The Pneumatic Despatch Tube System of the Batcheller Pneumatic Tube Co. Also, Facts and General Information Relating to Pneumatic Despatch Tubes

"The Pneumatic Despatch Tube System of the Batcheller Pneumatic Tube Co." by B. C. Batcheller is a non-fiction work providing an extensive look at pneumatic tube systems during the late 1800s, focusing on the development and use of this technology in postal services. The book examines the technical aspects, how the systems worked, and why they were a good solution for rapidly moving mail within urban areas. It begins by explaining why the author put the book together, noting interest from engineers and postal workers. The book starts with a history of pneumatic transmission ideas, then explains how the Philadelphia postal tube system worked, and finally goes into the theories of how air flows in tubes. Batcheller aims to explain both the practical uses and the engineering details of this new way to transport post.