Professirs Ayrton And Perry's New Electric Railway: A. Gas Engine Supplying Motive Power; B. Magneto Electric Machine; C, D, E, F, Electric Current Indicators; A, B, C, D, Contact Makers At The Ends Of Each Section; E, F, G, H, Blocking Electro Magnets Attached To Each Section; 1. Blocking Electro-Magnet (Enlarged); 2. Contact Maker, As In Model; 3. Contact Maker As Required For Actual Use; 4. Map Indicator, Automatically Showing The Position Of Trains On The Line