Kaolin
Boericke, Pocket Manual of Homœopathic Materia Medica, 9th ed., 1927, p. 382
Bolus alba (China Clay) Alumina Silicate A remedy for croup and bonchitis.
Nose
Itching and burning. Discharge yellow. Sore, scabby, stopped up.
Respiratory
Soreness of chest along trachea; cannot stand percussion. Gray sputa. Capillary bronchitis. Larynx and chest sore. Membranous croup—extends down trachea.
The book’s Dose section is left out: Samepath quotes the books but gives no dosing advice.