19) Power which you see here is in its simplest form. These three giants are of the type which takes main-line express trains from King’s Cross, London, to Yorkshire, Newcastle, and Scotland. The one on the right, incidentally, is being swung round on a turntable by the man holding the lever.

I think I may safely say that Britain makes the best steam engines in the world. We still pin our faith mainly to steam engines, for economic and other reasons, but that is not to say that British Railways avoid using other forms of power. Diesel and diesel-electric engines are in constant use, and the line from Manchester to Sheffield, for example, when it is electrified, will be run entirely by electric locomotives...