| 21. | Mains water appeared in 1864, and gas lighting by 1865.
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| 22. | Acetylene was also used from about 1898 for gas lighting on a smaller scale.
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| 23. | In 1857 he began concentrating on gas lighting and fertilizers.
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| 24. | Also in 1877, the first public gas lighting was introduced.
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| 25. | Among the economic impacts of gas lighting was much longer work hours in factories.
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| 26. | Throughout the 19th century, the use of gas lighting increased.
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| 27. | Murdoch invented gas lighting and did experiments on steam engines.
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| 28. | Romantic ballet owed much to the new developments in theatre effects, particularly gas lighting.
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| 29. | It was the first museum to offer evening hours, made possible by gas lighting.
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| 30. | In 1826 the theatre had been the first in Italy to install gas lighting.
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