Wonders! Wonders! Wonders! was the catchphrase of the Prussian conjurer, and scientific performer and lecturer Gustavus Katterfelto (or Katerfelto) (c1743-1799). Arriving in England in September 1776, Katterfelto began to travel around the country from 1776 to 1799 performing and lecturing on a variety of scientific topics including magnetism, electricity, chemistry and engineering, themes he called his ‘Natural experimental philosophy’. His fame grew during the flu epidemic of 1782, where he proclaimed that his solar microscope would present to the captivated crowds the microbes that were responsible for the disease. This earned him recognition but also accusations of quackery, (the 18th and 19th century term for a medical charlatan). Influenced by the solar microscope the illustration is an ofgraveconcern steampunk original.