The surprising ways that Victorians flirtedA lesser-known art form allowed British aristocracy to circumvent rules of propriety, with in-jokes and suggestive messages hidden inside seemingly innocent images, writes Holly Williams. Look up the term "collage", and the Tate's website will inform you that this cut-and-paste method for making new work was "first used as an artists' technique in the early 20th Century." Generally, Picasso and Br
