This section is from the book "Materia Medica: Pharmacology: Therapeutics Prescription Writing For Students and Practitioners", by Walter A. Bastedo. Also available from Amazon: Materia Medica: Pharmacology: Therapeutics: Prescription Writing for Students and Practitioners.
In Class C we have a large and valued list of cathartics, and these may be subdivided for convenience of study into several small groups. These are.:
(a) Bile and bile-salts.
(c) The mercurials.