Salts and Senna, A Cathartic: In Seven Doses is a medical book written by William Freeman and published in 1869. The book provides detailed information about the use of salts and senna as a cathartic, which is a substance that promotes bowel movements and relieves constipation. The author explains the properties and benefits of these natural substances and provides instructions on how to use them safely and effectively. The book is divided into seven...