醋炙黄用；酒煮令烂，如胶漆用尤良。恶矾石、理石。
咸，平，无毒。入厥阴肝。攻一切症块瘕癖，消诸般恶肉败血。腰痛胁坚，疟母痔核，
肠痈疮肿，惊痫斑痘。除劳瘦骨热，疗难产经阻。
奔豚气痛上冲腹，醋炙三两为末、三棱煨二两为末、桃仁四两，汤浸研汁，水熬良久，
入醋
疟疾不止，醋炙末酒下，夜间一服，至旦一服，临发一服，无不断者。（第二。）
癖症积，醋炙末，牛乳合服，朝朝服之。（第三。）
漏下，为末酒下。（第四。）
猝然腰痛。同上。（第五。）
沙石淋痛。同上。（第六。）
一切疮痈不敛，烧灰掺之。（第七。）
肠痈内痛，烧末水服。（第八。）
人咬指烂，烧灰敷之。（第九。）
咸，寒，有小毒。散血通经，除热解结。续筋骨，涂漆疮。
崩中腹痛，蟹壳烧末，饮下一钱。毛蟹尤良。（验方第一。）
熏壁虱，蟹壳烧烟。（第二。）
蜂虿螫，蟹壳烧末，蜜合敷。（第三。）
生胎欲去，蟹爪同桂心、瞿麦、牛膝为末，每空心酒服一钱。（第四。）
千金神造汤 蟹爪（一升） 甘草（二尺） 东流水（一斗）
以苇子火煎，去渣，入阿胶三两，煎沸顿服。治子死腹中，或双胎一生一死。令生者安，
死
Use after vinegar-processing; boiling with wine until soft and glutinous, resembling gum or lacquer, is particularly effective. It is incompatible with Vitriol (Fan Shi) and Limestone (Li Shi).
Salty, neutral, non-toxic. Enters the Jueyin Liver meridian. Attacks all types of mass formations, fixed masses, and hidden accumulations; eliminates various malignant tissues and stagnant blood. Treats lower back pain, hardness in the hypochondrium, malaria spleen enlargement (Nuomu), hemorrhoidal nodes, intestinal abscesses, sores and swellings, convulsions, epilepsy, macules, and pustules. Eliminates wasting-thirst syndrome with bone-steaming fever; treats difficult labor and menstrual obstruction.
For Ben Tun Qi pain (gas-like sensation rushing up to the abdomen): Take three taels of vinegar-processed [Bie Jia] powdered, two taels of roasted San Leng powdered, and four taels of Tao Ren (Peach Kernel). Soak in water, grind to extract juice, boil with water for a long time, add vinegar...
For persistent malaria: Take vinegar-processed [Bie Jia] powdered, taken with wine. One dose at night, one dose at dawn, and one dose before onset; there are cases that cannot be cured. (Formula 2)
For Pi Zheng accumulation (hidden masses): Take vinegar-processed [Bie Jia] powdered, mixed with cow's milk, taken every morning. (Formula 3)
For Lou Xia (metrorrhagia): Powdered, taken with wine. (Formula 4)
For sudden lower back pain: Same as above. (Formula 5)
For Sha Shi Lin pain (pain from urinary calculi): Same as above. (Formula 6)
For all sores and carbuncles that do not heal: Burn to ash and apply externally. (Formula 7)
For internal pain of intestinal abscess: Burn to fine powder, taken with water. (Formula 8)
For finger ulcers caused by human bites: Burn to ash and apply externally. (Formula 9)
To treat reversed flow of meridians: Slice and stir-fry Yu Biao (Fish Bladder), burn new cotton wool to ash, mix into a fine powder. Take two qian with rice soup each time.
Salty, cold, slightly toxic. Disperses blood and unblocks meridians, clears heat and resolves knots. Reconnects sinews and bones, applies to treat lacquer dermatitis.
For Beng Zhong abdominal pain (profuse uterine bleeding with abdominal pain): Burn crab shell to powder, take one qian with drink. Hair crab is particularly effective. (Verified Formula 1)
To fumigate bedbugs: Burn crab shell to produce smoke. (Formula 2)
For bee or scorpion stings: Burn crab shell to powder, mix with honey and apply externally. (Formula 3)
To expel a dead fetus: Powder crab claws, Gui Xin (Cinnamon Heart), Qu Mai (Dianthus Herb), and Niu Xi (Achyranthes Root). Take one qian with wine on an empty stomach. (Formula 4)
Qian Jin Shen Zao Tang: Crab claws (one sheng), Gan Cao (Licorice Root, two chi), East-flowing water (one dou).
Decoct over reed fire, remove dregs, add three taels of E Jiao (Donkey-hide Gelatin), bring to a boil, and take in one dose. Treats fetal death in utero, or twins where one lives and one dies. Ensures safety for the living, [and deals with the dead]...