"Now, therefore, the Directors of the company are hereby ordered to see that precautions are taken to make travel on said railroad perfectly safe by using a screw with at least twenty-four inches diameter"

This quote by Joshua A. Norton is an instruction to the Directors of the company to make sure the security of passengers taking a trip on the railroad. Norton is buying the Directors to take safety measures to make travel on the railroad safe by utilizing a screw with a size of a minimum of twenty-four inches. This recommends that the Directors ought to utilize a screw of this size to protect the railroad tracks and make sure that the tracks are steady and safe. This would assist to prevent derailments and other mishaps that might take place due to the tracks being unstable. By using a screw of this size, the Directors would be able to ensure that the tracks are protected which passengers can travel securely on the railroad. Norton's instruction is a clear indicator of his commitment to security and his desire to guarantee that travelers can travel securely on the railroad.