There had been other "underground railways," but this had a charm of its own, for it "carried freight" both ways.
On the other hand, sixteen underground railways intersect the city and suburbs.
For the great system of underground railways to which it refers was only made in the later years of the nineteenth century.
The Twopenny Tube was the name of one of the first lines of these underground railways.
It has now become quite a habit of Londoners to talk of going "by Tube" when they mean by any of the underground railways.
The underground railways had to shut all stations except those deemed safe.
Nor could the Government take any direct steps to ameliorate the overcrowding on the Underground railways.
And there are also underground railways, railways under the ground in a tunnel.
Tramways are nowhere permitted, the system of underground railways being found amply sufficient for all purposes.