-It is a serious reflection that the ground in London
is ill-fitted for heavy. structures. St. Paul's Cathedral, if not Waterloo Bridge, gave us a plain warning. Nowadays we set up immensely heavy stone and steel- and concrete buildings without reference to the fact that underneath London there is a rabbit-warren of burrowing for Tubes and sewers and water-mains and telegraph and telephone wires, and that in certain places the soil is light and is pierced by ancient streams.
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