Ian Hay, The Last Million: How They Invaded France…
“ The train usually waited two or three minutes in each station (instead of ten seconds as now) , and it required a full hour to travel from King’s Cross to Charing Cross. It was impossible to see to read a newspaper, so that passengers, to pass the time, used to rob, assault, and occasionally murder one another. With the coming of electric traction the old Underground was cleaned up and refurnished. At the same time, the Tubes were constructed away down in the [xxi] London clay, where there could be no interference from oozy gravel, or gas mains, or sewers. ”
