Oliver Wendell Holmes, Jr.

“ When cars of either road seek to enter the yard the tower man generally telephones to the yardmaster to find out whether he is in condition to receive them, and when cars are to go out the yardmaster telephones to the tower man to know if they can pass; but the yardmaster has no authority over the tower man and his telephone either way is not conclusive of the tower man's action. Conversely the tower man has no authority over him. ”

“ Two yardmasters were kept on duty for twelve hours each, by the railroad company in its Corwith Yard, Chicago, and the question is whether upon the statement of their duties they fell within the Act, bearing in mind that 'the purpose of the statute is to promote safety in operating trains by preventing the excessive mental and physical strain which usually results from remaining too long at an exacting task. ”