Salts and Senna: A Cathartic in Seven Doses (1869) is a medical book written by an anonymous author. The book provides a detailed description of the use of salts and senna as a cathartic, or a laxative, in seven different doses. The author explains the properties of these substances and how they work to stimulate bowel movements. The book also discusses the benefits and risks associated with using cathartics, as well as the proper dosage for different...