Mahlon Pitney, Texas Pacific Railway Company v…
“ Plaintiff went upon the top of the car at night in the course of his duties in order to test the brake and if necessary to set it, so that the refrigerator car could not run down upon the main track. While walking upon the roof of the car and making ready to descend, it being dark, and the signal lantern that he carried furnishing scanty light upon his path, he stepped upon the casing or coaming of the ice bunker, his foot slipped or turned, and he fell to the ground, receiving serious injuries. ”
