Show gasoline preferred tiny engine set above Abe upper roll roll rail car car ear car ear eat car ear eat cat horizontal preserve balance principle system dr pend grade curve negotiable average expense expense expose building track 2000 mila counties 8 nova scotia bay bay hay bay hay hat 1000 1000 mile build line short line already ottawa quo amongst dream science appear feasible owing gyroscope principle boy burn top equilibrium speedy original design light railway cheap rate country transportation six inch rail bard bard hard wood metal five six feet apart subsidiary rail couple feet below car astride track bottom above wheel along top rail horizontal etch subsidiary rail propulsion |