… society. 4 . Gentleman’s Magazine 15 (1745), pp. 193-7, quoted in Simon Schaffer, ‘Natural Philosophy and Public Spectacle in the Eighteenth Century,’ History of Science 21 (1983), pp. 1-43, p. 6. By the 1740s, scientific lecturing … and electricity. Scientific experiments took their place in a metropolis that offered an unprecedented range of visual spectacles. A visitor to the city in 1807 took in demonstrations of a steam engine, a purported perpetual motion machine, … City, 1800-1840 (New Haven: Yale University Press, 1992), p. 129–42. Schaffer, Simon, ‘Natural Philosophy and Public Spectacle in the Eighteenth Century’, History of Science (vol. 21, 1983), p. 1–43. Shapin, Steven, and Simon Schaffer, …