Compare the few small panes set in marble in
the greatest of ancient churches with the tremendous fenestration of
our modern steel frame factories where production can be carried on
by daylight, in climate under human control, no matter what the outside
weather may be. Window glass has not only improved the living conditions
of man but has contributed tremendously to the development of modern
industry.
Professor R. E. Danforth, of Rutgers College,
has said in the Scientific Monthly: "The great change in home life
and the change in industrial life, and in the industries themselves could
not begin until an abundance of cheap glass filled all homes with a flood
of daylight, and all shops and offices and factories as well, keeping in
the artificial heat at the same time. A host of new industries sprang
into being in the wake of window glass, and these begat other industries,
scientific inventions and discoveries, with magic
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