tendent was interrupted at frequent intervals by questions from the attorney-general and the commissioners. He, the manager, was called upon to explain, not only the rules of the road, but the commonest principles and movements in the train service. “What is a ‘block’?” “What do you mean by ‘O.K.’ and ‘complete’?” “Explain in detail your train-order system.” “As a matter of curiosity let me ask how this signal works.” These questions are not put as a mere legal form or habit, for many of the points call for reiterated explanation before they are comprehended by the board. The language is plain enough: they don’t understand this, they are not familiar with that, and the section of track on which the accident happened they know nothing about. In a word, the board goes to school to learn something about the elements of railroading and the details of train movements by telegraph, and having in this way been thoroughly drilled into an understanding of the accident, and having listened to all the evidence, the investigation comes to an end.
On October 11, 1907, the finding or report of the commissioners was published. After reviewing the accident, the evidence in relation to it, and the methods of operation in the train service of the Boston & Maine Railroad, all of which was, in fact, simply a reproduction of the testimony of the gen-
