The Dragonfly or Reactive Passive Locomotion: A Vacuum Theory of Aerial Navigation, Based on the Principle of the Fan Blower is a book written by Thaddeus Hyatt in 1882. The book explores the theory of how dragonflies are able to fly and navigate through the air using reactive passive locomotion, which is a form of movement that relies on the use of air currents and pressure differentials to generate lift and control movement. Hyatt's theory is based on the principle of the fan blower, which he believed was the key to understanding how dragonflies are able to fly. He argues that the wings of the dragonfly act like a fan, creating a vacuum that allows the insect to lift off the ground and move through the air. The book provides a detailed analysis of the anatomy and physiology of the dragonfly, as well as the physics of flight and aerodynamics. It also includes illustrations and diagrams to help readers understand the concepts and theories presented in the book. Overall, The Dragonfly or Reactive Passive Locomotion is a groundbreaking work that offers a unique perspective on the science of flight and the natural world. It is a must-read for anyone interested in the study of insects, aerodynamics, or the history of scientific thought.To Which Is Appended Some Remarks On Water And Its Navigation.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.