If any person shall run, or cause to be run, a locomotive propelled by steam upon or across the track of any other railroad company without first coming to a full stop just before it comes upon or across such track, he shall, on conviction, be fined not less than twenty-five dollars nor more than one thousand dollars, or imprisoned in the county jail not more than one year, or both; and if, by reason of his coming upon or across such track, some person shall be killed or injured, he shall, upon conviction, be imprisoned in the penitentiary not more than fifteen years.