Alfred Hitchcock wrote in 1982: "The Hitchcock touch had four hands, and two were Alma's." Hitchcock began work on his tenth film, "Blackmail" (1929), when its production company, British International Pictures (BIP), converted its Elstree studios to sound. The film was the first British ""; it followed the first American sound feature film, "The Jazz Singer" (1927). "Blackmail" began the Hitchcock tradition of using famous landmarks as a backdrop for suspense sequences, with the climax taking place on the dome of the British Museum. It also features one of his longest cameo appearances, which shows him being bothered by a small boy
Charles Henry Hitchcock He used the tetrahedral hypothesis which had been first published in 1875 by William Lowthian Green to explain the formation of the Earth's land masses. His distant cousin was Harvey Rexford Hitchcock (1800–1855), who was an early missionary to Hawaii. This led to a publication of a book the volcanoes of Hawaii. Hitchcock was a founder of the Geological Society of America, and in 1883 vice-president of the American Association for the Advancement of Science. He left a collection of botanical specimens to the University of North Carolina Herbarium. Charles Henry Hitchcock Charles Henry Hitchcock (August 23, 1836 – November