With a title and subtitle like Gaslight: Lantern Slides from the Nineteenth Century, the reader will be forgiven for thinking Joachim Kalka’s book is a collection of visual art. It is not. Though it does contain a handful of visual descriptions, it bears not one illustration, woodcut, or photograph. No lantern slides, and no visual depictions of gaslight. What it has instead are words, many of them, artfully arranged. Kalka’s words, assembled into eleven essays and a preface, are densely packed and remarkably pointed. Although his purpose is to glance back at the nineteenth century, not to historicize it, or even to theorize about it with a particular agenda, Kalka is a highly organized thinker. His insights prove scintillating, if specialized.