human
He said at first there was one passenger and one freight train a day, that freight came from Cincinnati to Frankfort by river, and from Frankfort to Lexington by rail. When asked where the headlight for the locomotive was, he replied:
gpt
They did not need a headlight because they only travelled by daylight. (And yet one of the English commentaries which had made deepest impression on the railroad promoters was that
human
Locomotives can travel safely in the dark.