Elihu Burritt,
Walks in the Black Country and its Green Border-Land…
(1868)
“ But Birmingham has given to the world another working-power, a fitting and natural complement to the two great forces we have noticed; as natural and complemental as light is to the heat of the sun. Watt and Boulton, having developed steam at Soho into a working-force for its thousand uses, now educed a light to lighten the towns and villages which that force should build and fill with mechanical industries. ”
