up - When we recently reconstructed for a documentary film the first railways as they were created in England and France, an amusing incident happened: a cow came and stood in front of the locomotive and stopped the convoy...

down - Now, among modern locomotives, the most powerful of all are undoubtedly those which circulate on American lines, across the great prairies of the West where cattle roam freely. All are equipped at the front with a special device intended to push careless animals to the side of the track.