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[Non-toxic]
Bombyx Batryticatus (Silkworm Cocoon) mainly treats carbuncles and swellings without heads. When burned to ash and taken with wine, it will break open the next day. It also treats various gan ulcers, hematochezia, stranguria with blood, and metrorrhagia. Drinking its decoction stops polydipsia (Xiao Ke), regurgitation, and expels roundworms.
(Compendium of Materia Medica)
[Name] Jian Weng (Cocoon Jar)
[Origin] Found everywhere.
[Season] Grows in April and May; harvested in May.
[Medicinal Part] Cocoons from which moths have emerged.
(Tao Hongjing stated that Bombyx Batryticatus should be used with Atractylodis Rhizoma.)
[Texture] Egg-shaped, hollow, as thin as paper.
[Color] White-yellow.
[Taste] Sweet.
[Nature] Warm.
[Efficacy] (Li Shizhen said) Bombyx Batryticatus is widely used in formularies, yet omitted by various materia medica texts, which is a deficiency. In recent times, it has been used to treat carbuncles and furuncles as a substitute for acupuncture needles: one cocoon produces one head, two cocoons produce two heads, with miraculous efficacy. Its decoction treats polydipsia, highly praised in ancient formulas. (Zhu Danxi said) This substance belongs to Fire but possesses Yin functions; it can drain the Ministerial Fire in the Bladder and guide Clear Qi to ascend to the mouth, thus stopping thirst. The efficacy of silk-reeling soup and boiled silk floss is identical. Additionally, Yellow Silk Gauze can tonify the Pa (Bladder), and Brocade Ash stops bleeding, both seen in the Insects and Fish section of this volume.
[Combined Treatments] (Chen Wenxiao's Pediatric Formula) For treating impetigo-like erosion of smallpox with continuous pus, use cocoons from which silkworm moths have emerged, fill them with raw Alum powder, calcine until dry, grind into powder, and apply externally with great effect. ○ (Another Formula) For treating sores on the mouth and tongue, take five Bombyx Batryticatus, wrap them with Peng Sha (Borax), roast over charcoal on a tile until charred, grind into powder, and apply. ○ (Hui Ji Fang) For treating regurgitation with vomiting of roundworms and food, boil ten Bombyx Batryticatus in water, cook three eggs in the liquid, consume, and wash down with unfermented wine, twice daily, with miraculous effect. Alternatively, cook millet porridge with silk-reeling soup and eat. ○ (Sheng Hui Fang) For treating hematochezia and hematuria, metrorrhagia, painful stranguria with blood in women, and wind-intestinal bleeding, use Huang Can Tui Zhi (Yellow Silkworm Molt Paper) calcined to retain its nature, Wan Can Sha (Late Silkworm Sand), Bai Jiang Can (White Stiff Silkworm) stir-fried, ground equally into powder, add a little Moschus, take 2 qian per dose, washed down with rice drink, three times daily, with great effect. Named Jie Huang San.

[Non-toxic]
Huang Si Juan (Yellow Silk Gauze) mainly treats bladder damage in postpartum women causing urinary retention or continuous dribbling. ○ Burned to ash, it stops bloody dysentery, lower gastrointestinal bleeding, hematemesis, and metrorrhagia. ○ Decoction stops polydipsia; washing with it treats ulcerated smallpox lesions.
(Compendium of Materia Medica)
[Name] (Li Shizhen said) Juan is a type of coarse silk fabric. Raw silk is called Juan, cooked/bleached silk is called Lian.
[Origin] Found everywhere.
[Season] Weaving has no fixed time.
[Harvest] Usage has no fixed time.
[Medicinal Part] For medicinal use, new Yellow Silk Gauze is required, woven from the natural yellow silk spun by silkworms into cocoons, not dyed.
[Texture] Uneven length and width.
[Color] Yellow.
[Taste] Sweet.
[Nature] Warm.
[Combined Treatments] (Ji Jian Fang) For treating metrorrhagia in women, mix 5 fen of Huang Juan Hui (Yellow Silk Gauze Ash), 1 qian of Zong Lv Hui (Palma Leaf Ash), 5 fen each of Guan Zhong Hui (Cyatheae Spora Ash), Jing Mo Hui (Beijing Inkstone Ash), and He Ye Hui (Lotus Leaf Ash). Mix with water and wine and take to stop bleeding immediately. ○ (Fu Ren Liang Fang) For treating postpartum bladder damage with continuous urinary dribbling, take 3 chi of Huang Si Juan, boil in lye water made from charcoal ash until extremely soft, rinse with clear water, add Ban Liang of Cera Flava (Yellow Beeswax), 1 liang of Mel (Honey), 2 qian of Imperatae Rhizoma, and 2 qian of Boveriti Pulvis. Decoct with 1 sheng of water until reduced to 1 zhan. Take on an empty stomach in one dose. Do not make noise during administration, or it will be ineffective. Named Gu Bao San. ○ (Another Formula) For treating bladder injury during childbirth resulting in inability to urinate for a whole day with only continuous dampness/dribbling, take 1 chi of raw silk Yellow Silk Gauze, 1 qian each of Baidan Pi Mu (Moutan Cortex) powder and Bai Ji (Bletillae Rhizoma) powder. Decoct with 2 bowls of water until the gauze dissolves like syrup. Take orally. Do not make noise, and it will be effective. Ash of Fei Juan (Red Silk Gauze) is added to malaria medicines. (Gang Mu Appendix)