""Defense of the Doctrine of Vital Affinity"" is a book written by William Pulteney Alison, published in 1852. The book discusses the concept of vital affinity, which is the idea that living organisms have a unique relationship with certain substances in the environment that allows them to maintain life. Alison argues that this concept is essential to understanding the processes of digestion, respiration, and other vital functions in the human body. He also explores the history of the doctrine of vital affinity, its relationship to other scientific theories, and its implications for medical practice. The book is written in a scholarly style and includes many references to scientific literature of the time. Overall, ""Defense of the Doctrine of Vital Affinity"" is an important work in the history of science and medicine, and provides valuable insights into the understanding of the human body and its functions.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.