On the electricity of the voltaic pile : its source, quantity, intensity, and general characters
A Royal Society paper published in London in 1834 by Michael Faraday, written for natural philosophers and engineers, setting out his experimental study of electricity from the voltaic pile. The first picture shows engraved plates of voltaic cells, wire circuits and a ring apparatus drawn in fine black line on cream paper, a model for technical diagrams with labelled parts. The second is a woodcut-style figure of a man bearing a celestial sphere with ringed armillary lines on a yellow ground, useful for a strong central image with bold line contrast.
