Coal gas rivaled smoky oil lamps and flickering candles, and early in the new century, well-to-do Londoners grew accustomed to gaslit houses and even streets.

How long until they go the way of gas street lamps and morning milk deliveries?

Hermione waved her wand to ignite the old gas lamps, then, shivering slightly in the drafty room, she perched on the sofa, her arms wrapped tightly around her.