This section is from the book "Materia Medica Pharmacy, Pharmacology And Therapeutics", by W. Hale White. Also available from Amazon: Materia Medica Pharmacy, Pharmacology And Therapeutics..
Argenti Nitras Fusus. Moulded Nitrate Of Silver. Synonyms.-Lunar caustic. Lapis infernalis.
A white, hard solid, generally in the form of pencils of a fibrous fracture, becoming gray or grayish-black on exposure to light.