The Linguistic Survey of India, often referred to as the LSI, is a comprehensive survey of the languages of British India, describing 364 languages and dialects. The Survey was first proposed by George A. Grierson, a member of the Indian Civil Service and a linguist who attended the Seventh International Oriental Congress held at Vienna in September 1886. He made a proposal of the linguistic survey and it was initially turned down by the Government of India. After persisting and demonstrating that it could be done at low cost using the existing network of government officials at a reasonable cost, it was approved in 1891. It was however formally begun only in 1894 and the survey continued for thirty years with the last of the results being published in 1928.