sentences:  Brown became Slade Professor of Fine Art at University College, London in 1892, and Tonks started to teach at the Slade School of Fine Art.Tonks became "the most renowned and formidable teacher of his generation".Pupils of Tonks at the Slade included Winifred Knights, David Bomberg, William Lionel Clause, Mukul Dey, Ian Fairweather, Mark Gertler, Harold Gilman, Spencer Gore, Katie Edith Gliddon, Edna Clarke Hall, Augustus John, Gwen John, Percy Wyndham Lewis, Hyam Myer, William Orpen, Isaac Rosenberg, Stanley Spencer, and Rex Whistler.