Entrance Gates at a Large Station 167 Central Switch and Signal Tower 168 Interior of a Switch-tower, showing the Operation of Interlocking Switches 171 Stephenson's Steam Driver-brake, patented 1833 192 Driver-brake on Modern Locomotive 192 English Screw-brake, on the Birmingham and Gloucester Road, about 1840 193 English Foot-brake on the Truck of a Great Western Coach, about 1840 193 Plan and Elevation of Air-brake Apparatus 196 Dwarf Semaphores and Split Switch 202 Semaphore Signal with Indicators 203 Section of Saxby & Farmer Interlocking Machine 204 Diagram of a Double-track Junction with Interlocked Switches and Signals 205 Split Switches with Facing-point Locks and Detector-bars 206 Derailing Switch 207 Torpedo Placer 213 Old Signal Tower on the Philadelphia & Reading, at Phœnixville 214 Crossing Gates worked by Mechanical Connection from the Cabin 217 Some Results of a Butting Collision--Baggage and Passenger Cars Telescoped 218 Wreck at a Bridge 219 New South Norwalk Drawbridge. Rails held by Safety Bolts 220 Engines Wrecked during the Great Wabash Strike 222 Link-and-pin Coupler 224 Janney Automatic Coupler applied to a Freight Car 224 Signals at Night 225 Stockton & Darlington Engine and Car 229 Mohawk & Hudson Train 231 English Railway Carriage, Midland Road. First and Third Class and Luggage Compartments 232 One of the Earliest Passenger Cars Built in this Country; used on the Western Railroad of Massachusetts (now the Boston & Albany) 233 Bogie Truck 233 Rail and Coach Travel in the White Mountains 234 Old Time Table, 1843 235 Old Boston & Worcester Railway Ticket (about 1837) 236