (Clear Wine), grind it, and use it.
Lei Gong said: When using Wushe (Agkistrodon), it is said to treat Feng syndrome (Wind-stroke/Paralysis). Why does it treat Feng syndrome? Because the snake has a nature of creeping and penetrating, it can guide medicinal properties to the site of Wind-disease; thus it is named "Shi" (Guide Drug/Leader). When using any kind of snake, one must identify its sex and place of origin. There is Wushe (Agkistrodon) from Qizhou; those weighing between three qian and one liang are excellent. Those with complete heads and tails, eyes not closed, appearing alive, with two cun of reverse hairs on the head forming a line about half a fen long, with head and tail facing each other, are suitable for medicinal use. If such snakes are obtained, keep many for offering or medicinal use. Those weighing two liang and three qian are not produced elsewhere. The *Ganning Ji* records: This snake does not eat living creatures, only absorbing the qi of reed flowers and the south wind, and resides on reed branches. It is hardest to catch and does not harm humans. There are also those weighing ten liang to one yi; their bodies are black and glossy, heads round, tails pointed, eyes red and bright, which are of medium efficacy. A white intestinal belt under the belly, about one cun long, indicates a male snake.
After harvesting, remove the head, skin, scales, and the white intestinal belt. Cut into pieces about two cun long, soak in Kujiu (Vinegar) overnight until dawn. Strain out, dry over willow charcoal fire, then roast with Su (Butter/Ghee) until the Su is exhausted. After roasting dry, dig a pit about one chi deep in a dry place under the eaves. Place the snake inside, leave overnight until dawn, roast again until dry, and use as needed.
When processing all kinds of snakes, remove the gallbladder and upper skin/scales. Whether dry or wet, they must be boiled in Jiu (Wine) before use.
Lei Gong said: When using Malu (Glomeris), after collection, stir-fry with bran husks until the husks turn scorched black. Remove the Malu (Glomeris), scrape off legs and head with bamboo, grind into powder, and use.
Lei Gong said: Yuanqing (Mylabris), Banmao (Mylabris phalerata), Tingzhang (Lytta caraganae), and Chitou (Lytta vesicatoria var.) are four different substances. Their habitats, diets, and effects differ. Yuanqing (Mylabris) has a pointed mouth and a yellow stripe on its back; Banmao (Mylabris phalerata) has a yellow and a black stripe on its back, with a small red dot at the pointed mouth, resides on soybean leaves, and feeds on soybean leaf juice; Tingzhang (Lytta caraganae) is black and yellow in color, resides on vine leaves, and feeds on vine sap; Chitou (Lytta vesicatoria var.) has a large red spot on its forehead and a black body. Each has specific applications.
When processing Yuanqing (Mylabris), mix with Nuomi (Glutinous Rice) and Xiaomazi (Small Hemp Seeds), stir-fry together until the rice turns yellow-black. Remove the seeds, wings, legs, and head. Wrap in Xueyu (Human Hair Charcoal), hang at the east corner of the wall overnight, and use the next morning.