The History of Pneumatic Tubes

The pneumatic post first started in London in 1853 but the technology transferred very quickly to other cities. By 1945 there were 450 kilometers of pneumatic tubing lining Paris's underground making it possible to get a handwritten note Across Paris in less than two hours without even breaking us wet. The tube east rings an electric bell to alert the tube east on the receiving end that there's an incoming canister and then It's hurtling through Paris's underbelly so fast that the sending to beast could actually hear the canister arriving at its destination.