George Henry Fox's 'A Practical Treatise on Smallpox' is a seminal work in the field of dermatology, offering comprehensive insights into the identification, treatment, and prevention of smallpox. Written in a clear and accessible style, the book serves as a practical guide for medical practitioners, providing detailed descriptions of the disease's symptoms and evolution. Fox's meticulous observations and precise medical descriptions reflect the author's deep understanding of the subject matter, making this treatise a valuable resource for both novice and experienced healthcare professionals. Set against the backdrop of the late 19th century, the book sheds light on the medical practices and challenges of the era, offering a historical perspective on the management of infectious diseases. George Henry Fox's expertise as a dermatologist and his dedication to advancing medical knowledge are evident in this groundbreaking work, ensuring its enduring relevance in the field of dermatology and infectious diseases. I highly recommend 'A Practical Treatise on Smallpox' to anyone interested in the history of medicine and the study of infectious diseases.