The Enlightenment's most shocking spectacle: a bird in a vacuum.
In short: In 1768, Joseph Wright of Derby captured a moment of scientific brutality. A bird is deprived of air in a glass vessel while a crowd watches in a mix of dread and fascination. It was a masterpiece of 'brain food,' elevating the industrial revolution to the status of high art.
The painting depicts a 'natural philosopher' recreating an experiment by Robert Boyle. In 1659, Boyle commissioned a 'pneumatic engine'—an early vacuum pump—to study the properties of air. Because these machines were incredibly expensive and temperamental, only a handful existed in the 1660s. Boyle often relied on the technical skill and dramatic flair of Robert Hooke to perform public demonstrations, which were often the only way to prove his theories on combustion, magnetism, and sound.
Boyle’s specific interest in life led to 'Experiment 41,' where he tested the necessity of air for respiration. He observed various creatures, including mice, eels, and snails, but his notes on an injured lark are particularly visceral. He described the bird appearing lively until the air was sufficiently removed, at which point it suffered 'violent and irregular Convulsions' similar to poultry whose heads are wrung off.
By the time Wright painted this scene in 1768, air pumps had become common tools for itinerant 'lecturers in natural philosophy.' These showmen performed the 'animal in the air pump' experiment as a centerpiece for paying audiences. Some, like James Ferguson, even suggested using a 'lungs-glass'—a mechanical bladder—because the reality of killing a living creature was considered 'too shocking' for those with a degree of humanity.
Wright’s choice to depict this scene with the reverential lighting usually reserved for religious icons was a radical artistic move. It signaled a shift in the Enlightenment: the 'miracles' of the technological age were now viewed as being as awe-inspiring as the divine. By placing a scientific experiment in a candlelit nocturne, Wright argued that human discovery was the new sacred narrative.
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- Summary by Intellect · source: An Experiment on a Bird in the Air Pump
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