微寒，无毒。
发明 河沙得水土之气，故夏月发 子，通石淋，主绞肠沙痛，用沙炒热，冷水
淬之，
澄清服效。又风湿顽痹不仁，筋骨挛缩，六月取河沙曝热，伏坐其中，冷即易之，取微汗，
忌风冷劳役，不过数次愈。其玉田沙，夏月发麻疹良。
甘寒，无毒。
发明 石燕出祁阳西北江畔沙滩上，形似蚪而小坚，重于石，俗云因雷雨则自石
穴中出
，随雨飞堕者，妄也。其性寒凉，乃利窍行湿热之物，故能疗眼目障翳，磨水不时点之。热
淋煮汁饮之。妇人难产，两手各执一枚即下，然不若磨汁饮之，仅似有理。
甘寒，无毒。
发明 石蟹生南海近海，州郡皆有之，体质石也，与蟹相似。或言崖州榆林港内，
土极
细最寒，蟹入不能运动，片时成石，亦妄言也。其性咸寒，质坚，能磨翳积，故青盲，目淫
肤翳、丁翳、漆疮，皆水磨点涂。催生下胎，疗热结血晕，热水磨服。
温，微毒。
发明 蛇黄生蛇腹中，如牛黄之类。世人因其难得，遂以蛇含石醋 、水飞代之。
取蛇
之性窜入肝也。蛇含石入手足厥阴血分，与代赭之性不甚相远；为小儿镇摄惊痫之重剂，脾
风泄泻者宜之。
即雷楔
温，无毒。
发明 雷楔禀东南水火之气，治小儿惊痫，磨汁服之。作枕辟恶梦不祥，镇邪疟
。刮屑
杀瘵虫，下蛊毒。置箱篑不生蛀虫。佩之安神，治惊邪之疾。
性微寒，无毒。
【发明】河沙禀受水土之气，因此在夏季孵化出“子”（指其内部结构或相关现象），能通利石淋（泌尿系结石），主治绞肠痧（一种以剧烈腹痛为特征的急症）。使用时将沙炒热，用冷水淬炼，取澄清液服用有效。另外，对于风湿顽痹导致的肢体麻木、筋骨挛缩，可在六月选取河沙暴晒至热，让人伏坐其中，沙子变冷即更换，直至身体微微出汗为止。治疗期间需忌避风寒及劳累，通常不过数次即可痊愈。其中的玉田沙，在夏季用于发透麻疹效果良好。
性甘寒，无毒。
【发明】石燕产于祁阳西北江畔的沙滩上，形状像蝌蚪但较小且坚硬，比石头还重。民间传说它因雷雨天气从石穴中飞出，随雨坠落，这是荒谬的说法。石燕性寒凉，是通利窍道、行散湿热的药物，因此能治疗眼目障翳（眼部遮蔽视力的病变），磨成水后不时滴眼。治疗热淋（小便短赤涩痛），可煮汁饮用。妇人难产时，双手各握一枚即可分娩，但这不如磨汁饮用的说法更有道理。
性甘寒，无毒。
【发明】石蟹生于南海近海地区，各州郡都有，质地如石，外形与螃蟹相似。有人说崖州榆林港内泥土极细且最寒，螃蟹进入后无法运动，片刻间变成石头，这也是荒谬之言。石蟹性咸寒，质地坚硬，能磨除眼内翳积，因此青盲（视力减退或失明）、目淫肤翳（眼睑或角膜上的赘生物）、丁翳（点状翳膜）、漆疮（接触性皮炎），均可用水磨后点涂患处。催生下胎，治疗热结血晕（产后因瘀血阻滞引起的头晕昏厥），可用热水磨服。
性温，微毒。
【发明】蛇黄生于蛇腹中，类似牛黄。世人因其难得，便用蛇含石经醋制、水飞法处理后代替。取其蛇之性窜入肝脏的作用。蛇含石归入手足厥阴肝、心包经的血分，性质与代赭石相差不大；作为小儿镇惊安神、治疗惊痫的重剂，适用于脾风泄泻者。
即雷楔。
性温，无毒。
【发明】雷楔禀受东南水火之气，用于治疗小儿惊痫，磨汁服用。制作枕头可辟除恶梦和不祥，镇压邪气疟疾。刮下粉末可杀灭瘵虫（结核杆菌等消耗性疾病病原体），排出蛊毒。置于箱笼中可防止蛀虫产生。佩戴它能安神，治疗惊邪类疾病。
Slightly cold, non-toxic.
[Invention] He Sha (River Sand) inherits the Qi of water and earth; therefore, it "produces offspring" in summer, unblocks Stone Lin (urinary calculi), and treats Jiao Chang Sha (a acute condition characterized by severe abdominal pain). It is effective when taken as a clarified liquid after being heated in sand and quenched with cold water. Furthermore, for stubborn Bi syndrome caused by wind-dampness leading to numbness and tendon contraction, river sand can be selected in the sixth month, exposed to the sun until hot, and the patient sits prone upon it. The sand should be replaced when it cools down, continuing until a slight sweat appears. Wind-cold and overexertion must be avoided during treatment; recovery usually occurs within a few sessions. Yu Tian Sha (Sand from Yutian) is excellent for inducing the eruption of measles in summer.
Sweet and cold, non-toxic.
[Invention] Shi Yan (Stone Swallow) is found on the sandy beaches along the northwest banks of rivers in Qiyang. Its shape resembles a tadpole but is smaller, harder, and heavier than stone. The folk belief that it flies out of stone caves during thunderstorms and falls with the rain is absurd. Its nature is cold and cooling; it is a substance that benefits orifices and moves damp-heat. Therefore, it can treat eye obstructions and cataracts (Zhang Yi); it should be ground into water and applied to the eyes frequently. For Heat Lin (dysuria with scanty, dark urine), the decoction can be drunk. In cases of difficult labor in women, holding one piece in each hand facilitates delivery, though grinding it into juice for ingestion seems more logical.
Sweet and cold, non-toxic.
[Invention] Shi Xie (Stone Crab) grows in the coastal waters of the South Sea and is found in various prefectures. Its texture is stony, resembling a crab. Some claim that in Yulin Port, Yazhou, the soil is extremely fine and cold, causing crabs entering it to become immobile and turn to stone in moments; this is also an absurd statement. Its nature is salty and cold, and its texture is hard. It can grind away ocular accumulations and opacities. Therefore, for Qing Mang (blindness), Yin Fu Zhang Yi (eyelid or corneal proliferations), Ding Yi (punctate opacities), and Qi Chuang (contact dermatitis), it can be ground with water and applied topically. To induce labor and expel retained placenta, or to treat Heat-Jie Xue Yun (postpartum dizziness and fainting due to blood stasis and heat), it can be ground with hot water and ingested.
Warm, slightly toxic.
[Invention] She Huang (Snake Gallstone) grows inside snakes, similar to Niu Huang (Calculus Bovis). Because it is rare, people substitute it with She Han Shi (Ophicalcite) processed with vinegar and levigated with water. This utilizes the property of snake-related substances to penetrate into the Liver. She Han Shi enters the Blood aspect of the Hand and Foot Jueyin meridians (Liver and Pericardium); its nature is not very different from Dai Zhe Shi (Magnetitum). It serves as a heavy agent for calming fright and treating epilepsy in children, and is suitable for those with Pi Feng Xie Xie (spleen-wind diarrhea).
Also known as Lei Xi.
Warm, non-toxic.
[Invention] Lei Xi (Thunder Wedge) inherits the Qi of water and fire from the southeast. It treats pediatric fright and epilepsy when ground into juice and ingested. Made into a pillow, it wards off evil dreams and inauspicious signs, and suppresses malignant malaria. Scraped powder kills Zhai Chong (parasites associated with consumption diseases like tuberculosis) and expels Gu Du (gu poison). Placing it in chests prevents insect infestation. Wearing it calms the spirit and treats disorders caused by fright and pathogenic influences.