The quacks [graphic].[17 March 1783]engTwo renowned quacks demonstrate the superiority of each other's experiments and inventions. On the left, Graham, a quack, fashionable doctor and visionary, stands on the glass insulators used in his experiments with electricity and placed on top of a podium in the form of an E.O.(gaming) table, a reference to the illegal gambling he patronized at his residence. He stradles a long tube signed, "Prime conductor / Gentle restorer / Largest in the world." Behind his table stand two gigantic porters employed at his establishment, named here "Gog" and "Magog." The placard around Gog's neck, "The Temple of Health & of Hymen," is an allusion to Graham's 'celestial bed' for cure of sterility. His opponent on the right side of the image, quack, conjurer and showman Katerfelto, crouches next to a cylindrical conductor signed, "Positively Charg'd." The trident inserted in the back end of the conductor touches a grindstone turned by the devil. Electric sparks shoot from its front end and from Katerfelto's right thumb and index finger. Some sparks drip on a toy cannon in front of him firing at Graham. His podium is made of flimsy planks placed atop the container signed, "Reservoir for Dead Insects destroyd by Dr. Katterf[elto]."Title from item.Sheet trimmed trimmed to plate mark.