Documented deaf education began with welfare services, mission schools and orphanages from the 1830s, and "initially worked with locally-devised gestural or signed communication, sometimes with simultaneous speech." Later in the 19th century, residential deaf schools were established, and they tended (increasingly) to adopt an oralist approach over the use of sign language in the classroom. These schools included The Bombay Institution for Deaf-Mutes, which was founded by Bishop Leo Meurin in the 1880s, and schools in Madras and Calcutta which opened in the 1890s. Other residential schools soon followed, such as the "School for Deaf and Dumb Boys" at Mysore, founded in 1902, a school in Dehiwala in what is now Sri Lanka, founded in 1913, and "The Ida Rieu School for blind, deaf, dumb and other defective children", founded in 1923 in Karachi, in what is now Pakistan.