"A Dissertation on the Medical Properties and Injurious Effects of the Habitual Use of Tobacco" is a non-fiction work that explores the impact of tobacco use on human health. Written by A. McAllister, the dissertation provides an in-depth analysis of the medical properties and harmful effects of tobacco, particularly when used habitually. The book draws on scientific research and medical studies to examine the various ways in which tobacco use can damage the body, including its links to lung cancer, heart disease, stroke, and other serious health problems. Overall, "A Dissertation on the Medical Properties and Injurious Effects of the Habitual Use of Tobacco" provides a comprehensive and detailed analysis of the dangers of tobacco use, and serves as an important reminder of the need to prioritize public health when it comes to substance use.