Scope and Contents This document is of significant interest as a record of the invention of what became one of the most popular forms of public entertainment in the first half of the 19th century.It is a Warrant signed by George III commanding the preparation of letters patent granting to Robert Barker the sole use for fourteen years of his invention of "an entire new contrivance or apparatus which he calls la nature a coup d'oeil for the purpose of displaying views of nature at large by oil...