"A.B.C. of Snap Shooting: Sporting, Exhibition, and Military" by Horace Fletcher is a practical guide on the art of snap shooting, written in the late 19th century. The book focuses on teaching readers how to quickly and effectively shoot using a rifle, emphasizing economy and skill development in various shooting scenarios. Written during the period when marksmanship was an essential skill for both sport and military purposes, it provides insights into effective shooting techniques and safety practices. The content of the book is structured around the principles of snap shooting, explaining the necessary techniques such as loading, aiming, and firing in a single, swift motion. Fletcher outlines the importance of using a .22 caliber rifle for practice, as well as providing detailed instructions on the types of shots one can take, including cross shots, drop shots, and trap shots. He emphasizes the practice routines involving tossing a bell-ball as a target, which reinforces the skills of timing and accuracy. Additionally, the book outlines rules for practice and competitions, making it a comprehensive resource for both aspiring shooters and those looking to refine their existing skills. (This is an automatically generated summary.)