But once started in my study, there was no turning back. Within sight of the interlocking tower where I worked there was a freight yard of considerable dimensions; the main lines of the railroad ran through this yard, and cross-over switches connecting one side with the other were protected by what are called yard protection signals. These protection signals, which are located about 1200 feet from the cross-overs, must be thrown to the danger or stop position before the switches can be changed. Once in a while, however, I noticed that the signal in question was put up to danger after an engine had passed, which of course disclosed a very serious state of affairs, for the engine in question was almost certain to get into trouble at the cross-overs. Taking note of this danger, I called it to the attention of the management. The result was, a rule calling for flag protection as well as signal protection at this particular point, but no attention was paid to other yards on the system where the conditions were more or less similar. As a matter of fact, it was not until a serious wreck had occurred that a general rule on the subject was put into force. This rule ordered the employee, after he had placed the signal at the stop position, to wait a sufficient time to allow a train that might have passed the signal to arrive at the cross-overs and thus to proceed in safety. Now I would like railroad men in general to pay particular attention to my criticism of their conduct in relation to this rule and to other illustrations that follow. Here is a necessary law, put into force by the management for the safety of travel and the good of the service. It is a direct appeal to the common sense and honor of employees. Nevertheless, in a short time after the order was issued, it was a dead letter. True, very frequently in clear weather the rule is absolutely unnecessary; but when the weather is foggy, or at places where there is a curve, the failure to observe the rule is liable to result in a wreck. In one month I was a witness to eighteen breaches of the rule on a single division of a railroad. It must be understood that I am now describing my actual experience with men, management, and rules, and the reasons that induced me to follow the matter up and to inquire if the work I am describing can be termed typical of American railroads. Of course, one of my first thoughts in regard to the non-observance of rules related to the lack of adequate supervision by the management. To me it seemed to be a remarkable fact that I could easily follow up the working of a rule and the behavior of the men in regard to it, but the management seldom did anything of the kind. In this way my field for investigation became wider and wider, and I quickly arrived at an idea of the seriousness of the situation, from the standpoint of the people who travel from place to place on the cars.