If one wants an idea of what the Culebra Cut looked like, when the Panama Canal was being dug through the mountains, it is only necessary to go to the ore mines near Duluth. There are the same great terraces, the same steam shovels, digging and loading the dirt, the same engines and trains, and in some of the pits the forms are even fine—amphitheatres,—only the seats and steps are gigantic. But when the shadows begin to creep up from below, the place becomes a theatre for the gods, a theatre where there are no spectators, and the actors are the steam shovels with their white plumes and the engines with their black clouds. But they are finer far than any poor mummer's makeshifts. And every now and then comes a burst of applause as a blast is fired more thrilling than ever heard in a play theatre. This is the theatre of the Wonder of Work.