"A Mechanico-Physiological Theory of Organic Evolution" is the work of the Swiss biologist Carl Nageli, which is devoted to the study of organic evolution from a mechanico-physiological point of view. In this book, the author tries to explain evolutionary processes through the mechanical and physiological laws of living organisms. Naegeli offers his unique theory, in which he combines the concepts of evolution and physiology, trying to discover new depths of understanding of the nature of the living world. This book is an important contribution to the development of scientific thought about evolution and heredity.